She initially lost even more weight than the program called for - a good thing, she says, because she was a bit overweight after her first pregnancy. The loss put her in better shape for a second pregnancy (during which she took a break from the study). Tamarra Crawford, 37, a psychologist from Sheridan, Wyoming, was among those who tried large changes. One, dubbed “small changes,” asks people - regardless of their starting weight - to shave 100 calories off their diets and burn an extra 100 calories through activity each day. These are the people who end up having high blood pressure and diabetes and having the most heart attacks and strokes.”īut there might be some fairly simple things people can do to prevent all that. In an ongoing study of nearly 500 normal-weight and overweight (but not obese) people enrolled at ages 18 to 35, Tate and Wing are testing two promising strategies. “Those who gain the most rapidly end up being the most obese, with all the associated pathologies. “The rate at which you gain weight in the period between 18 and 40 is the major determinant of obesity,” says David Levitsky, a professor of nutrition at Cornell University. Stopping or slowing those gradual gains might be the best hope for controlling the obesity epidemic, Tate, Wing and other researchers say. The result, Tate says, is a daily “energy gap” - the difference between calories burned and calories consumed - that slowly adds up.
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