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The Light Might Make You Heavy

Rambo Tribble writes: "Writing in the American Journal of Epidemiology, researchers have found that sleeping with high ambient light levels may contribute to obesity (abstract). In a survey of 113,000 women, a high correlation was found between higher bedroom light levels and increased propensity to be overweight or obese. Excess light in the sleeping environment has long been known to adversely affect melatonin production and circadian rhythms. It is posited that such an interference with the 'body clock' may be behind these results. Although there is not yet enough evidence to call this a smoking gun, as one researcher put it, 'Overall this study points to the importance of darkness.'"

17 of 138 comments (clear)

  1. Just look at Anakin by physicsphairy · · Score: 5, Funny

    Anakin Skywalker spent a lot of time with the dark side and look how much body mass he was able to lose.

    1. Re:Just look at Anakin by aevan · · Score: 2

      So the argument could be made it wasn't the darkside, but high-intensity light therapy that caused the sudden weight loss?

  2. Re:Or maybe, you know... by Mr+D+from+63 · · Score: 4, Interesting

    The most obvious correlation to me would be......If you don't get a good night's sleep, then you are less likely to exercise during the day.

  3. the obesity smoking gun by teslabox · · Score: 2

    Sixty-or-so years ago the Vegetable Oil industry told us that butter was giving us heart attacks, that we should avoid as much fat as possible, and that if we had to use fat in our cooking, polyunsaturated vegetable oil was far superior to the saturated fats.

    Recently an article was published in one of those medical journals, waving the white flag of surrender in the war against butter, but it's going to take a generation or two before the product liability lawsuits against Big Food will get anywhere.

    http://www.swindledandpimped.o... - The seed oil scam is the swindle...

    1. Re:the obesity smoking gun by war4peace · · Score: 2

      Bullshit. This is not valid for everyone. I guzzle fat stuff all day long. Butter, lard, fat milk, fat cheese, fat meat, fat fish, you name it. Doesn't affect my weight. 141 pounds and 6 feet tall, and on top of that I don't even exercise a lot. I walk about 2 miles a day on average, because I don't own a car, but I also sit in front of a computer 12 hours a day.

      Same for my wife, but she walks even less on average, and throughout both her pregnancies she gained 20 pounds tops.

      Our "problem" is that we can't gain weight. Well, not really something that preoccupies us, just sayin'. Could be that we eat organic food as much as possible, we avoid food additives like the plague, don't know. Fact of the matter is I was stable at 141 pounds (+/-2) for the last 20 years.

      --
      ...gis sdrawkcab (usually not responding to ACs; don't bother posting as AC)
    2. Re:the obesity smoking gun by teslabox · · Score: 2

      It's simple math. Consume less than you burn.

      This idea is simple, pervasive, and wrong. The body's metabolism responds dynamically to the amount of fuel available, and exhortations to "eat less" are not at all helpful to someone who is trying to lose weight.

      Our bodies are machines.

      Machines require proper fuel, and proper lubricants. Vegetable oil is NOT a proper fuel for warm-blooded bodies. Polyunsaturated vegetable oils suppress the metabolism, shunt carbohydrates to fat production, are not easily burned for energy, and distort the body's hunger signals.

      Using vegetable oil in the human machine is like substituting a random grade of mineral oil for the transmission fluid the manufacturer designed your car to use. Your transmission might work for a while, but I wouldn't expect it to last for long.

  4. Oblig XKCD by Kurast · · Score: 2
  5. Re:Or maybe, you know... by gstoddart · · Score: 3, Funny

    Next up, the new diet craze for lazy people. Blackout blinds.

    It doesn't work, but I do get a better sleep. ;-)

    --
    Lost at C:>. Found at C.
  6. Re:Stuffing your face makes you heavy by oodaloop · · Score: 2

    Yeah. Things seemed simple to me too when I didn't know anything.

    --
    Tic-Tac-Toe, Global Thermonuclear War, and relationships all have the same winning move.
  7. Re:I knew it! It's those damn blue LEDs! by pslytely+psycho · · Score: 4, Funny

    "give me an option to turn them off completely."

    Black nail polish.
    Or black electrical tape if you don't want to permanently black them out.

    --
    Donald Trump, on a crusade to make Nixon look respectable
  8. Re:I knew it! It's those damn blue LEDs! by mythosaz · · Score: 2

    Black electrical tape.
    Black nail polish.

    Both work great.

  9. Re:Or maybe, you know... by AthanasiusKircher · · Score: 5, Insightful

    Yes, because a lack of sleep is the #1 reason why people don't exercise and eat right.

    Give me a break.

    Maybe it's not the #1 reason, but why couldn't it be a significant reason that we might consider?

    People who don't sleep enough or don't get enough "restful" sleep often have all sorts of problems -- increased stress, difficulty in learning and retaining information, impaired judgment -- and it's correlated with all sorts of things from depression to various chronic health problems. If the lack of sleep itself can't lead to obesity, surely some set of these factors (some of which are known to correlate with obesity, like stress and depression) can contribute to it.

    Next up, the new diet craze for lazy people. Blackout blinds.

    I get you don't think this is useful, but why do you have to make stupid remarks? Obviously obesity rates have been rising significantly in the past few decades. There are a number of fairly obvious likely causes for this trend, but there may be many minor ones that have changed in recent decades that could be contributing -- like, for example, the amount of "light pollution" these days, which probably contributes to ambient light in bedrooms (along with decreased numbers of people in rural areas where light pollution is scarce), coupled with increased tendencies to leave various electronic devices on all the time.

    Who cares if it's the "#1 reason why people don't exercise and eat right"? If it's in the top 20, it can probably be helpful to know it, and for some people, it could actually be leading to other health problems, including obesity.

    I know there's this common assumption that diet and exercise is only about willpower, but the reality of life is that there are all sorts of psychological and physical factors which can make it easier or harder to pursue healthy habits. And being exhausted a lot of the time is not generally conducive to such habits. Obviously for many people blackout blinds are not the magic ticket to a thin body -- but combined with some other things, better rest could make it easier for some people to live in a more healthy manner.

  10. eh, not so sure by argStyopa · · Score: 4, Insightful

    This seems like a confusion of symptom and actual cause, when the root issue may be simply a lack of good sleep (for whatever reason).

    Our eyelids are not opaque, they definitely allow ambient light levels through. This would imply that perhaps sleeping with high ambient light, it's just harder to get good solid rest.
    I guess you could test this by checking brainwaves of people sleeping in the dark, and sleeping with bright lights on, and seeing if there's a difference in the 'depth' of sleep they reach.

    --
    -Styopa
  11. Re:Questionable at best by AthanasiusKircher · · Score: 5, Informative

    This article makes an overly simplistic suggestion that sleeping in a darker room will magically help one shed weight.

    [Citation needed]

    I read TFA and the the abstract to the actual study, and at no point do I see a "suggestion that sleeping in a darker room will magically help one shed weight."

    To the contrary, from TFA: "[The researchers] caution there is not enough evidence to advise people to buy thicker curtains or turn off lights." AND "[T]here is not sufficient evidence to know if making your room darker would make any difference to your weight." AND " Dr Matthew Lam, from the charity, commented: 'It's too early to suggest that sleeping in the dark will help prevent obesity, a known risk factor for breast cancer, but the association is certainly interesting.' "

    About the closest TFA comes to what you said is: "Prof Derk-Jan Dijk, from the Surrey Sleep Centre, said there would be no harm in trying to make bedrooms darker."

    In other words, TFA includes at least THREE explicit disclaimers saying the exact opposite of what you said it suggested, and one suggestion that "Well, it probably wouldn't hurt..."

    As someone that has lost over a hundred pounds, I'll tell you this: it is making good food choices, counting calories, and getting physical activity.

    Of course. But if you are better rested, for example, there's less chance that fatigue will live to poor judgment, stress, depression, etc., all of which are known to contribute to obesity. Sure, ultimately what you say is true, but that doesn't mean that changing some other environmental factor might not make it easier to make good food choices, count calories, exercise, etc.

    Certainly adequate rest is helpful but there is no credible study to suggest that someone that is doing these things yet doesn't get enough sleep is obese.

    Well, if you actually read the linked abstract, you'd see there actually ARE animal studies suggesting precisely this in the second sentence: "In animal studies, there is convincing evidence that light exposure causes weight gain, even when calorie intake and physical activity are held constant."

    So, this study is a human study suggesting something that has already been found in animal studies. As the researchers point out, they controlled for a lot of confounding factors, but there might be others -- nevertheless, as they say, it seems like enough evidence to justify further research.

    As you say, "The causes of obesity are a multitude of factors" -- why do you insist on arguing so strenuously against the possibility that this might be one factor, even if a minor one?

  12. Re:Poverty and city living. by Anonymous Coward · · Score: 3, Interesting

    $50? What are you, rich??
    very, but hardly my point...

    $20/week is enough to buy fresh food.
    For 1 person. Oh and remember the closest store is about 15 miles down the road. As you can not afford to live in the city.

    For a family of 4 you can get 500 a month in food stamps if you are under a particular income level.

    With a well stocked larder of cheap staples, grains, rice, beans,

    You are well prepared and thought it thru. Most people have 0 clue what they are buying and look strictly at the convenience of pre-preped food. Presold to them on the TV. You are also eating a mostly vegan diet. Most people do not want that. They could eat better if they did, but they will not change.

    I knew by putting a price point I would draw someone like you out. You seem to think that because you have an excellent plan it works for everyone. I know *many* families who live hand to mouth, and used to be there myself. I teach them how to do better. But rarely can they take my advice. Because it is not always good practical advice. Say... you just pulled a double shift at below min wage (not enough tips tonight) at the local diner and your kids are hungry. Do you spend the next 40 mins cooking something or pop something in the microwave and crash out on the couch and try to get 6-7 hours sleep before the next shift? Oh and you have no time to pre-prep it because its saturday and you have to trek the 2 kids across town to the ex who wont pick them up and have to be at work by 4 and you are doing double shifts for the next week. Rinse and repeat for 18-20 years.

    I am glad you found a way to eat cheap. There are plenty of ways to do so. But at the big box stores like walmart (where the majority of 'poor' people shop) you do not get the high quality you need. They want to sell you cheap preprocessed box dinners. I know walmart is the place for 'the poor' to shop. I had to look no further than when congress cut food stamps a few months ago. Walmart had one of the first declines in revenue in 20 years. I shopped there every week when I had little money too.

    You know the saying time is money? You trade time for money and money for time. People do the same by buying preprocessed food. They trade a bit of money to get time. When you are poor you have less of both. Time is usually the more important one. You almost always end up overpaying to buy time especially when you are poor as you over pay when you can least afford it but need it the most.

  13. Re:Poverty and city living. by pnutjam · · Score: 2

    Cheese, meat, fish, nuts, fruit, vegetables
    these are the healthy foods people are talking about. These are expensive and difficult to keep fresh or carry around if you have to walk or take the bus.

    strawman argument is made of straw..

  14. Discovery solves a related mystery by idontgno · · Score: 3, Funny

    This breakthrough finding also explains why photography adds 10 pounds to its subjects. Flash photography, probably even more.

    --
    Welcome to the Panopticon. Used to be a prison, now it's your home.