That's the message from a two-year National Institutes of Health-funded study that assigned 811 overweight people to one of four reduced-calorie diets and found that all trimmed pounds just the same. It didn't matter what foods participants ate, but rather how many calories they consumed.
An intense debate has long raged over which dieting regimen is best. Low carb? High protein? Low fat? But the federal study, one of the longest of its kind, "really goes against the idea that certain foods are the key to weight loss," says Frank Sacks, principal investigator and a professor of cardiovascular-disease prevention at Harvard School of Public Health. "This is a pretty positive message. It gives people a lot of choices to find a diet they can stick with."
The study, published in the New England Journal of Medicine, put participants on one of four diets: Two were low fat and two were high fat, and each of these included either a high-protein or an average-protein component. Carbohydrate intake ranged from 35% to 65%. All the diets were low in calories and saturated fat, and high in fiber, and participants were asked to exercise a fixed 90 minutes a week.
In the study, doctors calculated each participant's energy needs, and structured a diet that had 750 fewer calories than would be necessary to fuel his or her activity. Typical diets in the study had between 1,400 and 2,000 calories a day.
Rudy Termini, a retiree in Cambridge, Mass., says that before joining the study, he downed about 2,400 calories a day. If he dined on T-bone steak, he'd make it a one-pounder. "I just didn't need all that food," says the 69-year-old and former owner of a telecommunications company.
Mr. Termini, who is 5 feet 11 inches tall, says he dropped to 175 pounds from 195 pounds and lost his "little pot belly" by limiting himself to 1,800 calories a day. He followed the study's higher-fat, average-protein diet (40% fat, 15% protein, and 45% carbohydrates). For fats, he ate avocado, nuts and other sources of unsaturated fat. Mr. Termini says he stuck with the diet because he could eat what he enjoys, but just smaller portions -- his steak choice now is a small fillet. He says he's kept the weight off since the study ended.
The message is that dieting may be "much simpler" than everyone thought, says Catherine Loria, a nutritional epidemiologist at the NIH and co-author of the study. Along with choosing healthful foods, "all you have to do is count your calories."
http://online.wsj.com/article/SB123559955210376029.html
Source: Wall Street Journal, by Jennifer Levitz




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