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Science's Biggest Failure: Everything About Diet and Fitness

HughPickens.com writes: Scott Adams (of Dilbert fame) writes on his blog that science's biggest failure of all time is "everything about diet and fitness." He says,

"I used to think fatty food made you fat. Now it seems the opposite is true. Eating lots of peanuts, avocados, and cheese, for example, probably decreases your appetite and keeps you thin. I used to think vitamins had been thoroughly studied for their health trade-offs. They haven't. The reason you take one multivitamin pill a day is marketing, not science. I used to think the U.S. food pyramid was good science. In the past it was not, and I assume it is not now. I used to think drinking one glass of alcohol a day is good for health, but now I think that idea is probably just a correlation found in studies."

According to Adams, the direct problem of science is that it has been collectively steering an entire generation toward obesity, diabetes, and coronary problems. But the indirect problem might be worse: It is hard to trust science because people have become accustomed to learning that they've been steered wrong. "I think science has earned its lack of credibility with the public. If you kick me in the balls for 20-years, how do you expect me to close my eyes and trust you?"

37 of 958 comments (clear)

  1. Science... Yah! by Press2ToContinue · · Score: 3, Insightful

    Because what is the alternative? Alchemy? Voodoo? Religion?

    Alex, I'll take "Flawed Science" for $1,000.

    --
    Sent from my ENIAC
    1. Re:Science... Yah! by Anonymous Coward · · Score: 5, Insightful

      The problem is that much of this diet stuff has been agenda-driven, rather than driven by actual studies and data. There hasn't been much actual "science" performed.

      For instance, the original Food Pyramid said that grains should make up the bulk of your diet. This was agenda-driven, not science driven. The point was that we were subsidizing farmers to grow grains, and so had quite a lot of grain, and quite a lot to sell.

      In the 80's, consumption of fats and cholesterol were big "issues," but we now know that fat and cholesterol doesn't just go into your bloodstream as fat and cholesterol. Your body metabolizes and transforms them into other chemicals, which then may or may not affect the fat and cholesterol in your body. No study on metabolism had been done prior to this. No study of the affect of consuming these things had been done prior to this. The whole thing was very hand-wavy and inaccurate.

      In the 80's you also had another lobby (discussed in "Fat Head" but I'm too young to remember the name). These people represented themselves as scientists, but actually were pushing a vegan agenda. While veggies *are* good for you, there was no science behind what they were selling, either. They just wanted you to stop eating meat. Their materials spread like wildfire, and are part of why McDonald's stopped using beef tallow to fry its fries. Instead, they switched to rapeseed oil. Frying in beef tallow is much healthier, as consuming foods fried in rapeseed oil will increase your blood cholesterol.

      If you're taking this "flawed science," you're only taking it because the people who are presenting it dressed themselves up in lab coats. These folks weren't performing any studies to back their inaccurate claims.

    2. Re: Science... Yah! by Kielistic · · Score: 5, Insightful

      You are ignoring economies of scale and the benefits of longer shelf-life.

    3. Re: Science... Yah! by scrib · · Score: 5, Insightful

      No time to cook and yet the average American watches almost 5 hours of TV per day. (The number of hours watched per day actually climbs steadily as you get older, from around 2 to 7 hours per day.) You can even watch TV while you cook!

      I also don't believe for a moment that "unprocessed" foods are more expensive. Rice, beans (dried or canned), frozen vegetables, canned tomatoes or paste, basic spices, and even most fresh produce costs less than highly processed foods like chips or microwave meals. Meats and dairy may seem more expensive to buy straight out, but those highly processed foods are not bargains loaded with lots of good meat and quality cheese; they have just enough to get you to buy the thing and lots and lots of salt.

      I think the problem is education. I suspect there is a growing population of people who really don't know how to take basic ingredients and turn them into a meal. It does change the equation a bit when you have to take care of kids. That's one of the things that my parents and grandparents did: cooking was family time.

      --
      Help! Help! I'm being repressed!
    4. Re: Science... Yah! by Anonymous Coward · · Score: 0, Insightful

      Science actually figured it out about 100 years ago: it doesn't matter much what you eat because unless you embark on a weird diet you will get all the nutrients you need; and the way to maintain weight is to eat the right _amount_ of food. People worry about third order effects and ignore the first order principles. It's not "science's" fault that people don't want to bother learning what's already known about how things work.

    5. Re:Science... Yah! by fractoid · · Score: 4, Insightful

      This, absolutely this. I believe the number one reason many people choose to disbelieve that energy balance is the primary determinant for weight gain/loss is simply that they don't like the answer it gives them: That to lose weight, you have to eat less food and that this means sometimes feeling hungry.

      Magic, pills, voodoo, fad diets, resonant crystals, homeopathy... ANYTHING but having to exercise self-restraint.

      --
      Rampant carbon sequestration destroyed the Dinosaurs' tropical paradise. I'm here to help repair the damage.
    6. Re:Science... Yah! by TWX · · Score: 4, Insightful

      Well, it's not exactly easy when food is so damn abundant, and lots of prepacked things are "portioned" for more than one person but are sized where one person can eat the contents easily.

      I think that for prepackaged food products, if there's no way to reseal the packaging provided, then the calorie content and other information on the packaging needs to state the total for the entire contents, not for some obtuse 2.5 servings. For prepackaged food where there is a way to reseal, the number of servings needs to be prominently displayed on the front and both the nutritional information per-serving and the total sum for the entire package need to be displayed.

      --
      Do not look into laser with remaining eye.
    7. Re:Science... Yah! by itzly · · Score: 5, Insightful

      No, but reducing dieting to just the laws of thermodynamics makes a mockery out of the whole thing. It's like the Seahawks coach explaining that the secret to beating the Patriots is to score more points than them. While technically true, it doesn't help anybody.

    8. Re:Science... Yah! by theshowmecanuck · · Score: 4, Insightful

      I switched to low carb (not no carb) and higher fat (not all fat) diet. It makes me feel full longer. The fat and protein make me feel satiated and I don't feel hungry. Consequently I eat less. So far I've dropped 35 lbs and am continuing to lose weight. I also resumed swimming regularly. Yes you have to eat less than you burn. But what you eat can significantly affect how hard that is. If you are always feeling hungry, you'll never keep at it. And occasionally I do have a carb binge. Go to the movies and eat a large bag of popcorn, or have some pie. Then I put that behind me and do good for a couple more weeks. Eating low carbs has the added benefit of lessening the feeling to eat chips and pies and popcorn, etc. But every now and then is nice and I don't have the urge again for a long while. From this I have come to believe that our institutionalized consumption of carbs, including pastas, breads, and sugar has made us addicts of them, and that they aren't needed. At least not needed in the kinds of quantities we have traditionally eaten them.

      --
      -- I ignore anonymous replies to my comments and postings.
    9. Re: Science... Yah! by rvw · · Score: 5, Insightful

      Science actually figured it out about 100 years ago: it doesn't matter much what you eat because unless you embark on a weird diet you will get all the nutrients you need; and the way to maintain weight is to eat the right _amount_ of food. People worry about third order effects and ignore the first order principles. It's not "science's" fault that people don't want to bother learning what's already known about how things work.

      The problem is that eating has one major other function besides nutricion: stress release. And then another power kicks in: positive reinforcement. Eating makes us feel less bad (less stress) and thus makes us feel good or at least better. There are some very tricky mechanisms that work to keep us in this trap. Once you start to eat more to feel better, it will be very difficult to undo that habit. And it's all about habits. If you start running daily, and you feel good about it, it's positive reinforcement once again, and it may compensate. Changing your daily habits is the way to go.

    10. Re: Science... Yah! by Crashmarik · · Score: 3, Insightful

      They believe in models they don't understand and couldn't even be specific about which of the models they believe in.

      The deniers don't understand the models any better. It's the same faith working here, but in the opposite direction. Now, if you want to discuss the actual scientists, it's a different matter.

      The skeptics understand that the predictions made by the models have yet to be accurate. So while the believers have faith, the skeptics have evidence.

    11. Re: Science... Yah! by serviscope_minor · · Score: 5, Insightful

      Well, that wasn't a problem with PTFE being non toxic, it was a problem with PTFE decomposition products being toxic. Wooden spoons are non toxic too, but if you set fire to a bunch of them and breathe in the results, hilarity will ensue. Likewise with stainless steel: if you manage to oxidise it heavily enough I think you will find that the higher oxidation states of chromium won't do you a lot of good either.

      Stickiness is rarely a problem if you lubricate properly before cooking and deglaze afterward.

      It's not a huge problem: I'm perfectly capable of cooking without non-stick, but it often makes my life easier, so I use it where appropriate.

      --
      SJW n. One who posts facts.
    12. Re: Science... Yah! by jdagius · · Score: 3, Insightful

      At least the skeptics understand that the climate models don't work and have seriously overestimated the impact of CO2 forcings on global temps.

      When you deny chicken-little theories that "the sky is falling", the onus is not on the denier to come up with a better sky-is-falling theory, because the null hypothesis is that the sky is not falling.

      Yet climate scientists have succeeded in convincing everyone that CO2-causes-all-climate-disasters is the null hypothesis, without providing any compelling proof of that hypothesis (except for "This has hardly ever happened before so, 'what else could it be'?'").

      Otherwise explain why global temps haven't kept up with the Keeling curve? (Oh yeah, I forgot. There are at least 57 reasons cited for that. The best is "The heat is hiding in the oceans") :-]

    13. Re:Science... Yah! by DoctorBonzo · · Score: 3, Insightful

      "7700 is the kCal in a kg body weight, if you're curious."

      ... and this is the reason that "nutrition" should be considered absolute horseshit by anyone with a serious scientific understanding.

      Calories are energy and kilograms are mass. Conflating them in a non-relativistic way is just plain wrong. That they happen to be somewhat monotonically related when talking about food and body weight is misleading at best. I don't know if it stems from "nutritionists" ignorance of physics and actual science or is just an attempt dumb things down enough for the unwashed masses, but it makes the case that "nutrition" is no more than voodoo and superstition.

      No wonder the public doesn't understand science.

    14. Re:Science... Yah! by NeoMorphy · · Score: 4, Insightful

      Even without the added sugar, fruit juice is not good for you. It would be better to eat the original fruit than to take a bunch of them and run them through a juicer so you can get an instant sugar high. When you eat the original fruit it takes your body longer to extract and use the sugar.

  2. Not the fault of science by crioca · · Score: 4, Insightful

    If Scott Adams thought that, it's because he didn't do the necessary research to act as an informed consumer, and instead just took articles at face value when the referenced miscellaneous "scientists" and "researchers".

    1. Re:Not the fault of science by Euler · · Score: 5, Insightful

      Yeah exactly, his cynicism is off the charts (and misplaced)

      Science did not tell us to avoid natural fats in our diet, it was the: USDA, FDA, AMA, etc. etc. It was government and industry associations, sensational journalists who won't or can't deal with basic stats, not scientists. On the contrary, there is a body of scientific works that are basically saying 'told you so.'

      The jump to connecting this to climate change had zero supporting evidence in this article. If there was a pattern of provable deceit by a majority of scientists, then show it...

    2. Re:Not the fault of science by markabq · · Score: 5, Insightful

      One might be forgiven for having thought that the USDA, FDA, and AMA might have some legitimate science behind their recommendations. Over time, we've learned that this was not a safe assumption, but there was an era when it must have seemed reasonable to people.

    3. Re:Not the fault of science by ZahrGnosis · · Score: 5, Insightful

      It was absolutely the best science that the 1970s had to offer. The fact that it turned out to be wrong was due to a large number of factors, but not that it wasn't "science". One good article of many is: http://www.wsj.com/articles/SB10001424052702303678404579533760760481486, which references a lot of large controlled scientific studies that, yes, had issues, but were still the best of the time. There were ALSO studies that came to other conclusions, but remember that there are real studies by real scientists (by any useful definition) that come to all sorts of wrong conclusions. There will always be someone to say "told you so", no matter how ludicrous their position seemed by the majority at the time -- even if the majority includes most of the scientists; if those scientists are later wrong.

      People equate science with truth, and that's simply wrong. Science is a process, a mechanism to expand our knowledge, but it's fallible, and rarely results in absolute truths. As the linked Scott Adams article says, Science is about nudging us towards improvement, and I agree. The public face of science is, unfortunately at times, journalism, government and other, equally human equally (if not more) fallible entities -- but those people did listen to scientists; they didn't just make stuff up (most of the time).

      Science has an image problem, though, and it IS self-inflicted. We're coming across as arrogant to the scientifically illiterate, rather than nurturing, and it's turning people away. We label people "deniers" when they're genuinely curious, and they get defensive, and it's all downhill. We get combative and then pretend that it was someone else's misunderstanding when our consensus is wrong. Science is the right approach, but when it loses a popularity contest, particularly in a democracy, it's can get pretty bleak for a while. There's no reason that needs to happen, but denying the problem isn't the answer. We should embrace the dialogue that Adams is a part of here.

    4. Re:Not the fault of science by Beck_Neard · · Score: 3, Insightful

      One notable example is milk. There is no scientific study anywhere that shows that milk is necessary or even healthy for adults. Yet milk has become so ingrained in our culture that it's almost become a sign of healthy eating (when it's not). This is largely due to the advertising efforts of the milk industry (which is one of the largest industries in the USA and many other countries). Milk contains saturated fat which has proven negative effects on health (yes, even skim milk has saturated fat). The only good thing about milk I can think of is calcium, but you can (and should) be getting that through other means, such as vegetables.

      Most 'nutritional information' you know is a result of industry advertising and is not true.

      --
      A fool and his hard drive are soon parted.
  3. The problem isn't science by JBMcB · · Score: 5, Insightful

    The problem isn't science. The problem is science reporting. A study making come claim makes for a catchy headline. Problem is, it's just one study, usually calling for more studies with guidance at the end. That's the bit that's usually left out.

    A few years ago a European health organization did a huge study of cell phone safety. Thousands of trials across dozens of countries over the course of a decade. Of the thousands of trials - ONE showed a *possible* correlation between one form of cancer and cell phone usage. What was the headline? Study shows that cell phones cause cancer! What was the official conclusion of the study? Cell phones probably don't cause cancer, but the one trial should probably be re-run just to make sure.

    --
    My Other Computer Is A Data General Nova III.
  4. Re:Nutrition science isn't by Hussman32 · · Score: 4, Insightful

    I think some of the issues are that:

    -The necessary biochemistry needed to really analyze the effects of nutrition is still in development.
    -Food processing in general is a recent adaptation (less than a lifetime), and the effects of it are just now being understood.
    -The number of degrees of freedom (food types, component chemicals, varied responses to each chemical, factorial responses to multiple combinations, genetics) combined with the inability of really knowing what test subjects eat over a long time make rigorous experimentation impossible.
    -The fact that the human body can metabolize so many chemicals effectively with such delayed responses...it takes years for someone who was thin to get fat sometimes. Many of the food companies know that Twinkies are delicious, and they were not shy about pushing that crap down easily impressionable young kid's throats.

    It's getting more informed now, but if you look back the food pyramid wasn't necessarily bad, even today it's okay to have proteins, vegetables, breads, and dairy, it's the proportions and processing that are under scrutiny.

    --
    "Who are you?" "No one of consequence." "I must know." "Get used to disappointment."
  5. "Cartoonist Mistakes Dumbed-Down News for Science" by iggymanz · · Score: 4, Insightful

    better headline, fixed that for you.

  6. Mod parent up. by khasim · · Score: 4, Insightful

    You CANNOT go by what some article says about what "science" has now "found" about X.

    The idiots writing the articles are idiots AND they're writing the articles for maximum sensationalism.

    Dude! Use your BRAIN!

    1. Re:Mod parent up. by HBI · · Score: 5, Insightful

      OK. Explain the doctors - both GPs and cardiologists - who have been demanding people switch to high carb low fat diets for 40 years plus. They are unscientific? The layperson who visits one should make independent judgements about the diet advice offered by a supposed expert?

      This is "blame the victim" mentality at its best.

      --
      HBI's Law: Frequency of calling others Nazis is directly correlated with the likelihood of the accuser being Communist.
    2. Re:Mod parent up. by flink · · Score: 4, Insightful

      Most GPs aren't scientists. They are basically "meat mechanics". They learn the best practices in their field when they go to school and if they are good they keep up with changes to practices. But they are people too and are still susceptible to falling prey to fads and superstition even if their education provides them some resistance.

  7. Re:"Cartoonist Mistakes Dumbed-Down News for Scien by Cafe+Alpha · · Score: 4, Insightful

    Nope he's got it correct.

    The FDA has been faking the science on diet ALL ALONG.

    They NEVER TESTED their diet advice, not for heart disease, not for much of anything. There was an excuse that it would cost too much and take too long and might never be conclusive ... which is no excuse for promoting bullshit, but promote bullshit they did.

    And the world ate it up, and everyone pretended that mere guesses were settled science.

    The FDA is set up to test drugs that companies will make money on. But you can't patent nutrition information so it can't fund nutrition research.

  8. Re:Vitamin Testing by wvmarle · · Score: 4, Insightful

    When you eat properly, there is no need for any vitamin supplement, period. You can get all vitamins and minerals and whatnot from your food - people have done just that for thousands upon thousands of years. There's no reason why we suddenly can't do that any more.

  9. The backwards approach to fitness is the problem. by p00kiethebear · · Score: 3, Insightful

    Everyone I know equates a good diet with being healthy. A more important aspect is the activity level and physical exercise. When I was a state champion level gymnast my health was amazing. I had six pack abs at the age of eleven because I worked out and trained 20 hours a week. During that time I ate mcdonalds every day. I ate fries at school. Milkshakes, candy bars. Any source of calories I could get. And my health was phenomenal. Everyone (but women especially for some reason) seems to think that a 'healthy' diet is the answer when what they really need is to work more. I'm not saying healthy eating is bad. But if you don't use your body it will never truly be your tool and always be something your working against rather than working for you. Use your body or it will atrophy in every way.

    --
    The Blade Itself
  10. Why worry? by msobkow · · Score: 4, Insightful

    Eat a good meal. Enjoy it. Stop stressing over the details. Stress is worse for you than a few extra pounds.

    No matter what you do, you're going to end up dead at the end of the game. It's just a matter of when.

    Personally I'd rather enjoy my life and my food now than live a few extra years gumming gruel in the nursing home.

    --
    I do not fail; I succeed at finding out what does not work.
  11. Re:Vitamin Testing by DerekLyons · · Score: 3, Insightful

    When you eat properly, there is no need for any vitamin supplement, period. You can get all vitamins and minerals and whatnot from your food - people have done just that for thousands upon thousands of years.

    Contrary to your paleo-bullshit, people have been dying, or having their life expectancy significantly shortened, due to nutritional deficiencies for thousands upon thousands of years too. (I.E pellegra, scurvy, goiter, etc.... etc...)

  12. "Energy Balance" an overly simplistic view by SuperKendall · · Score: 4, Insightful

    If all that matters is "Energy Balance" how is it you can feed some people 10,000 calories per day and only get an increase in body weight of 18%? Why are you ignoring the reality that some people simply can eat anything and stay skinny?

    The body is a complex system and just to think of energy in and consumed is ignoring the ways the body metabolizes and processes different forms of food coming in.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re: "Energy Balance" an overly simplistic view by beav007 · · Score: 5, Insightful

      Almost. It's not the calories that you eat that matter, however. It's the calories that you ABSORB vs the calories that you burn.

  13. Re:Wrong by quantaman · · Score: 3, Insightful

    Am I the only having trouble figuring out if this post is satire?

    --
    I stole this Sig
  14. Re:The credibility of science? by Rei · · Score: 3, Insightful

    Show me a study that can relate a high fat low carb diet

    It's almost as if the previous poster just wrote, "not all fats are the same".

    Which is, by the way, absolutely true. "Fat" is a very broad class of molecules which have differing health consequences. Even subcategories like "omega-6 LA", "omega-3 ALA", "saturated fat" and "trans fat" each represent many molecules, and it's likely that by breaking them down further one will find further variation within each group. And this is already happening.

    The problem here is not what Scott "Global Warming Is A Lie" Adams makes it out to be, it's about his usual confusion of what scientific research is saying and what the public's belief that science is saying is

    Nutritional science had in the beginning to work out the most broad truisms, and has since worked to refine them further and further. They found, for example, that animals withheld certain chemicals would develop deficiencies, isolated and identified these necessary agents, and labelled them as vitamins and minerals. Naturally companies immediately started capitalizing on this by making and promoting multivitamins, but there never some body of peer-reviewed research behind their claims, there was never some metastudy published in Nature saying "everybody needs to take daily multivitamins!" or anything even close to that. Likewise, early scientists also studied the significant differences in health between rural populations eating diets high in fruits and vegetables, and city populations with diets high in salt and fat. So they were able to break out these two very specific diets into "this one is associated with less disease than that one". It's been a long process ever since to refine it further and further down into specific causative elements in the diets.

    The specific criticism of the 1992 Food Pyramid is a glaring example on Adams' part. The Food Pyramid isn't a scientific publication, it's an infographic made by a government agency. It's been criticized as being poor right from the beginning, not due to changing science, but just simply a bad product. But it was just one in a long line of USDA products, and it's the only one of them to show an unusually large grains segment. It should be noted that USDA infographics have changed more over time due to differing political realities than due to any changes in science - for example, the diet promoted by the USDA during the Great Depression was heavily influenced by cost, while during World War II it was influenced by food rationing. USDA products always have some basis in science, but they are not themselves science and are full of compromises and oversimplifications. The main oversimplifications of the 1992 pyramid was not the WHO report that it was based on, but that they conflated different recommendations together in a confusing manner. In particular, the fruits and vegetables sections were supposed to be seen as minimums, while others were supposed to be seen as maximums, and the fat on the top was only supposed to represent pure fats (butter, for example) but not fats found in other foods elsewhere on the pyramid. The WHO reports have been updated since then based on the latest science, but their recommendations have remained quite similar (mainly just more precise in breakdowns - for example, breaking down different types of fats). The fact that the USDA infographics have changed so much is not a reflection of changing science, but simply the recognition that the 1992 pyramid was an awful product.

    --
    I would have you sign my banana, but it's on the roof.
  15. Re:je ne sais quoi by ArmoredDragon · · Score: 3, Insightful

    I think you don't understand the difference between "alkaline" and "alkalizing". If your body is to maintain a constant pH, how can it do that if you eat something with a lower pH?

    Probably because the homogeneous liquid called "lemon juice" doesn't actually end up in your blood. Instead it ends up being broken down into its components, the divided sum of which doesn't have the same ph that it had when it came in. The same is true of any substance with a varying ph.

    Your kidneys, lungs, and liver all play a vital role in determining the ph of your blood, and don't allow it to exceed a certain range (the blood itself is a buffered solution, which resists changes to ph anyways.)

    Any diet book, website, or tv show you've seen that tells you to try to make your blood more alkaline should NOT be trusted. Your blood is kept slightly alkaline, and pushing it further in that direction can be deadly. Fortunately nobody dies from that because diet rarely impacts the ph level of your blood.

    But it's still possible to adjust your blood's ph anyways. A common way of artificially doing that when somebody's organs aren't properly controlling CO2 levels (which affect the acidity) is to take sodium bicarbonate pills, because the sodium bicarb binds with the CO2 in the blood near the intestines, effectively sapping it from your blood, raising its ph.

  16. Diet and Exercise by darkmeridian · · Score: 3, Insightful

    Science has been inconsistent on diet. However, it's hard to blame science for fat people because science has basically said that you have to: (1) count calories; (2) eat fruits and vegetables; and (3) exercise. On the margins, science might be wrong on moderate alcohol consumption, healthy fats, etc. But the average America is fat because they're not exercising, and eating ridiculous amounts of unhealthy foods that scientists have always said was dangerous as fuck.

    Don't forget that scientists discovered the link between smoking and lung cancer.

    --
    A NYC lawyer blogs. http://www.chuangblog.com/