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Mind-Altering Cat Parasite Linked To a Whole Lot of Neurological Disorders (sciencealert.com)

schwit1 shares a report from ScienceAlert: The brain-dwelling parasite Toxoplasma gondii is estimated to be hosted by at least 2 billion people around the world, and new evidence suggests the lodger could be more dangerous than we think. While the protozoan invader poses the greatest risk to developing fetuses infected in the womb, new research suggests the parasite could alter and amplify a range of neurological disorders, including epilepsy, Alzheimer's, and Parkinson's, and also cancer. "This study is a paradigm shifter," says one of the team, neuroscientist Dennis Steindler from Tufts University. "We now have to insert infectious disease into the equation of neurodegenerative diseases, epilepsy, and neural cancers." The findings are part of an emerging field of research looking into how T. gondii, which is usually transmitted to humans via contact with cat faeces (or by eating uncooked meat), produces proteins that alter and manipulate the brain chemistry of their infected hosts.

95 of 209 comments (clear)

  1. Cats by Anonymous Coward · · Score: 4, Funny

    Thus explaining "crazy cat lady" syndrome.

    1. Re:Cats by Applehu+Akbar · · Score: 1

      Thus explaining "crazy cat lady" syndrome.

      All this time we thought that having an undatable personality caused women to collect cats. Apparently we had cause and effect switched.

    2. Re:Cats by Anonymous Coward · · Score: 5, Funny

      Is that your opinion, or the parasite in your brain?

    3. Re:Cats by Sperbels · · Score: 1

      How do you know it's not just that the women are avoiding people and just happen to have cats to fill a need to nurture something. Social Anxiety Disorder is more prevalent among women.

    4. Re:Cats by ShanghaiBill · · Score: 3, Interesting

      Apparently we had cause and effect switched.

      Perhaps it is not as simple as "cause and effect". It could be a circular effect. About 1 out of every 3 people world-wide is afflicted with toxoplasmosis, but the rate is even higher among cat owners. So it is likely that a majority of these cat owners are infected. Toxoplasmosis changes the behavior of rodents around cats, and makes them less fearful. So it could also affect human feelings for cats. So someone gets a cat, gets infected with toxoplasmosis from that cat, and then gets an urge to get more cats.

    5. Re:Cats by bill_mcgonigle · · Score: 1

      T. gondii attacks the analytical reasoning centers first.

      --
      My God, it's Full of Source!
      OUTSIDE_IP=$(dig +short my.ip @outsideip.net)
    6. Re:Cats by Gavagai80 · · Score: 1

      In general, social anxiety manifests before adulthood -- rarely in old age as cat lady syndrome does.

      --
      This space intentionally left blank
    7. Re:Cats by ShanghaiBill · · Score: 3, Insightful

      I've discovered that I vastly prefer the company of cats to most of humanity.

      Have you been tested for toxoplasmosis?

    8. Re:Cats by Anonymous Coward · · Score: 1, Funny

      Well, you know what they say. Dogs have owners, cats have servants.

    9. Re:Cats by HiThere · · Score: 1

      I particular, with mice it has been shown that a toxoplasmosis infection causes them to be attracted to the odor of cat urine. Also, IIRC, to be more aggressive. I don't think it causes them to be generally attracted to cats, but the combination of greater attraction to the odor of cat urine and more aggressive tends to put them in harms way. If the cat eats the mouse, then the toxoplasmosis has a chance to reproduce successfully. (IIRC, it can only become sexually mature within a feline gut.)

      Since people are rarely eaten by lions or leopards anymore the thing has no real basis for adapting to humans (unless it evolves to get from humans to cat food). But people are basically similar to mice and other small mammals, so the existing controls are likely to work. One could see if owning cats is correlated with incidents of road-rage for a plausible test, but most tests would be unethical.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
    10. Re:Cats by Hylandr · · Score: 1

      I don't know about you, but I have an irrational urge to walk up to big kitties and give them scritches. My brain steps in and say 'No they are big, and will eat you'. But, I still want to give the scritches.

      --
      ~ People that think they are better than anyone else for any reason are the cause of all the strife in the world.
    11. Re:Cats by Hognoxious · · Score: 1

      If "we" is the H1-B clowns who maintain the site, then no. It's done funny things with urls since I joined.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    12. Re:Cats by ShanghaiBill · · Score: 1

      Since people are rarely eaten by lions or leopards anymore the thing has no real basis for adapting to humans

      It could be kin selection. A cat is infected with toxoplasmosis. Through it's feces, the human owner is infected. The owner gets an urge to get more cats. Then those cats get infected from rodents infected by the original cat. So the adaption to induce humans to "get more cats" results in the DNA that caused that adaption to be spread through the protozoa's gene pool.

    13. Re:Cats by minogully · · Score: 1

      This could also explain why cat videos are so popular

    14. Re:Cats by KingBenny · · Score: 1

      while actually they have the urge to enable more parasites :D like that tv series with the politicians infected with alien mindworms ... im missing a few bits here between "could" and "maybe" and ... infected by eating euh touching cat faeces (??!? my cat buries that) or eating uncooked meat in small print
      this is clearly a plot by dog-people and control freaks cos the cat won't do what they say when they say roll over ... id google "famous people and their cats", be assured, raw meat and mcdonalds are a bit worse, television causes more disorders and inbreeding, mwell ... clear signs of that

      --
      Free speech was meant to be free for all... how can anyone grow up in a nanny state ?
  2. Possibly linked. Maybe. by Anonymous Coward · · Score: 5, Insightful

    "To be clear, the researchers aren't saying the brain parasite is definitively what's behind people developing these debilitating illnesses, but it's possible that T. gondii's protein-based meddling in the brain environment could possibly influence or enable pre-existing susceptibilities in some people to these kinds of diseases."

    So, only possibly linked. But maybe not. Bad title.

  3. FUD indeed! by Ol+Olsoc · · Score: 2, Insightful
    Toxoplamosis gondii infects virtually all warm blooded Animals. So all you Slashdotters eating cheetos and living in your mom's basement should be safe.

    If this is remotely true, we are well and truly fucked, because it isn't just cats, it's damn near everything.

    On the serious side, cook yer gadamned food properly and wash your hands after doing shit like taking a crap, or petting pigs, and then all you'll have to worry about is everything else.

    --
    The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    1. Re:FUD indeed! by Anonymous Coward · · Score: 1

      That's because dogs are filthy and smell bad.

    2. Re:FUD indeed! by Anonymous Coward · · Score: 1

      Dogs shit right in the middle of the floor, sidewalk, where ever they please and just leave it there for someone to step in. Cats politely dig a hole out of the way, do their business and cover it up.

    3. Re:FUD indeed! by Mal-2 · · Score: 1

      It's not politeness, it's self-interest. Carnivore shit tends to serve as a warning to potential prey, so cats hide it. Simple as that.

      --
      How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
    4. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      We don't have most other animals pissing and shitting in the same house as humans though. Even dogs aren't usually treated as intimately as most cats.

      You wash your hands. You cook your food. This isn't rocket surgery. And if you have your cat or dog in the house you are even less likely to have a problem.

      There are, just as an aside, a fair number of people who use pee-pads for their dogs, and even after they go outside, that's when they can pick the bad stuff up. Some dogs are actually coprophagic, which is a hellava direct route for toxoplamasmosis. Eat an unburied cat turd outside, come in and lick your face? Yummy.

      This is so simply avoidable by simple basic hygiene.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    5. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      On the serious side, cook yer gadamned food properly and wash your hands after doing shit like taking a crap, or petting pigs, and then all you'll have to worry about is everything else.

      Your insistence upon these elitist behaviors is the reason your side lost the 2016 election.

      I laughed, but I wasn't certain that you weren't being serious. Either way, you are correct.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    6. Re: FUD indeed! by that+this+is+not+und · · Score: 1

      Our dog is a sporting breed, and has had generations of intelligence bred into her bloodline.

    7. Re:FUD indeed! by that+this+is+not+und · · Score: 1

      On the serious side, cook yer gadamned food properly and wash your hands after doing shit like taking a crap, or petting pigs, and then all you'll have to worry about is everything else.

      Your insistence upon these elitist behaviors is the reason your side lost the 2016 election.

      It's just weird, because I would think you would be the first to agree that we all lost in the 2016 election.

    8. Re:FUD indeed! by MrL0G1C · · Score: 2

      Or they just shit all over the neighbour's lawn. Until that neighbour installs an anti-cat system that squirts a jet of water at them, that works better than lion pee and a myriad of other ant-cat things that don't work.

      --
      Waterfox - a Firefox fork with legacy extension support, security updates and better privacy by default.
    9. Re:FUD indeed! by Zontar+The+Mindless · · Score: 1

      And dumbots like you need sarcasm detectors.

      TL;DR: Whooooosh.

      --
      Il n'y a pas de Planet B.
    10. Re: FUD indeed! by bestweasel · · Score: 1

      If it's that simple, why is the infection so widespread?

      serological studies estimate that 30â"50% of the global population has been exposed to and may be chronically infected with T. gondii, although infection rates differ significantly from country to country. For example, previous estimates have shown the highest prevalence of persons infected to be in France, at 84%.

      Inb4 jokes about the French.

      Cats, unlike dogs or pigs, lick themselves all over, including their little cat bottoms (Want to know the secret to great looking hair? Use new Spittlene, with fresh organic cat saliva). Contamination nowadays is more likely to be: stroke cat, change channel, send text message, wash hands, eat, change volume, check email, eat, so I wondered if stroking cats was a vector, but the same Wikipedia article says, "numerous studies have shown living in a household with a cat is not a significant risk factor for T. gondii infection".

      There should be a study into otherwise normal people who come into contact with cats and are converted.
      "Oh I've never liked cats but ooh look at her cute little tum-tum."

      I've lived with cats pretty much all my life and I for one welcome our fluffy overlords.
      "What's that Tiddles, you prefer the tuna?"

    11. Re: FUD indeed! by CrashNBrn · · Score: 1

      Aye. Our Canaan prefers heavy palms, deep bushes, or behind a tree as a last resort.

    12. Re:FUD indeed! by Anonymous Coward · · Score: 1

      Or they just shit all over the neighbour's lawn. Until that neighbour installs an anti-cat system that squirts a jet of water at them, that works better than lion pee and a myriad of other ant-cat things that don't work.

      Lion pee isn't supposed to make magically cats go away. It's to warn them a dangerous competitor is around. If it doesn't work for you there are likely two things you are doing wrong:
      1) Not using enough or
      2) the yard chain is too small.

      Try leaving out more water and using a longer chain so it can reach the edges of the yard. Otherwise your lion will be thirsty and unable to catch the cat.

    13. Re:FUD indeed! by Opportunist · · Score: 1

      In this time and age it can be excused. Poe's Law has long since expanded to all sorts of areas, it's no longer confined to religion.

      A mere decade ago, anyone saying anything so completely ridiculous would have immediately gotten the "Nah, nobody can be THAT stupid, he must be joking" reaction. Today, though, we have learned that people ARE actually that stupid and DO say something like that in all seriousness.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    14. Re:FUD indeed! by Hognoxious · · Score: 1

      I used to live in a house that had cats either side and over the back (from the adjoining street).

      We had all of them shitting in it. Cat Bosnia.

      --
      Confucius say, "Find worm in apple - bad. Find half a worm - worse."
    15. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      It's a parasite that makes people hoard cats.

      Or attempt to herd cats

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    16. Re: FUD indeed! by Ol+Olsoc · · Score: 1

      If it's that simple, why is the infection so widespread?

      Because most people practice really poor hygiene.

      Cats, unlike dogs or pigs, lick themselves all over, including their little cat bottoms

      Dogs also lick their buttholes. Google dog licking it's ass and you'll be treated to a real "treat". And as I noted, many eat their own or other dog's shit. I remember at a pet store years ago, there were two cute little terrier pups in a cage. People were oooh'ing, and aww'ing the little guys, when one gets ready to take a dump, and the other one scaps that tootsie roll up as it's coming out - the turd never hit the floor. Oooh turned to Ewwww! quickly.

      Anyhow take it up with these guys http://www.petmd.com/dog/condi...

      Toxoplasma gondii is outrageously common, can be avoided by simple hygiene, and if you have an indoor cat, you are seriously unlikely to catch a dose. And this bit of FUD is really ancient as well. When my wife and I had a child 34 years ago, we were told about the dangers of Toxoplasmosis. The advice was to not have her clean out the litter is we had a cat that goes outside, and for hand washing hygiene.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    17. Re:FUD indeed! by epine · · Score: 1

      This is so simply avoidable by simple basic hygiene.

      You have a level of trust in "basic hygiene" that I simply don't share, and I can't even imagine how to conduct a study that would prove your thesis directly.

      I bet even the most clinically extreme neat freak experiences an unwitting basic hygiene lapse at least once per week.

    18. Re: FUD indeed! by rholtzjr · · Score: 1

      Okay, but will your dog raid a cat's litter box to see if there is a mid-day snack? (Hint: most do). So for those that have both cats and dogs as pets, this is usually the reason why there should be no concern that your feline friend is constipated.

    19. Re:FUD indeed! by butchersong · · Score: 1

      Cats paw their way through a litter box then strut around on your counter tops and occasionally throw up nasty hair ball / half digested food concoctions. I'll take a dog.

    20. Re:FUD indeed! by HiThere · · Score: 1

      Actually, the reason cat bites are more dangerous is that they are more puncture wounds and less open wounds. The claws are something else, though I wouldn't guess why cat scratch fever happens. Dog scratch fever is unknown because dog scratches rarely break the skin, and when they do it's an open wound.

      Bacteria and live in very small spaces, so ordinary cleanliness doesn't suffice for protection. For that we depend on our unbroken skin...which is dead on the outside, and continually sloughed off. And deep punctures are much more dangerous that surface wounds, as the contamination is harder to eliminate.

      FWIW, under "natural" conditions people are among the dirtiest of animals. This is related to living in dense groups and not being evolved to do that very long. Domestic cats and dogs (and pigs and chickens and cattle and...) are raised in a much more congested environment than their wild ancestors would tolerate. Most of them would prefer to be cleaner, but food and fencing tend to cause them to tolerate less desirable conditions.

      All that said, I have read that toxoplasmosis can only become sexually mature within a feline. (I believe it was within a feline gut.) And the normal way the prey becomes infected with it is by exposure to cat feces. So it doesn't evolve to specifically handle animals that aren't eaten by felines. But over historic periods this includes most families of mammals. And it's not picky as to who it infects for the "prey" stage of its life cycle (though I haven't heard that it infects anything except mammals).

      Therefore we can plausibly assume that it causes us to behave in ways that would make our distant ancestors more likely to become a cat's dinner. Proving this assumption correct could, however, be difficult.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
    21. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      This is so simply avoidable by simple basic hygiene.

      You have a level of trust in "basic hygiene" that I simply don't share, and I can't even imagine how to conduct a study that would prove your thesis directly.

      I bet even the most clinically extreme neat freak experiences an unwitting basic hygiene lapse at least once per week.

      I'm not certain how to reply. Diseases that can spread by contact with people or other animals that require you to transfer the pathogens to your mouth just need a break in the transmission pathway.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    22. Re:FUD indeed! by BronsCon · · Score: 1

      Diseases that can spread by contact with people or other animals that require you to transfer the pathogens to your mouth just need a break in the transmission pathway.

      Unless you also have a break in your skin, in which case they'll just take that route. Frequent washing (basic hygiene) dries the skin, creating many breaks, unless you also frequently moisturize (above and beyond basic hygiene); therefore, basic hygiene is not enough and, in fact, too much of it can be detrimental.

      --
      APK quotes people (including myself) without context and should not be trusted. Just thought you should know.
    23. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      Diseases that can spread by contact with people or other animals that require you to transfer the pathogens to your mouth just need a break in the transmission pathway.

      Unless you also have a break in your skin, in which case they'll just take that route. Frequent washing (basic hygiene) dries the skin, creating many breaks, unless you also frequently moisturize (above and beyond basic hygiene); therefore, basic hygiene is not enough and, in fact, too much of it can be detrimental.

      Well, as a guy on Slashdot, you can know what you know. Meanwhile, I'll take the CDC's reccommendations. https://www.cdc.gov/parasites/... I have done what they suggest for years. We cook our meat properly, store it properly, Feed our indoor cats as recommended, I wear nitrile gloves as needed, and despite having cats for the past 40 + years have not contracted Toxoplasmosis.

      Is your obstinate stance on this issue possibly related to not liking cats?

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    24. Re:FUD indeed! by Mal-2 · · Score: 1

      Just because it's a good idea, that doesn't mean every carnivore branch has it baked into their genes.

      --
      How is the Riemann zeta function like Trump rallies? Both have an endless number of trivial zeros.
    25. Re:FUD indeed! by BronsCon · · Score: 1

      There is so damned much wrong with your comment...

      To start, you assumed my gender. Not that I care, I do it all the time, too; but the people who do care are annoying and will tear you a new one over it, so... yeah.

      Second, the CDC's recommendations on that page have nothing whatsoever to do with basic hygiene, which is what was being discussed here. Also, I'm not the poster who questioned your trust in basic hygiene (just in case you don't look at usernames) and haven't really been obstinate here. I d now, after reading what you just posted, question your understanding of basic hygiene, as your reference mentions a whole slew of procedures, but only touches on anything hygiene-related with regard to post-gardening activity.

      Finally, as a guy on Slashdot, you can't know that I actually have two cats. Well, you can, because I just told you. Don't just take my word for it, though; shoot me an email and we'll connect on Skype or Slack so you can ask them if they think I like them.

      --
      APK quotes people (including myself) without context and should not be trusted. Just thought you should know.
    26. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      There is so damned much wrong with your comment... To start, you assumed my gender. Not that I care, I do it all the time, too; but the people who do care are annoying and will tear you a new one over it, so... yeah.

      "Guy" as a admission not of gender, but that I am engaging in an act of communicating with a member of homo sapiens sapiens, is commonly accepted by almost all people I know as a fine way of referring to other people.

      As for annoying those folks you mention, that's a good thing in my book. I see male and female sex or gender, and whatever a person wants to do with consenting other adults is not concerning to me. But these people who toss gender around like there is an infinite number of genders, but for some reason become enraged if you don't refer to them by the exact one of their choice, are holding both that getting and referring to their chosen gender correctness is absolutely critical, and irrelevant at the same time.

      They start out angry, and if I can trigger rage in their hate filled little noggins, I am pleased. I gather the same joy in pissing off Trump voters, and any and all of left and right wing brainless types.

      But I digress.

      Second, the CDC's recommendations on that page have nothing whatsoever to do with basic hygiene, which is what was being discussed here. Also, I'm not the poster who questioned your trust in basic hygiene (just in case you don't look at usernames) and haven't really been obstinate here. I d now, after reading what you just posted, question your understanding of basic hygiene, as your reference mentions a whole slew of procedures, but only touches on anything hygiene-related with regard to post-gardening activity.

      What on earth are you talking about guy? If I might take the liberty of going through what the CDC is promoting in their efforts to keep people from toxoplasmosis, the first thing they refer to is food preparation. Food preparation hygiene is really basic. Cook to a proper temperature - we use 160 s a guideline in my house. Wash veggies and fruits thoroughly. This not only gets rid of pathogens, but insecticides as well. Wash everything the food touches before and afterwards, which includes countertops, cutting boards knives an utensils, and for crissakes, your hands! Also in my place, we wear gloves if there are any cuts or other injuries to the hands.

      And the same goes for doing stuff outside in the garden. Nitrile gloves are the order of the day. I wear them for gardening, and while not related to this discussion, I wear them while working on the car. They keep my hands nice and clean.

      Regardless, this is basic in my book, perhaps it is considered obsessive compulsive in others. But then so are the CDC's recommendations I guess. I'm not in the least afraid to get dirty, but I do know the pathways of infection.

      Finally, as a guy on Slashdot, you can't know that I actually have two cats. Well, you can, because I just told you. Don't just take my word for it, though; shoot me an email and we'll connect on Skype or Slack so you can ask them if they think I like them.

      I believe you, but I wanted to ask the question because I wanted to clear up which angle you were taking. Now it looks like your assessment of my hygiene tactics.

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
    27. Re:FUD indeed! by BronsCon · · Score: 1

      When most people mention hygiene, they're referring to personal hygiene. You know, hand washing, showering, not scratching your ass then touching your face. That's basic hygiene as most people understand it and, I beieve, what epine was referring to; it's certainly what I was talking about.

      If you wish to go by the academic definition, rather than the lay definition... Well, first, let me just say I am quite fine with that and, in fact, wish I saw more of that here. I have no argument if that is the difinition you were using, but I would advise you to remember where you are and that people here often only think they're smart enough to follow an intelligent conversation.

      Due to the above, I often dumb myself down a bit when reading here; when the average person and an educated individual might define a word differently, I always default to the lay definition and this is the first time it may have caught up to me in over a decade on this site. This is why I suggest you do the same. Assume people here have, at best, an American high school education until they give you reason to believe otherwise. If nothing else, it will preserve your sanity.

      We good?

      --
      APK quotes people (including myself) without context and should not be trusted. Just thought you should know.
    28. Re:FUD indeed! by Ol+Olsoc · · Score: 1

      We good?

      Of course!

      --
      The shepherds did so well protecting the flock that the sheep no longer believed that wolves existed.
  4. What I find interesting is by rsilvergun · · Score: 4, Interesting

    more and more we're finding mental disorders and weaknesses aren't poor decision making or weak moral fiber but a sign something is broken. For millennia we've blamed the mentally ill for their faults unless they were so stark raving mad we couldn't do anything but laugh. As a lot of smaller behavioral problems are traced to physiology I wonder if our society and our political narratives will adapt.

    --
    Hi! I make Firefox Plug-ins. Check 'em out @ https://addons.mozilla.org/en-US/firefox/addon/youtube-mp3-podcaster/
    1. Re:What I find interesting is by Black+Parrot · · Score: 1

      more and more we're finding mental disorders and weaknesses aren't poor decision making or weak moral fiber but a sign something is broken. For millennia we've blamed the mentally ill for their faults unless they were so stark raving mad we couldn't do anything but laugh. As a lot of smaller behavioral problems are traced to physiology I wonder if our society and our political narratives will adapt.

      Supposedly a number of ethicists and jurists are worried that "my brain made me do it" will become a standard courtroom defense.

      If you want to get out ahead of the crowd, try "my cat's parasites made my brain make me do it".

      --
      Sheesh, evil *and* a jerk. -- Jade
    2. Re:What I find interesting is by The+Evil+Atheist · · Score: 1

      Funnily enough, that's only a concern back when superstitions were widely held beliefs. "The Devil made me do it". The most newsworthy of recent incidents was former South African cricket captain Hanse Cronje.

      With naturalistic explanations, at least there is a chance in hell to actually test it instead of people getting away by blaming being possessed.

      --
      Those who do not learn from commit history are doomed to regress it.
    3. Re:What I find interesting is by Anonymous Coward · · Score: 1

      Owning a cat is clearly both poor decision making and a sign of weak moral fiber.

      Buddy, I thought I told you that you're not allowed on the computer anymore.

      Bad dog.

    4. Re: What I find interesting is by bestweasel · · Score: 1

      As an atheist I'm sure you appreciate that the devil can be seen just as an external manifestation of a person's desire to do what they feel or have been taught is wrong. The supernatural aspect is optional though convenient scapegoat.

      We're finding more and more that what were thought to be expressions of free will, such as disliking the taste of coriander, or otherwise random, like being able to roll ones tongue, are instead genetically determined. Subtle combinations of genes will likely determine more major personality traits as they do with physical variations, though in a more probabilistic way than the binary examples above, The diagnostic tests will follow. What's the likelihood that the accused is a psychopath or this embryo will become schizophrenic?

    5. Re: What I find interesting is by Zontar+The+Mindless · · Score: 1

      We're finding more and more that what were thought to be expressions of free will, such as disliking the taste of coriander, or otherwise random, like being able to roll ones tongue, are instead genetically determined.

      WTF? Have you been sleeping under a rock for the last 100+ years?

      Neither of those, to the best of my knowledge, has ever been considered an act of "free will".

      I certainly don't choose to find licorice disgusting--in fact, I've tried many times to get myself to like it, but, all efforts to the contrary notwithstanding, it still tastes like, well, cat shit to me.

      And we've known about the tongue rolling thing being passed on for decades--it was used specifically as an example of an inheritable trait in a text I read as a kid in the 1970s.

      --
      Il n'y a pas de Planet B.
    6. Re:What I find interesting is by misexistentialist · · Score: 1

      I think in the past people were more likely to ascribe insanity to physical forces, "psychoanalysis" is a modern fraud

    7. Re:What I find interesting is by drinkypoo · · Score: 1

      Supposedly a number of ethicists and jurists are worried that "my brain made me do it" will become a standard courtroom defense.

      You have to act like there is free will or this system doesn't work. However, this system sucks. There may not be any such thing as free will. In which case, you can reasonably say that what we ought to do is treat people like they're sick, not evil. However, you also can't reasonably be overly upset at people unwilling to do that. But don't beat yourself up if you are, because that's not your fault either :)

      --
      "You're right," Fisheye says. "I should have set it on 'whip' or 'chop.'"
    8. Re: What I find interesting is by dunkelfalke · · Score: 1

      How exactly have you found out what cat shit tastes like?

      --
      "It's such a fine line between stupid and clever" -- David St. Hubbins, Spinal Tap
    9. Re:What I find interesting is by HiThere · · Score: 1

      Explaining the cause of a fault is not denying the existence of the fault.

      The question is "What should be done about it?". I'll agree that "beating yourself up" is rarely a useful approach, but that doesn't mean you should just accept it. There are generally multiple approaches to controlling any specific behavior, and multiple ways to deal with an infirmity or other fault. Find one that works. Sometimes you need assistance in finding one that works.

      The real problem is when there's a defect in goals...but this is often due to defective training rather than an inherent defect.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
  5. Does Schrodinger's cat have this parasite? by fustakrakich · · Score: 2

    Well, yes and no...

    --
    “He’s not deformed, he’s just drunk!”
    1. Re:Does Schrodinger's cat have this parasite? by Opportunist · · Score: 1

      That Schrödinger is one odd guy. Has a box with a cat in it, I opened it and it was dead, and now he accuses me of killing the cat because I opened the box.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  6. Cats by somenickname · · Score: 3, Informative

    Still totally worth it.

  7. Shit I thought Psilocybin was in my blood by future+assassin · · Score: 1

    must be my 6 cats that make me trip out all the time.

    --
    by TheSpoom (715771) Uncaring Linux user here. I have nothing to add to this but please continue. *munches popcorn*
  8. Cat Parasites by tquasar · · Score: 1
  9. Makes Mice Crazy by Chysn · · Score: 4, Informative

    Usually mice are afraid of the scent of cats, and steer clear.

    But toxoplasma gondii-infected mice lose their fear of cats, and are actually attracted to the scent. They'll seek it out and hang out close to cats, where they'e more likely to be eaten, thus transferring the toxoplasma to the cat, where it can continue its life cycle.

    That has nothing to do with this article, but I think it's really cool.

    --
    --I'm so big, my sig has its own sig.
    -- See?
    1. Re:Makes Mice Crazy by postglock · · Score: 1

      This actually has everything to do with this article! One hypothesis is that toxo-infected humans have increased risk-taking behaviour. There's an association with toxoplasmosis and accidents/suicides, for example. This risk-taking would supposedly make humans more susceptible to being predated on by big cats, thus again allowing toxo to continue its life cycle. Presumably if the parasite can mess with your brain, it's also capable of doing other things that might make you more likely to be eaten by Smilodon.

    2. Re:Makes Mice Crazy by Weirsbaski · · Score: 1

      Usually mice are afraid of the scent of cats, and steer clear.

      But toxoplasma gondii-infected mice lose their fear of cats, and are actually attracted to the scent. They'll seek it out and hang out close to cats, where they'e more likely to be eaten, thus transferring the toxoplasma to the cat, where it can continue its life cycle.

      That has nothing to do with this article, but I think it's really cool.

      It doesn't sound as cool for the mice...

      --

      I am not a sig.
    3. Re:Makes Mice Crazy by DeQueue · · Score: 2

      For more details, see "Fatal attraction in rats infected with Toxoplasma gondii."

      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1690701/pdf/11007336.pdf

      Although not directly a part of the above study, the paper includes this
      interesting tidbit:

      "Even naive laboratory rats that have not been in contact
      with cats for several hundred generations still show
      strong aversive reactions when confronted with cat odor."

    4. Re:Makes Mice Crazy by Opportunist · · Score: 1

      If you want something even more creepy, try parasites that control their hosts.

      Li'l warning for those like me that aren't too fond of the creepy-crawly: It gets VERY creepy-crawly! Because as one can assume, most affected organisms are relatively primitive insects.

      --
      We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
    5. Re:Makes Mice Crazy by NicknameUnavailable · · Score: 1

      Usually mice are afraid of the scent of cats, and steer clear.

      But toxoplasma gondii-infected mice lose their fear of cats, and are actually attracted to the scent. They'll seek it out and hang out close to cats, where they'e more likely to be eaten, thus transferring the toxoplasma to the cat, where it can continue its life cycle.

      That has nothing to do with this article, but I think it's really cool.

      Actually, that's pretty close to the topic of the article, it's just that the article is too politically-correct to say what else it causes: homosexuality. T. Gondii rewires the brains of mice to be sexually attracted to male urine, meanwhile most gays like cats. That's hardly a coincidence.

  10. Toxo is intriguing by American+AC+in+Paris · · Score: 2

    This is *really* cool science, but "paradigm shifting" may be a touch over the top--this isn't the first paper or study to come to the conclusion that Toxo plays a role in neurological disorders, and there are labs around the globe that have been working on this topic for years. (Full disclosure: my wife was a postdoc in a lab that studied Toxo and its role in schizophrenia and bipolar disorder. I'm no expert myself and will happily defer to real researchers on this, but I picked up a lot over the years from her.)

    Fun Toxo tidbit: this is dredged from the depths of my memory, but as I recall that they've found a correlation between Toxo rates and automobile accident rates across several countries in Europe. The underlying theory is that Toxo causes very slight impairments in both risk assessment and motor control in its victims--not enough to really notice in an individual, but enough to track across a population...

    --

    Obliteracy: Words with explosions

    1. Re:Toxo is intriguing by thomst · · Score: 1

      American AC in Paris noted:

      This is *really* cool science, but "paradigm shifting" may be a touch over the top--this isn't the first paper or study to come to the conclusion that Toxo plays a role in neurological disorders, and there are labs around the globe that have been working on this topic for years.

      Yep:

      and those are just the top three scholarly articles for a google search for "toxplasmosis rat behavior". The parent page for each of those articles links to other, related studies, as well - but the Bermoy, Webster, and Macdonald study from 2000 appears to be the first. So, no, not exactly ground-breaking, and definitely not a paradigm changer, either.

      Anybody remember Stanley Prusiner (hint: he won pretty much every award there is to win in medicine - including the Nobel - for his work establishing the existence, transmissibility, and neurodegenerative impact of prions)? Remember how respected authorities in medicine laughed at him ... ?

      --
      Check out my novel.
    2. Re:Toxo is intriguing by wiretrip · · Score: 1

      Oh yes, (see my comment about the French). I thought I remembered reading that increased risk taking behaviour was linked to this, particularly in France, where people like raw meat.

  11. Re:As if I needed a reason to hate cats more by ChrisMaple · · Score: 1

    Having been bitten and scratched by a species dedicated to annihilating songbirds has nothing to do with it.

    --
    Contribute to civilization: ari.aynrand.org/donate
  12. Re:ignorant shit by that+this+is+not+und · · Score: 1

    She had a platform. I think she stumbled off of it on several occasions.

  13. Re:As if I needed a reason to hate cats more by thesupraman · · Score: 1

    Or just possibly they dont like the idea of breeding more of an animal that existing primarily to torture and kill the local wildlife in the area, mostly the local small bird population?

    No, you are right, it must be insecurity.

    Do you burn up ants with a magnifying glass in summer for fun? Pull the legs off insects? Its significantly less cruel to wildlife than keeping a cat.

  14. Ummm.. by thesupraman · · Score: 1

    Quite impressive really.
    Being diagnosed with TP at least 2 years before the first confirmed cases showing TP was a human pathogen, and 11 years before a test was developed for it.

    Luck you are so smart, Professor - you should publish!

  15. Re:Possibly linked. Maybe. by mysticgoat · · Score: 4, Interesting

    I did some reading up on toxoplasmosis about a decade ago, when a friend's twenty-something son got mixed up with a crazy woman in her forties who was a classic "crazy cat lady" (except she was not old and she looked and acted like an oversexed teenager). Not much had been published in the medical journals at that time, and I doubt that much has been added since then.

    There had been several studies on toxoplasmosis in rats. Some of the findings were that infected rats became greater risk-takers who would explore potentially hostile environments sooner, and more often, than healthy rats. They were attracted to cat urine, where healthy rats avoid that odor. They were more sexually active than uninfected rats.

    There was conjecture at that time that "crazy cat ladies" did not experience the odor of cat piss the same way other people did, which is why they tolerated, and sometimes seem to prefer, to live in rooms that reeked of cat piss. There was conjecture that these women were promiscuous and as a group tended to have intense sexual relationships that did not last long. It seemed like as a group they had more automotive crashes than the norm, and that they were more frequently fired for abusing sick leave and other job perks, or fudging the paperwork. These are indicators of a greater degree of risk-taking.

    Conclusions: In the specific case, the boy got dumped and the girl moved out of state, so that was resolved. My personal conclusion is to avoid any relationship with women who live with cat stink, or own more than two cats. I will not venture any more general conclusion.

    It is a little scary that somewhere between 1 in 5 and 1 in 3 adults tests positive for exposure to T. gondii. However there is no way to determine whether any of these positives is an active carrier, or whether the parasite has gotten into their brain.

    Now if I were going to write a zombie apocalypse story, I would probably use a mutant strain of T. gondii as the agent.... But I don't write that kind of story.

  16. Re:ignorant shit by Zontar+The+Mindless · · Score: 1

    That's not a very nice thing to say about Mrs Cohn. And I don't think she got elected to anything, in any case.

    --
    Il n'y a pas de Planet B.
  17. Re:ignorant shit by deviated_prevert · · Score: 1

    Unemployment is down, GDP is up, stock market hitting highs.

    Naw, the only people slitting their own throats are the piss bottlers who thought a self-shitting side o' beef that had no platform was the answer to everything.

    And guess what, you're not getting jack shit of the GDP increase. You're getting fucked in the ass and too stupid to know it.

    In 1945 in Berlin while Der Fuhrer was safe inside his bunker and the German industrialists that profited were quickly working behind the scenes to avoid having their money in Switzerland confiscated by getting friendly again with their American counterparts, the effects of Toxoplasma gondii had lessened to a very great extent. Thus came the German term Dachkaninchen used for the equivalent of what was derided originally by Hitlers press about the British during the years they stood alone against the Nazis.

    It seems that even though the gdp of the US and Canada is up and the 1% is quickly becoming the .5% even as the numbers of homelessness and food price inflation is out of control, the facts are that there are still vast untaped food resources left in the US for the poor. As and example I give you the traveling homeless that come and go in our cities, a fair number of them travel with dogs. This is very smart because if you cannot get welfare then you have a handy piece of meat right there with you. Same with little old ladies who keep a pile of cats, when they can't afford to eat cat food as many seniors are forced to do then there is always the Dachkaninchen (roof rabbits) to fall back on if worst comes to worst. NOW THIS IS AN IGNORANT shit of a post!!!! At least according to my cats. MEOW

    --
    This message was not sent from an iPhone because Peter Sellers really was a deviated prevert without a dime for the call
  18. Re:Possibly linked. Maybe. by Opportunist · · Score: 4, Funny

    There was conjecture that these women were promiscuous and as a group tended to have intense sexual relationships that did not last long.

    Ok, sold. How do we infect the hot chicks of the planet?

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  19. Uh, oh. Has the OP been watching Fortitude!? by bleugh · · Score: 1

    Or reading a certain sci-fi series where the far future is actually controlled by intelligent, sentient bacteria that will their unwitting host species to co-operate or go to war to further their distribution in the galaxy

  20. Re:ignorant shit by Opportunist · · Score: 1

    Only when you finally get rid of the sponges currently sharing it.

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  21. Re:If it changes human behavior do you want a cure by Opportunist · · Score: 1

    When I talk about getting rid of political parasites, this wasn't exactly what I was talking about...

    --
    We used to have a Bill of Rights. Now, with the rights gone, all we have left is the bill.
  22. Re:Possibly linked. Maybe. by michelcolman · · Score: 1

    They were more sexually active than uninfected rats.

    I guess that explains why nobody has bothered to find a cure for this disease that affects billions of people. Would they want the cure anyway?

  23. TEH RULES OF TEH INTERWEBS!!! by DrYak · · Score: 1

    Ok, sold. How do we infect the hot chicks of the planet?

    So now, you finally understand how the internet can both at the same time be
    - only for porn
    - only for kitten

    You're witnessing our Machiavellian ploy unfold.

    --
    "Sufficiently advanced satire is indistinguishable from reality." - [Tips: 1DrYakQDKCQ6y52z6QbnkxHXAocMZJE61o ]
  24. Yes, that's exactly what it explains. No joke. by Qbertino · · Score: 1

    Thus explaining "crazy cat lady" syndrome.

    Yes, that's exactly what it explains. No joke.

    --
    We suffer more in our imagination than in reality. - Seneca
    1. Re:Yes, that's exactly what it explains. No joke. by HiThere · · Score: 1

      It's not a joke, but it's also not certainly true. It's a plausible hypothesis. Or it may explain parts of the effect.

      The best way to tell would be to immunize a sufficient number of "cat ladies" and see whether they reduce the number of cats they give room to compared to a randomly selected control group. Unfortunately, I haven't heard of any way to immunize against toxoplasmosis.

      --

      I think we've pushed this "anyone can grow up to be president" thing too far.
  25. Well that explains the Left. by sproketboy · · Score: 1

    ntr

  26. Re:Better still by Pinky's+Brain · · Score: 1

    It's almost incurable to begin with and pretty much the only people getting any treatment for it are AIDS victims.

  27. Re:There's a toxoplasma vaccine for animals by Pinky's+Brain · · Score: 1

    Interesting.

  28. Tee Shirt by PPH · · Score: 1

    "One Cat Short of Crazy"

    --
    Have gnu, will travel.
  29. Re:Whatever by butchersong · · Score: 1

    Somebody is really attached to their pussy cat...

  30. Re:How long history TC has? by HiThere · · Score: 1

    It doesn't work that way. You're thinking of parasites that tie their reproduction to the reproduction of the host. This is a parasite that ties its reproduction to the host being eaten by a cat. The evolutionary pressures are different.

    --

    I think we've pushed this "anyone can grow up to be president" thing too far.
  31. Re:If it changes human behavior do you want a cure by HiThere · · Score: 1

    That's not a unreasonable question, and it might even have some application to this particular case, though it would certainly be an edge effect. Toxoplasmosis does seem to encourage risky behavior (of certain types) so it could affect political leanings. But curing it wouldn't reverse political leanings because those are largely habitual. That said, it has been demonstrated, e.g., that, statistically, Republicans are more sensitive to disgust than are Democrats. So there certainly are deep connections that could over time change things. Just *how* that would change things is unclear. And it's not as if toxoplasmosis is the only bacterial mind-control agent that inhabits people. They aren't all even parasites, unless you consider your gut bacteria parasites.

    --

    I think we've pushed this "anyone can grow up to be president" thing too far.
  32. Re:Possibly linked. Maybe. by jafac · · Score: 1

    Sounds like you're describing classic symptoms of Borderline Personality Disorder; and given my (unfortunate) familiarity with several sufferers (runs in my family) - they seem to share a common trait of hypersensitive smell.

    So yes: they all seem to love cats. A lot. And prefer them to humans. (because: you get pure affection, with no complicated human emotional and relational politics). But cat pee? Not the ones I'm familiar with. They absolutely don't tolerate it, and take extra measures to stay on top of pet odors. (and all odors, really). (even odors that aren't really there).

    Now: that there IS a "classic crazy cat-lady" syndrome, I won't deny. I just don't think it's common to these Borderline Personality Disorder people (who are also commonly very fond of cats). Maybe some BPD ppl get t. gondii infections and get both? That would be unfortunate because BPD is bad enough. Those people struggle to lead normal lives as it is.

    --

    These are my friends, See how they glisten. See this one shine, how he smiles in the light.
  33. Re:Possibly linked. Maybe. by mysticgoat · · Score: 1

    I know nothing about PCOS ---I just now googled to find it is "Polycystic Ovary Syndrome". Since one of the women in my social circle comes down with every estrogen related polysyllabic disease with an abbreviation within a short time of its first appearance on the intarwebs she frequents, I will undoubtedly soon be made familiar with the litany of PCOS' signs and symptoms. If you don't know any women with this particular form of Munchhausen syndrome, I envy you.

    But does PCOS lead to the inability to hold down a job for longer than the first annual performance review, where questions of whether the woman had completed any of the assigned tasks without fudging somewhere arise? A resume of more than 12 jobs in the last decade is probably not a part of whatever PCOS is, but is common among CCLs (Crazy Cat Ladies, abbreviation introduced here to keep pace with the PMAs ---Pseudo Medical Abbreviations--- that are being floated around). Does PCOS lead to the inability to get reasonable car insurance because of an excessive number of bizarre accidents ("I was sure that I could squeeze into that space")?

    CCL from the toxo parasite is associated with these behaviors, as well as with the sexual promiscuity.

  34. Well that explains 'the French'... by wiretrip · · Score: 1

    I remember reading somewhere that the highest concentration of human hosts of the parasite was France (due to their propensity to eating raw meat). That article noted a correlation between this and 'fiery temperament' and increased risk taking behaviour.

  35. News flash.... by martinfb · · Score: 1

    It turns out that President Trump has been infected with T.gondii for decades.
    Also, so have a vast majority of citizens that voted for him.

    Thus, answering some perplexing questions...

    --


    Self-importance and self-indulgence is the root of ALL evil.