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Wray Herbert

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The Vitamin Paradox: Do Nutritional Supplements 'License' Unhealthy Behavior?

Posted: 07/28/11 09:53 AM ET

Last night I had a chocolate milkshake for dinner. I don't eat like this all the time, but often enough. I eat lots of salads, but I also eat cheeseburgers. And if I'm tired I eat pretzels or skip eating entirely. In short, I'm far from a nutritional purist.

But I take a multivitamin every day and have for as long as I can remember. I figure it's the least I can do for my personal health, plus it's easy and fairly cheap. I guess I'm hedging my bets.

And I'm not alone: Sales of nutritional supplements have grown dramatically over the past decade or so and now total more than $20 billion a year. More than half of Americans take some kind of vitamin pill. But here's the rub: Even though sales of vitamins have risen steadily, there has been no corresponding improvement in public health. Indeed, the opposite is true, with obesity and diabetes climbing perilously. What's going on here?

A team of psychological scientists in Taiwan, led by Wen-Bin Chiou of National Sun Yat-Sen University, has been exploring this paradox from the perspective of behavioral "licensing." Licensing is the notion that when we do something that we believe is good for us -- like popping a vitamin -- this action ironically gives us permission to engage in subsequent bad behavior -- like munching potato chips -- adding up to a net loss. We make these perverse tradeoffs because doing something positive bolsters our "health credentials," which boosts our sense of invulnerability, which in turn encourages self-indulgence.

At least that's the theory, which the scientists tested in a couple of laboratory experiments. In the first, they fooled a group of volunteers into thinking they were participating in an unrelated study, for which some took a placebo and others a vitamin pill; this is what they were told, but in fact they all got the dummy pill. Afterward, they all filled out a survey about their preferences for leisure-time activities. Some of the listed activities were exercise-related -- yoga, cycling and so forth -- while others were immediately gratifying but hazardous in the long run -- sunbathing, heavy drinking, partying and casual sex. They also filled out a measure of their perceived invulnerability, rating phrases like, "Nothing can harm me." Finally, all of the volunteers were given a meal voucher, which allowed them to choose either a healthful, organic meal or a full buffet.

The scientists predicted that, because of psychological licensing, those who took the vitamin would choose less healthy alternatives later -- and that's just what they found. These volunteers were more interested in pleasurable but risky activities and less interested in exercise. They also were much more likely to opt for the rich buffet than the healthy meal. What's more, the ones who acted this way clearly did so because their nutritional licensing made them feel less vulnerable to health risks.

The scientists wanted to double-check the licensing idea a different way -- this time with actual exercise rather than mere intentions and desires. So they again led some volunteers to think they were taking vitamins, and others that they were taking placebos. Then they asked all of them to help test a pedometer, when in fact they were measuring how far each of them chose to walk. The results, reported on-line in the journal Psychological Science, were basically the same as before: Those who had pumped up their nutritional credentials by taking the vitamins walked less than the others. And what's more, they walked less even after being explicitly reminded about the health benefits of walking. In other words, they felt entitled to laziness because they had popped a vitamin pill.

This is troubling. Earlier studies have shown that people can get a sense of moral license from actual exercise, leading them to eat more -- and less-healthy foods -- afterward. But exercise has known health benefits, so it's at least an honest tradeoff. Vitamins may or may not enhance health -- the jury's really still out on that -- so it's a cheap and easy way to acquire moral license without any certain benefit. The sense of invulnerability is illusory, yet it feeds a feeling of entitlement to rewards -- and not just dietary rewards. It appears that people have a very general concept of their health and well-being, so that a simple vitamin can license misbehavior totally unrelated to nutrition -- casual sex and sunbathing and boozing. It's a license for a risky lifestyle, all in a single capsule.

 
 
 
Last night I had a chocolate milkshake for dinner. I don't eat like this all the time, but often enough. I eat lots of salads, but I also eat cheeseburgers. And if I'm tired I eat pretzels or skip eat...
Last night I had a chocolate milkshake for dinner. I don't eat like this all the time, but often enough. I eat lots of salads, but I also eat cheeseburgers. And if I'm tired I eat pretzels or skip eat...
 
 
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04:44 PM on 08/24/2011
supplements arent the way to go at all! If you take a capsule of Fish Oil- how many fish were pressed to make that? How many concentrated pollutants are in that tablet? Eating healthy is the way to go and not over eating either.
08:12 AM on 07/29/2011
There could be a problem with the study. Unless participants chose which group to be in, which seems unlikely, the "vitamin" subjects were not motivated by an interest in better health. Such interest that inspires people to take supplements probably extends to other choices such as food and exercise.
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chatnuptime1
Try some Icy cold reality.
05:30 AM on 07/29/2011
Well if your taking vitamins and such measures to be healthy why would one want to sabbatage it?
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03:52 AM on 07/29/2011
The author says the jury is still out on the benefits of supplements. Who does he think he is fooling? Every month the medical journals are full of positive supplement studies and the pharmaceutical companies are trying to alter these natural substances just enough so they can patent them and sell them as expensive prescription drugs.

Don't make the mistake of thinking you can get everything you need with a fork. Take a moment to learn about just one example: people are so deficient in magnesium that your risk of heart attack, stroke, etc. depends on how much magnesium happens to be in your water supply. People who don't take magnesium supplements are taking a very foolish gamble. Read "The Magnesium Lottery."

http://www.drumlib.com/dp/000014.htm
12:12 AM on 07/29/2011
Experienced vitamin takers can tell almost instantly, within minutes, the difference between placebos and normal, widely sold and used, nutritional supplement megadoses. This would all be just the same as if someone tried to test the effects of gin on people by serving martinis to half a group to test subjects, and then serving chilled, garnished water served in martini glasses to the other half – within seconds everybody would know exactly who the controls really are. The “experiments” listed here are all bad.

So anyway, Mr. Herbert, following your logic, does all this mean that you also intend to totally publicly oppose anything and everything having to do with the Worldwide Transhumanist Movement now going on, for all the same “behavioral licensing” reasons given here, too?

Can I have your job here at the Huffington Post, if your answer is yes? (*¬*)
05:52 PM on 07/28/2011
I don't eat breakfast. I don't want to. Maybe a hard boiled egg so I won't pass out in the early afternoon. Other than that my breakfast is coffee. I take a vitamin pill in the morning with a full cup of water (whether I want to or not) because coffee is not good hydration.

The FDA does not like that. They want -- as far as I can tell from their PSAs -- for me to cook asparagus for an hour and have asparagus for breakfast. I ignore them.

Really, the FDA says I am to eat 5 portions of a food like asparagus every day. The word "portion" is unknown to me and I can't find a dictionary definition of it so all I can figure is I am to eat 5 meals a day including breakfast with asparagus. There was even an ad from an egg lobby showing an omelette folded over asparagus as a breakfast.

I'll stick with my vitamin pill.
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hannav270
05:31 PM on 07/28/2011
this is nothing more than support for a move to stop vitamins altogether unless they are prescribed by a physician. big joke, here to the author of this article. with the kind of drs that we have now, people desperately need something nutritional to help with daily lives. the medical society does not want to be bothered with older people--they seem to be a nusiance to them. the medical profession is always whinning they don't have enough money but you sure can go in a hospital and see the waste of money there. prevention is the key to keep you from getting ripped off in our medical system of today, and i support vitamins whole heartedly. our food is becoming all gmo and what is in the stores is nutrionally deficient or pesticide decorated. i cannot believe that you would write such an ignorant and wasteful article, but it is america and you must be part of the new intellect being "developed" here.
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sillyfrog
Pastafarian UU student
07:46 PM on 07/28/2011
I agree with you. I was diagnosed with severe sleep apnea, prescribed that expensive machine to use. It turned out I was lacking Vitamin B which has the same symptoms. The first doctor was in it for the money or he was incompetent, maybe both.
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hannav270
10:48 PM on 07/28/2011
actually, i have been reading a lot about a major move in this country to stop vitamins period. it is not anything that our congressmen don't know about either. the fact that it has been so secret tells me that the reason behind it is more than likely to be one about greed. I think that in gt britain it has already happened with a few of the vitamins. when you sit down and read all the horrendous side effects from the medicines that drs prescribe, it should give one a real chill. it is not a good thought at all to even think that this country can get away with removing all vitamins but they are actually trying for all supplements and anything in the natural arena and i have seen that many of our congressmen support this. so it bothers me a lot on this issue because i truly feel that our younger children also need these vitamins. but drugs is probably the biggest money making business in the country and if they can control the supplements, they will have a complete monopoly on it all. that is a real ouch!
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pepper1311
POGS are dirt
03:59 PM on 07/28/2011
Sun bathing, partying, heavy drinking and casual sex at my age would be enough exercise. Well maybe some penicillin and vitamin C.
03:28 PM on 07/28/2011
Wow... this is such an ignorant article. I can't even begin ? First of all, you pretend that one pill is enough -- anyone who has submerged themselves into the subject knows that one pill will not bring you excellent health. Neither will poor eating habits combined with one pill. You don't even address the fact that there are cheap vitamins and there are high quality ones.

The sad fact that our food now-a-days is so deficient in nutrition is bad enough -- combine that with bad food additives -- high fructose corn syrup, aspartame, BPA found in many plastic containers/wrappers, food colorings, GMO's, hydrogenated oils, phosphoric acid, sodium nitrate, etc., etc., etc. -- and you begin to see that it is a huge trend that needs reversing.

It is not just the fact that you are deficient, it is also the fact that there is a high level of toxic elements coursing through your system. It's not enough to throw a table spoon of sugar on the ocean and claim that it should now taste sweet. It is ignorance.

Oh -- and I don't believe the jury is still out on vitamins. It is common knowledge and there have been many studies around the world proving the effectiveness of the nutrients. Just because the FDA is unwilling to accept those studies and most medical journals do not usually print studies on vitamin effectiveness, does not change the facts.
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Sister Bluebird
04:26 PM on 07/28/2011
Well you know, it's all about making the Supplement industry look bad, along with the culture that utilizes it. I mean what's a poor drug company to do? All those natural substances that cannot be patented?
06:41 PM on 07/28/2011
Hahahah.... too right. I shouldn't laugh, but it would be even funnier if it were not true.
08:58 PM on 07/28/2011
They do not even teach nutrition in medical school, and haven''t been for a long time. Drugs are given out like vitamins, usually without any warnings about side effects. And the FDA is basically run by Big Pharma and also funded by them.
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02:53 PM on 07/28/2011
I have been taking supplements since the '80s. I don't think they make up for unhealthful habits.

Maybe I'm in the minority.
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Sister Bluebird
04:26 PM on 07/28/2011
Same here. I think that the author of this article is focusing on day-trippers, johnie come lately vitamin takers. But that is convenient isn't it?
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exxman
I Am The 99%
04:41 PM on 07/28/2011
I have a similar story. When I started taking nutritional supplements I started exercising, cut back the alcohol, stopped sunbathing and changed my diet to more healthy choices. Taking supplements and continuing the unhealthy behavior doesn't make any sence to me.
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sillyfrog
Pastafarian UU student
09:58 AM on 07/29/2011
I disagree, especially for people that are addicted and if there are supplements that will stall or curb side effects they should use them.
01:57 PM on 07/28/2011
This is a fantastic, absolute correct and spot on study. I have been preaching this my entire life. I am a gym-nut; I work out five days a week. I have good size, but could loose a few lbs around the waist. Not only have I experience the psychological licensing, I have witness people failed miserably at loosing weight and getting in shape while trying to work. They get frustrated at their inability to accomplished their goal, and always stressed how hard they work out. When, however, asked about there diet, the answer is always the same: they indulged more because of the time they spent in the gym, not realizing that whatever is accomplished in the gym is for naught because of their indulgence licensing.
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Sister Bluebird
04:29 PM on 07/28/2011
22 million people in the US suffer from subclinical hypothyroidism. And that's just one aspect of it. Loosing weight is one thing. Keeping it off another. Understanding health conditions that lead to weight gain- well even doctors don't get that one as often as not.

If they are eating nasty food after they work out or because they work out, then ask yourself what is in the food that causes such un natural cravings. Helping people understand the additives in foods that make them feel hungrier than they are, would go a long way. Sometimes anger at being manipulated can counteract the desire to stuff one's face.

Unconditional positive regard never hurts as well.
06:59 PM on 07/28/2011
Why do you want the weight around your waist to be loose ?
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sillyfrog
Pastafarian UU student
10:01 AM on 07/29/2011
:))
01:45 PM on 07/28/2011
Sure, I can believe that both the entitlement and the "sense of invulnerability" probably do happen, at least in some of us... but I'd say the better solution to those attitudes is cultural or psychological
-- educate people re' healthy eating, and
-- start programs to deal with emotional components of life (including emotional components of eating).

And keep the vitamins, too -- even with nutritional education and emotional healing in place, if you've got a deficiency, you can get cravings driven by your deficiency, that give you a struggle with your eating patterns.

So, learn, heal, eat well, get exercise, and take your vitamins :)
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Sister Bluebird
04:30 PM on 07/28/2011
Well said.
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charleyvldm9
He thinks outside the box.
01:45 PM on 07/28/2011
Vitamins are just SUPPLEMENTS to the real thing,so eat healthy all the time,they go hand in hand..
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Sister Bluebird
04:31 PM on 07/28/2011
As long as the person isn't suffering some underlying condition that makes absorption of certain nutrients, minerals etc., more difficult. Sometimes supplements make up for a serious lack in the body caused by an untreated condition. Other times it helps "supplement" a dearth that is chronic and has to be mitigated with extra forms of said nutrient.
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hannav270
05:41 PM on 07/28/2011
you are so right, but a big problem that i know for a fact that exists is that drs do not want to be bothered finding out if a heavy person has an underlying prob. they automatically assume that you are heavy because you eat everything in sight with no control.many times DNA plays a big part as well and there will always be a need for many different solutions to weight gain as far as i am concerned. i definitely take supplements but i make sure i am well informed about what i am taking and what it does and since it seems to be a prob for our drs. (mine said it takes too long , they don't have the time) there are plenty of drs online as well where you can research and get some help. your mail was a good one
12:47 PM on 07/28/2011
Or maybe the correlation is "people who are given a voucher for a free meal will pick the full buffet because it's a free meal." "Healthy organic" has less perceived economic value than "full buffet" - people see more economic value in a free full buffet than they do in a free healthy organic meal.
12:26 PM on 07/28/2011
Did the people in the study fill out a survey before? This is a ridiculous study and it is unfortunate that you have chosen to publish this nonsense.
By the way, the general health of the public will improve if people are educated about all nutrients especially all minerals - macro and micro - not just a few vitamins.
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Sister Bluebird
04:33 PM on 07/28/2011
It reminded me of reading about that feeling of invulnerability by teens, when undertaking risky behaviors. I wonder at the median age.