Obesity Epidemic: Supersized Nation Still Rules (cont.)
The low-carb craze, many say, is fading fast.
Lessons Learned From Low-Carb Craze
"The best thing about 'low-carb consciousness' is that people have learned about smart carbs," Zelman tells WebMD. "There's very little nutritional value in simple low-carb items like sodas, white breads, and pastas. In a healthy diet, those are the extras, not the essentials -- fruits and vegetables, which are loaded with vitamins, minerals, antioxidants, and disease-prevention substances.
"You can lose weight any number of ways -- taking drugs or [by trying] any bizarre fad diet," she says. "But true weight loss is about making behavior changes that caused you to gain weight in the first place. It's about sustainability. You can't stay with the Atkins, low-carb lifestyle forever."
Skimping on food just isn't the answer, research is showing. A moderate-fat diet -- plus getting an hour of exercise daily -- that's what works best. In fact, the amount of carbs doesn't even matter, according to a 10-year study involving 2,700 members of the National Weight Control Registry.
The registry includes only people who have shed 30 pounds or more and kept it off. This year, the USDA used this database to develop the 2005 food pyramid guide.
"No body of evidence is more compelling than those in the National Weight Control Registry," Zelman tells WebMD. "It shows the magic bullet that's working for people who have lost weight and kept it off."
Exercise is that magic bullet, says registry director James O. Hill, PhD, director of the Center for Human Nutrition at the University of Colorado Health Science Center at Denver.
In his study, Hill analyzed eating patterns and lifestyle habits for registry members in 1995 and in 2003. He found striking differences:
What works for successful, long-term weight loss? Based on data in Hill's registry, this pattern emerges:
With the low-carb South Beach and Atkins diets, physical activity doesn't get mentioned, Hill notes. "But without exercise, it's harder to keep weight off."