Cover Image: September 2009 Scientific American Magazine See Inside

The Effect of Our Surroundings on Body Weight

Researchers point to external causes of--and fixes for--the obesity pandemic














Share on Tumblr

Given the importance of the environment on obesity, many researchers, including Brownell, argue that we need new laws and social policies to combat obesity. Brownell’s controversial proposals suggest, for example, regulating food advertising aimed at children, prohibiting fast foods and soft drinks in schools, and subsidizing healthy foods.

Taxation is another potentially effective means of reducing consumption of harmful products, as the tobacco tax has demonstrated. Brownell and Thomas Frieden, who now heads the Centers for Disease Control and Prevention, have argued for a tax on one of the biggest contributors to obesity: sugar-sweetened beverages. Recently the U.S. Senate Finance Committee recommended such a tax to help combat obesity. Although major soft drink corporations vehemently oppose such a tax, the proposal is now on the national agenda.

Cornell University researcher Brian Wansink and his colleagues have found that cues in our personal eating environment also exert pressure on our tendencies to overeat. Based on these findings, they have suggested various ways of altering our environment to influence us to eat less. They advise, for instance, reducing portion sizes, keeping tempting food out of sight, never eating directly out of a package, and asking waiters to remove the chips or bread from the table.

Analyzing the power of environmental influences on obesity can lead to many practical suggestions for lessening their detrimental effects and encouraging lifelong healthy eating. And because obesity is a serious problem that has managed to spread to many corners of the globe, we must explore every possible avenue to reduce its prevalence.

Conspicuous Consumption
Studies show that our surroundings greatly influence how much and what we eat. In his book Mindless Eating: Why We Eat More Than We Think (Bantam Dell, 2007), Brian Wansink, professor of consumer behavior and nutritional science at Cornell University, describes the environmental stimuli that numerous investigations have tied to overeating. Here are some of them:

  • The larger the amount of food on a plate, the more we eat.
  • The bigger the food container, the more we eat.
  • When the food we prepare comes in large packages, we prepare and eat more than if the food comes in smaller packages.
  • We eat more when the food is visible and conveniently located.
  • We eat more when the food has an appealing name (such as Succulent Italian Seafood Filet) than when the same food has an ordinary name (such as Seafood Filet).
  • Schoolchildren who live close to fast food outlets have a 5 percent higher obesity rate than do students who attend schools farther away from such stores.
  • People who move from less modernized countries to more modernized ones show increased rates of obesity as compared with individuals who stay in their less modernized country.

Note: This article was originally printed with the title, "Environment and Weight."


Buy This Issue
If your institution has site license access, enter here.

ABOUT THE AUTHOR(S)

HAL ARKOWITZ and SCOTT O. LILIENFELD serve on the board of advisers for Scientific American Mind. Arkowitz is a psychology professor at the University of Arizona, and Lilienfeld is a psychology professor at Emory University. The authors thank Kelly D. Brownell of Yale University for his invaluable help with this column.


14 Comments

Add Comment
View
  1. 1. amjad hussain shah 03:29 AM 9/26/09

    sir, i am Muslim and Pakistani,i want to increase my body weight i am married and having one child.i am 37 years old and my body weight is 52 KG.i never use any medicine to increase my body weight please suggest some medicine and also diet ,so that i can increase my body weight

    Reply | Report Abuse | Link to this
  2. 2. rgrace14 12:18 PM 9/30/09

    Read Michael Pollan's "In Defense of Food" ...it isn't our environment, unless you count "the western diet" an environment. Processed food diets of all types lead to obesity, diabetes, and high blood pressure. Unless you're eating mostly food your great grandmother would recognize as "food" (forget chips, tv dinners, and taco bell), you can count on health problems, simple as that.

    Reply | Report Abuse | Link to this
  3. 3. Soccerdad 12:31 PM 9/30/09

    It seems to me that people become overweight by swallowing too much aggression - along with a lot of pizza.

    Reply | Report Abuse | Link to this
  4. 4. Bill Case 12:59 PM 9/30/09

    I am with Shakespeare on this issue "First I would kill all the lawyers". However, I would add nutritionists and physical trainers to the list.

    I come from a family of fit naturally sized people and so does my wife. Having a slight tendency to hyperthyroidism in the family helps keep the weight down admittedly. However the 7 bullet points at the end of the article seem to be the most important part. I live by some attentional points that are contrary to most of what is taught for weight control.

    Eat less; do more is the golden rule. In real life that means;

    * Don't eat breakfast; it only makes you starving by noon.
    * If you need a snack have a big one to get rid of the hunger pangs for several hours.
    * Talk, argue, debate during a meal. You will enjoy yourself and your companions more. It forces you to chew more and lets the food settle in your stomach allowing a feeling of fullness to develop while your are in the midst of verbal forays.
    * Waste food. You have already paid for it. It makes no difference to your pocketbook whether the food goes into the trash or your stomach.
    * Don't feel guilty. Eating your food won't help the starving kids in Africa.
    * Don't exercise. It's boring, strenuous and can't be sustained. Instead live on impulse. If you forgot something upstairs, go get it. Don't make a planned trip out of it; go up and down three different times if you have to because you keep forgetting to do something.
    * Park at the back of the parking lot; not to force a walk but because it saves on car door dings and is easier to find the car.
    * Walk to the corner store. Walking is the easiest most natural activity. And besides, distances progressively shorten each time you walk a route.
    Sometimes you can even sneak in a treat without anybody else in the family knowing.
    * Ignore advice about what is a proper diet. It will probably change tomorrow.
    * Pay particular attention to the three major food groups; sugar, salt and fat. Put them up front on your food where you can enjoy them; don't hide them inside the preparation of the meal.
    * Listen to your body. It tells you what and when you need something -- even treats.

    Be natural; enjoy life.

    Reply | Report Abuse | Link to this
  5. 5. lvnbobby 04:23 PM 9/30/09

    A-HAHA ok Bill Case.... that is the funniest thing I have ever read and I am not entirely sure that was your intention.

    I am thin and so is most of my family. We eat what we want and for the most part dont think about it. We are all pretty active, I work out everyday, I LOVE running with my fiance (find something you like to do and dont do something just because you feel you have to).

    I am telling you people think way to much about food ALL DAY LONG. weather its what they shouldnt be eating or what they should be eating.....its kinda gross to me. I hear people ALL day long talking about what they are having at dinner (mean while its 10AM), talk about what new diet they are on, talk about how they are going to "try" and start a work out routine. They ask me my advise on what I do. I have no problem advising people (even though I am not a doctor) but as soon as I mention working out I get rolled eyes or them saying "ugh I dont have time for that".

    I think a lot of people (in my non-expert) opinion are not happy with what they are doing, whats going on in their lives or something else. I dont think that is an excuse to eat but just what people tell me and what I see. I think if more people focused on the positive and stop seeing EVERYTHING as a downer it would fall into place.

    I agree with you.....enjoy life......you never know when it (or someone important to you) will be taken away.

    PS....I never eat breakfast. I will be starving in 2 hours if I do that.

    Reply | Report Abuse | Link to this
  6. 6. Bill Case 04:55 PM 9/30/09

    Hi Ivanbobby ... Well, the words were certainly chosen with a tongue firmly planted in one cheek. On the other hand, I do hope I got another 'healthful' perspective into the discussion with some titbits, or crumbs of truth. I could have said the same things with a much more sour attitude.

    A correction:
    * Don't feel guilty. Not eating all your food won't hurt the starving kids in Africa.

    Reply | Report Abuse | Link to this
  7. 7. ecstatist 05:03 PM 9/30/09

    FOOD IS THE MAJOR PREVENTABLE CAUSE OF EARLY DEATH

    (not cigarettes) at least in the USA.

    Do not eat breakfast - early man, after waking up, had to go and look for food before eating it.

    Get rid of your refrigerator, consequence = have to throw away uneaten, prepared food and also no (unnatural) dairy products and frozen food - consequence = walk to the shop more often.

    Do not have quick, over appealing food at home. A person should build up enough hunger so that he will have sufficient incentive to get up and laboriously prepare (cook) food before eating it. This type of food is generally healthy. (vegetables, - and fruit that needs preparation, peeling.

    More natural sex - not modern hidden inhibited "moral" sex.

    Reply | Report Abuse | Link to this
  8. 8. fb36 06:20 PM 9/30/09

    I think all sweet foods in the US have excessive sugar compared to other countries and that is one of the main causes of obesity, not to mention higher diabetes rates.
    FDA must come up w/ a measure of sugar (ratio) in a food and must force it to be labeled in all foods.
    Also it must enforce a lower limit than the current.

    Reply | Report Abuse | Link to this
  9. 9. voiceofreason 08:11 PM 9/30/09

    Epidemic obesity causation is multifactorial. But if only one factor could be identified, it would be the recently adopted practice of imbibing sugar containing beverages for routine hydration. This practice is insane, has no evolutionary antecedent among primates (humming birds are NOT our close relatives), and amounts to a toxic habit like tobacco abuse. The AVERAGE American teenager derives around 14% of his calories from soft drinks. In addition to the feed-forward effects of sugar-load driven insulin production on appetite, studies have shown that liquid calories are underestimated by satiety mechanisms.

    Now as to the ERRONEOUS assertion in the article that genetic change within the population of developed nations can not explain even part of the obesity epidemic, consider this: Epigenetic (DNA methylation) effects may be vertically transmitted, AND it has been shown that mothers experiencing variously food plenty or food deprivation pass a different suite of active genes to their offspring. That's right, fat moms may pass activated quick weight gain genes to little (soon to be big) Johnny, and thin moms may pass a genetic suite adapted to parsimonious resource use. Patterns of DNA methylation once made are life long.

    Reply | Report Abuse | Link to this
  10. 10. gargoylefun 11:39 PM 9/30/09

    no one ever points out that it is cheaper to eat badly. If the foods that are better for you were less expensive, then that is what we would be eating. Instead it is easier and cheaper to eat fast food, packaged and processed foods. So taxing junk food might actually work, that would make those items more expensive than foods that are better for you.

    Reply | Report Abuse | Link to this
  11. 11. larkalt 06:27 PM 10/1/09

    Fructose is part of the reason why people are fat. From high-fructose corn syrup, from sucrose, from fruit juices etc.
    My diet is very low-fat AND low in fructose (from sucrose and free fructose). I get most of my calories from starches. It doesn't make me want to overeat at all. It's about the most filling diet for the calories that you can have.

    Reply | Report Abuse | Link to this
  12. 12. kellyaf30 09:33 PM 10/2/09

    Obesity. Storing consumed calories instead of burning them. That's the simple part. The complexity is a sum of the variabilities in food intake, food content, absorption efficiency (inc. gut flora), addictive mindset/genes (?), energy spent, and of course, social and advertising influences. These things combined (reduced to nature AND nurture) make it difficult to subscribe a diet/lifestyle that is generalizable. Dieting methods for weight-loss that for some people doesn't for everybody and may require a totally different strategy than simple maintanence, particularly among those who are "(epi)genetically predisposed." As a thin person myself, I would have to disagree with the much of the advice given by a few who admit they are thin, as a result of either genetics/lifestyle. Part of the problem with dealing with obesity is the long and contradicting lists of Dos and Don'ts. Eat breakfast. Don't eat breakfast. Eat low fat. Eat high fat, higher the unsaturated the better. Eat fat-free snack packs. Eat fresh food only. Sleep less. Sleep more. Snack more. Snack less. Use sugar substitutes. Don't use sugar substitutes. I'll stop now. I think the most sound advice against which there is no argument is to Listen To Your Body. If you can't hear what your body is saying, exercise will get it talking. And we care so much about fat people brett, because thin people have problems too; and our economy thrives on helping each other mend our flaws. We also care because like it or not, fat people effect us and We don't deserve many of those consequences (ranging from health care costs to discomfort in a plane seat.)

    Reply | Report Abuse | Link to this
  13. 13. Nik 12:19 AM 10/3/09

    Its not so much about working out more and eating less, its about establishing a routine and eating at appropriate times.
    Breakfast is the most important meal of the day, regardless if we are hungry two hours later, it gets our bodies ready to go, and of course you need to keep on fueling up.
    On the matter of meals, no one has it more right than the europeans. Eat a large breakfast, a snack, then a medium size lunch, another brisque snack and then a relatively light dinner, to begin the fast over the night (remember breakfast= breaking your fast) your body has gone without any fuel now for several hours and needs that morning meal to function properly.
    It can be as simple as porridge with berries and nuts, a breakfast with protiens and carbohydrates is best, your snacks should contain fruit/vegitables and if you like dairy, cheese! Dinner all depends on your energy levels, carbs, protiens and the portiion size.

    The national health association, as well as the Canadian Food guide, both recommend a mere hour to half hour of vigouris excersise a day, which can be a walk, bike ride or even gardening for beginners, or dancing and swimming.

    I have a family history of obesity, and with a mesomorphic body type, I have to be very concious of my diet and activity level or I can gain weight super fast without noticing it. Suddenly my jeans are too tigh... To manage my problem, I've begun going to school to become a yoga instructor and fitness trainer.
    Educating yourself about health and wellness is much easier than most would think. Instead of watching mindless TV, pop in an educational video (they're out there) take up a night course or read a book. When you're done... go for a stroll.

    If you arent getting enough from your diet, take a daily multivitamin.
    And remember, always read the food labels! The less processed crap the better!

    Reply | Report Abuse | Link to this
  14. 14. freakyguy6190 02:30 AM 10/3/09

    To "fb36"

    Why would FDA would do anything, they are too busy counting the money which they get to pass the dangerous, so called medicines.

    Reply | Report Abuse | Link to this
Leave this field empty

Add a Comment

You must sign in or register as a ScientificAmerican.com member to submit a comment.
Click one of the buttons below to register using an existing Social Account.

More from Scientific American

Follow Us:

See what we're tweeting about

Scientific American MIND

More »

Free Newsletters


Get the best from Scientific American in your inbox

Solve Innovation Challenges

Powered By: Innocentive

  SA Digital

Latest from SA Blog Network

  SA Digital

Science Jobs of the Week

Email this Article

The Effect of Our Surroundings on Body Weight: Scientific American Mind

X
Scientific American Mind

Subscribe Today

Save 66% off the cover price and get a free gift!

Learn More >>

X

Please Log In

Forgot: Password

X

Account Linking

Welcome, . Do you have an existing ScientificAmerican.com account?

Yes, please link my existing account with for quick, secure access.



Forgot Password?

No, I would like to create a new account with my profile information.

Create Account
X

Report Abuse

Are you sure?

X

Institutional Access

It has been identified that the institution you are trying to access this article from has institutional site license access to Scientific American on nature.com. To access this article in its entirety through site license access, click below.

Site license access
X

Error

X

Share this Article

X