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Science News

Obesity Contagious? 840

An anonymous reader writes "University of Wisconsin-Madison researchers have found that certain human viruses may cause obesity, and by extension make being severely overweight a contagious condition. 'It makes people feel more comfortable to think that obesity stems from lack of control,' the lead researcher says. 'It's a big mental leap to think you can catch obesity.' But other diseases once chalked up to environmental factors, like stomach ulcers, are now known to stem from infectious agents."
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Obesity Contagious?

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  • by andy314159pi ( 787550 ) on Monday January 30, 2006 @04:29PM (#14601102) Journal
    If you read just the blurb posted here, you'll see that the researchers say "it is easier to think of obesity as having something to do with willpower"[paraphrasing.] Most of the comments on this story seem to reflect this, and are just what the researchers predicted you'd say.
    The point is the idea that obesity might not be something that you control really is frightening to us.
  • I don't have time.. (Score:1, Informative)

    by Anonymous Coward on Monday January 30, 2006 @04:39PM (#14601204)
    ..to go into it right now, but anyone get the feeling that science research and reporting are both massive systems that are essentially broken?
  • by Morobishi ( 863488 ) on Monday January 30, 2006 @04:58PM (#14601423)
    There is also a strong correlation between those living on welfare (well below the poverty level) and obsesty. Considering that the cheapest foods are lacking in nutritional benefits, I can see why.
  • by iabervon ( 1971 ) on Monday January 30, 2006 @05:00PM (#14601444) Homepage Journal
    If you eat less than your body requires, by definition, you die. Being able to eat less and lose weight instead of starving while fat depends on the ability to get blood sugar out of fat, which is compromised in people with a number of conditions. It also depends on having a low-calorie source of non-energy nutrients, which is often expensive. It also depends on being able to maintain a reasonable blood sugar level without more energy being taken out as fat.

    For people without a medical condition that causes obesity, it is possible to take in fewer calories and run off of fat instead. But there are a number of medical conditions which can interfere with this process, which depends on a non-trivial cascade of signals between different organs (something has to detect that your blood sugar is low; it has to release a hormone in response; the fat cells have to respond to this hormone; they have to produce sugar from fat; the fat cells have to stop pulling sugar out of the bloodstream and storing the energy). This research found that some people are obese because of a particular virus. Of course, most of the people they looked at probably just eat too much, but not everybody.
  • by Sebastopol ( 189276 ) on Monday January 30, 2006 @05:02PM (#14601477) Homepage
    Crash dieting prevents you from getting the nutrients you need. Even a perfectly balanced 1-meal a day cannot, repeat CAN NOT, deliver the proper nutrients because they absorbed at different rates, requiring 3~5 small meals a day to keep them in your system w/o passing. That's why there's no supervitamin that has everything you need for a day: you'd really need a drip IV to do this.

    Second, you can eat 3,000 kcal a day and still lose weight: exercising uses calories.

    Third, whether or not you experience ill effects from your personal dieting strategy depends on genetic history, such as hypertension, cholesterol, diabetes, etc.
  • by dstewart ( 853530 ) on Monday January 30, 2006 @05:18PM (#14601630)
    It's odd that the idea that a virus can contribute to, or even be a causation of obesity is so poorly received here. Bear in mind that these are experiments on test animals on a controlled diet, not some survey of McDonalds patrons.

    Perhaps because the linked article was a blog...

    Study on rhesus monkeys and marmosets. [nutrition.org]

    "In study 1, we observed spontaneously occurring Ad-36 antibodies in 15 male rhesus monkeys, and a significant longitudinal association of positive antibody status with weight gain and plasma cholesterol lowering during the 18 mo after viral antibody appearance. In study 2, which was a randomized controlled experiment, three male marmosets inoculated with Ad-36 had a threefold body weight gain, a greater fat gain and lower serum cholesterol relative to baseline (P 0.05) than three uninfected controls at 28 wk postinoculation. These studies illustrate that the adiposity-promoting effect of Ad-36 occurs in two nonhuman primate species and demonstrates the usefulness of nonhuman primates for further evaluation of Ad-36-induced adiposity."

  • by JabberWokky ( 19442 ) <slashdot.com@timewarp.org> on Monday January 30, 2006 @05:27PM (#14601728) Homepage Journal
    Atkins (as in the published book) is mostly green leafy vegetables plus lean meats as part of a multi-stage plan toward maintaining weight as a life goal. The street folklore version of Atkins seems to be "eat lots of bacon and get skinny".

    Which one are you discussing?

    --
    Evan

  • Re:Virus or no (Score:3, Informative)

    by pclminion ( 145572 ) on Monday January 30, 2006 @05:38PM (#14601856)
    I'm an atheist, so I don't understand your statment on many fronts. You mention you have this other 'job' to work 'for God'. Aren't you commiting a sin by taking such poor care of the one body you have. What stupid kind of God you think prefers that you work for him before taking care of yourself?

    As an agnostic myself, I don't see why the mere mention of God should trigger you to go into attack mode. The man's religion is not the issue.

    The other thing that bothers me greatly about your post, is the usual socialist statement to make government protect you by using force to make someone else responsible: in your case restaurants and caloric counts, guess what? it doesn't work either: you can still pig out on a triple hamburger and triple fries at 2000 calories a meal if you know how much it's in there...

    Dude, there's socialism and then there's Socialism. The guy isn't exactly quoting Marx, here. Putting a calorie count on a menu helps people make the right decisions. If they don't want to pay attention, that's their own problem. The responsibility is still theirs. If you don't see the value to society in helping overweight people lose their excess weight, you haven't thought hard enough. Ever notice the column on your paystub that says "Social Security?" Ever wished that number could be reduced?

    Personally, I don't feel this is something that should be mandated, because going to restaurants is somewhat of a luxury in my opinion. But the concept is good, and none of this has anything to do with socialism.

    Do you reprint all your menus every time you switch from Brand A (10 calories/serving) to Brand B (11 calories/serving).

    Companies have to do this already with packaged foods. And I think that's a good thing.

  • by Anonymous Coward on Monday January 30, 2006 @06:15PM (#14602269)
    Europeans are just as fat as Americans...
    The International Obesity Task Force estimated [cbsnews.com] that Finland, Germany, Greece, Cyprus, the Czech Republic, Slovakia and Malta have all now exceeded the United States' 67 percent in overweight or obese males.
    ...and...
    Statistics [cdc-cdh.edu] from around the globe shows a rapid increase in the prevalence of obesity the past 10 to 15 years. Obesity is more common in Germany and the United Kingdom compared to the United States. In general, the males are more likely to be overweight than the females, but women comprise the majority of the obese and severely obese. Compared to other countries, Italy has the greatest number of obese and severely obese, followed by Germany. The prevalence of obesity in the United Kingdom is 14.5% and in France, 7%. The Netherlands and Australia have the least obese and severely obese people, but they have about the same (28-32% of population) overweight people as in the United States.
    see also, Google.
  • by Hoknor ( 950280 ) on Monday January 30, 2006 @06:19PM (#14602305)
    The exercise is certainly contributing for them, but monitoring your diet continues to be important despite exercise. For many people, it's easier to have somebody just lay out a set of guidelines that they follow and when they get tired of that particular set of guidelines they move to another one, rather than spending additional time checking labels and portions and working out the equation themselves.
  • by soloport ( 312487 ) on Monday January 30, 2006 @06:28PM (#14602398) Homepage
    When one measures success, or progress, using body weight as a metric, it can be misleading. When I lift weights to shed fat, I can gain more weight the trimmer I look (the muscle weight vs fat factor).
  • by i41Overlord ( 829913 ) on Monday January 30, 2006 @09:01PM (#14603364)
    Your diet is a great way to lose a ton of muscle. I made the mistake of cutting my calories too low and I did lose a lot of weight, but my bodyfat percentage didn't change much. I lost muscle just as fast as I lost fat. I don't know if you lift heavy, but if you do you'll find that you're losing a lot of muscle.
  • by LordRPI ( 583454 ) on Monday January 30, 2006 @09:38PM (#14603556)

    The amount of energy needed to pack on pounds is relatively little on a day to day basis, even less than a hundred calories over our needs per day will eventually cause obesity. There are other endocrine disorders, amongst them Cushing's Syndrome [wikipedia.org] where reduction of caloric intake and excersize may have little impact on weight loss. On a recent episode of Diagnosis Unknown on Discovery Health, one woman who suffered from this condition ate only chicken breasts and broccoli while hitting the gym for several hours a day, continuing to gain weight. This should show that diet and exercise does not always work and the body's other mechanisms may be effected causing fat to be stored even when it should be used for energy.

    This article gives me new reason not to make out with fat chicks.

  • MSG (Score:4, Informative)

    by Mr2001 ( 90979 ) on Monday January 30, 2006 @11:42PM (#14604207) Homepage Journal
    How do you go about making msg? If you had to do it in your kitchen, would you even bother?

    It's not that hard.. glutamate is naturally present in many foods such as parmesan cheese, asparagus, peas, and tomatoes, and monosodium glutamate (MSG) is simply a form of glutamate that's easy to package and cook with. According to Wikipedia [wikipedia.org], MSG was first discovered in crystals left behind after evaporating kombu broth, which is a common Japanese soup stock [seaweed.net] made by heating seaweed in water. Making MSG in your own kitchen is probably easier than making baking soda, sugar, table salt, and many other basic ingredients.

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