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Brain Decline Begins At Age 27

krou writes "The BBC is reporting that a new study suggests that our mental abilities start to dwindle at 27 after peaking at 22, and 27 could be seen as the 'start of old age.' The seven-year study, by Professor Timothy Salthouse of the University of Virginia, looked at 2,000 healthy people aged 18-60, and used a number of mental agility tests already used to spot signs of dementia. 'The first age at which there was any marked decline was at 27 in tests of brain speed, reasoning and visual puzzle-solving ability. Things like memory stayed intact until the age of 37, on average, while abilities based on accumulated knowledge, such as performance on tests of vocabulary or general information, increased until the age of 60.'"

22 of 381 comments (clear)

  1. You kids! by spun · · Score: 4, Funny

    Get off my... uh green thing, with the, um little plants? What's it called?

    --
    - None can love freedom heartily, but good men; the rest love not freedom, but license. -- John Milton
    1. Re:You kids! by internerdj · · Score: 4, Funny

      Who are you? What are you talking about? And have you seen my glasses?

    2. Re:You kids! by Quiet_Desperation · · Score: 4, Funny

      Get off my... uh green thing, with the, um little plants? What's it called?

      I'm guessing pot garden? :-)

    3. Re:You kids! by Ethanol-fueled · · Score: 4, Funny

      And so we come full-circle with the root-cause of the memory loss.

  2. This would have been first post by MadMidnightBomber · · Score: 5, Funny

    but I'm 31, not 22.

    --
    "It doesn't cost enough, and it makes too much sense."
  3. Peaking at 22 by Thelasko · · Score: 4, Insightful

    What a coincidence! That's when most people graduate from college!

    --
    One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
    1. Re:Peaking at 22 by bretticus · · Score: 5, Funny

      Well I feel like an idiot everyday of med school, so I am inclined to disagree.

  4. says the 60-something year old... by ecklesweb · · Score: 5, Funny

    [sarcasm]
    Yeah, like I'm going to pay any attention to a study by a guy who got his Ph.D. in 1974 whose brain has therefore been declining for at least 35 years...
    [/sarcasm]

  5. or maybe people get tired of stupid tests by Mr.+Slippery · · Score: 5, Interesting

    Or, maybe by their late 20s, people have had enough of stupid tests -- they're done with school and the day when success was measured by testing rather than real accomplishments are over. Being less interested and excited by tests, they score lower.

    If old age begins at 27, then I can say that from over a decade in, it's not so bad. I can still kick 20-somethings butts. I just wish those darn kids would stay off my lawn. (True -- I live near a middle school and the bastards keep cutting through yards to walk to school...)

    --
    Tom Swiss | the infamous tms | my blog
    You cannot wash away blood with blood
  6. Noooooo! by pdabbadabba · · Score: 4, Funny

    As a 26-year-old, let me be the first to say:

    "Nooooooooooooooooooooooooooooooooooooooooooooo!"

    1. Re:Noooooo! by interkin3tic · · Score: 5, Funny

      You think you have it bad, I'm 27. I was going to say something like "wooo! That means I'm at my peak." Then I realized that it said, right there, that 22 was the peak. Also I'm wearing my Mr Rogers cardigan, I told myself I was wearing it ironically, but now I see that for the lie it is. So enjoy these last few months when you can finish the summary before jumping to conclusions and can actually wear old person clothes ironically.

    2. Re:Noooooo! by Sponge+Bath · · Score: 4, Informative

      The time is gone, the song is over,
      Thought I'd something more to say.

    3. Re:Noooooo! by reverseengineer · · Score: 4, Funny

      As a 27-year old, I realize that I have completely spent the peak years of my intellectual capacity having made no greater contribution to the advancement of the human race than a few hundred Slashdot posts....




      Yeah, I can live with that.

      --
      "FDA staff reviewers expressed concern about the number of patients who were left out of the study because they died."
    4. Re:Noooooo! by meringuoid · · Score: 4, Interesting

      As a 27-year old, I realize that I have completely spent the peak years of my intellectual capacity having made no greater contribution to the advancement of the human race than a few hundred Slashdot posts....

      Ever paged through an archived /. article on some topic of interest you're looking up - maybe you're in a discussion elsewhere and you think 'hang on, wasn't there that thing I read about a few years back where...' and you Google it and it turns up the /. page - and while reading through the comments for that article you come upon one that perfectly sums up exactly what you had in mind, exactly what you wanted to say, and does so concisely and clearly, far better than you ever could have put it?

      And then you look at who wrote that comment...

      ... and it's you?

      Because if as we're told it's all downhill from 27, then I suppose I'll have to expect a lot more experiences like that.

      --
      Real Daleks don't climb stairs - they level the building.
  7. Uh-huh by SatanicPuppy · · Score: 4, Insightful

    Bit of a flamebait headline, eh? I know I'm not mentally as fast as my 3-year old (watching his little brain hum is a bit awe-inspiring...hard to believe I ever learned at that pace), but at the same time my actual skills are vastly more advanced.

    Likewise, I'm sure I was more mentally agile at 18 than I am now at 30, but I know for a fact at 18 I wasn't even a tenth the coder I am now: some of the things I remember struggling with are trivial now, and my productivity is dramatically higher.

    So yea, youth and energy are nice, but they fade as experience comes to the fore, and experience carries you until the real mental infirmities kick in.

    --
    ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
  8. Confounding Variable by TheMeuge · · Score: 5, Insightful

    ... or perhaps the reason they saw declining figures starting at the age of 27, is that older people who are more intelligent, tend to not have the time, choose not to waste the effort, and do not need the $100, to participate in these kinds of studies.

    That's the problem with doing these kinds of studies as a point-measurement across an age-range. The test groups cannot possibly be equivalent, unless a VERY large sample is taken at random from the population. Frankly, I'll have trouble believing such a study unless it's a prospective study that tests the same volunteers across a span of their lifetime.

    1. Re:Confounding Variable by bitt3n · · Score: 5, Funny
      intelligence is like pornography:
      • it's hard to define what it is
      • it's easy to identify when you see it
      • it perpetually frustrates organized religion
    2. Re:Confounding Variable by yali · · Score: 4, Informative

      Googling the name of the journal, Neurobiology of Aging, leads to the abstract for this study:

      Cross-sectional comparisons have consistently revealed that increased age is associated with lower levels of cognitive performance, even in the range from 18 to 60 years of age. However, the validity of cross-sectional comparisons of cognitive functioning in young and middle-aged adults has been questioned because of the discrepant age trends found in longitudinal and cross-sectional analyses. The results of the current project suggest that a major factor contributing to the discrepancy is the masking of age-related declines in longitudinal comparisons by large positive effects associated with prior test experience. Results from three methods of estimating retest effects in this project, together with results from studies comparing non-human animals raised in constant environments and from studies examining neurobiological variables not susceptible to retest effects, converge on a conclusion that some aspects of age-related cognitive decline begin in healthy educated adults when they are in their 20s and 30s.

      In other words, the researchers were wayyyy ahead of slashdot. They analyzed both cross-sectional and prospective longitudinal designs. They modeled and controlled for potential confounds due to (a) sampling bias in cross-sectional comparisons (point raised by grandparent) and (b) practice-effect biases in longitudinal comparisons (because if you take any test twice, you'll probably do better the second time). They also validated their results with other methods (like neurobiological assessments). What they got was a convergence of results from multiple methods, which is exactly what good science is supposed to be.

  9. YMMV by mcgrew · · Score: 4, Interesting

    My mental abilities declined severely in 1976 when I was in a terrible auto accident. They improved markedly over the next ten years.

    Knowledge, practice, and experience more than make up for the so-called "decline". Why is it that slashdot's geezers know the difference between "lose" and "loose", and between their, they're, and there? Maybe because they've had more time to read more books and figure out the context of those words' uses?

    I used to be fast, I could catch a fly in mid flight with my bare hand. Now I can only catch the old flies.

    As to your question, see my sig.

  10. It's happened to me and it sucks by Maxo-Texas · · Score: 4, Interesting

    Chemo did a number on me too.

    But just getting older I can feel myself slipping away. A little less snap. A little slower reactions. The memory is also not that great (wasn't to start with).

    It ruins some of my hobbies like Ultimate and Boardgaming because there are no age/skill brackets for those activities like there are for softball.

    Ultimate is particularly bad because there has been a big push to get ultimate down to 13 year olds. So now you have people with 18 year old bodies and 5 years experience coming out to play "pickup". This leads to long periods of watching them run around like gazelles tossing the disk back and forth to each other. The only thing they can't do is fake well.

    Boardgaming- perhaps because of BSW or perhaps because of boardgamegeek has gone the other way- along the brain axis. Where boardgamers used to be a mix of average folks, increasingly you have certifiable genius's. Likewise, the games have gone away from dice to pure logic/player interaction over the past 8 years and these brainiacs can see almost to the end of the game from the first turn. And the bad part is that 10 minutes in, I can see if I've lost and now i have to sit through another 45 minutes until the actual loss. No handicapping, no dividing into different play classes.

    I find the lack of handicapping to be an expression of our "winner take all" society. I guess I need to either start a group with handicapping or move on to other activities.

    ---

    Other things you lose are sense of smell, sense of touch, and sense of taste.

    So don't give up your life from 18 to 30 so you can "have a good life" because you are giving up your best years.
    Definitely have some fun along the way.

    --
    She was like chocolate when she drank... semi-sweet at first and then increasingly bitter.
  11. 39? by chromis · · Score: 4, Informative

    I always thought that the brain works best at 39 ;) http://science.slashdot.org/article.pl?sid=08/10/27/1630225

  12. Similar car-crash experience by smellsofbikes · · Score: 4, Interesting

    In my case it was in 2000, and I spent a year having a lot of trouble reading sentences and managing to follow the meaning. I could handle Dr. Seuss. It's gotten consistently better since then, although I'm still nowhere near as conventionally smart as I was.
    What I find interesting is that although I feel like I'm the same person, my friends say I'm a much nicer, more considerate person now, and that I accomplish a lot more because I'm more persistent and organized -- because I have to be, since I have a lot of issues with short-term memory.
    When I was going to a cognitive therapist, one of the things she mentioned was that in some ways they were going to treat me for aging, as much as the accident. She said, four years ago, that she felt like people peaked mentally at about 30, and she wanted to see if she could do stuff to just ward off age-related decline so I'd be about as smart as I would have been anyway. I was prescribed two different types of anti-Alzheimer's medication and wowie, were they amazing in terms of focus and memory. I wish I could afford to keep taking them. Breathtakingly expensive but seriously amazing effects.

    --
    Nostalgia's not what it used to be.