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Home / MCNTalk / A Mathematical Challenge to Obesity

June 28, 2012

A Mathematical Challenge to Obesity

From The New York Times, in a conversation with Carson Chow, an investigator at the National Institute of Diabetes and Digestive and Kidney Diseases:
Question: Did you ever solve the question posed to you when you were first hired — what caused the obesity epidemic?

Answer: “We think so. And it’s something very simple, very obvious, something that few want to hear: The epidemic was caused by the overproduction of food in the United States.”

Beginning in the 1970s, there was a change in national agricultural policy. Instead of the government paying farmers not to engage in full production, as was the practice, they were encouraged to grow as much food as they could. At the same time, technological changes and the “green revolution” made our farms much more productive. The price of food plummeted, while the number of calories available to the average American grew by about 1,000 a day.

Chow has a number of other interesting, practical comments:

  • The conventional wisdom of 3,500 calories less is what it takes to lose a pound of weight is wrong. The body changes as you lose. Interestingly, we also found that the fatter you get, the easier it is to gain weight. An extra 10 calories a day puts more weight onto an obese person than on a thinner one.
  • Also, there’s a time constant that’s an important factor in weight loss. That’s because if you reduce your caloric intake, after a while, your body reaches equilibrium. It actually takes about three years for a dieter to reach their new “steady state.” Our model predicts that if you eat 100 calories fewer a day, in three years you will, on average, lose 10 pounds — if you don’t cheat.
  • Another finding: Huge variations in your daily food intake will not cause variations in weight, as long as your average food intake over a year is about the same. This is because a person’s body will respond slowly to the food intake. Read more…
47.608945-122.332015

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Tagged: Lifestyle and habits 1 Comment

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  1. Allen Paulk says

    July 9, 2012 at 4:48 am

    Obesity is really one of the health problems which plaque our society these days, It is easily treatable by being more physical and of course by having a nutritious diet. *;.;’

    Reply

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