Here's (sort of) an affirmation of Low-Glycemic (Zone).
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From Men's health:
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You’ve lost weight, but will you keep it off? A low-glycemic-index diet may work better than others at burning calories and helping people ward off those pesky Lbs, reports a new study in the Journal of the American Medical Association.
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In the study, researchers had 21 people who’d lost 10 to 15 percent of their body weight try three different diets, each for 4 weeks. The diets consisted of a low-fat, a low-carbohydrate, and a low-glycemic-index—which endorses carbohydrates that keep blood sugar levels low—eating program.
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The result: Even though the participants ate the same amount of calories on each of the plans, they burned an average of 300 fewer calories per day on the low-fat diet compared to the low-carb option.
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But the low-carb diet wasn’t a win-win alternative, either. Although it was better at encouraging calorie burn, it also caused the greatest increases in cortisol and C-reactive protein levels—both of which may elevate heart disease risk—among the study participants.
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The low-glycemic-index diet, however, seemed to strike the right balance in terms of heart health and resting metabolism, says study authoer Cara Ebbeling, Ph.D., associate director of the New Balance Foundation Obesity Prevention Center at Boston Children’s Hospital. And any help you can get torching extra calories is beneficial after a big weight loss. That’s because the more weight you lose, the more your metabolism slows, making it increasingly difficult to burn calories, explains Ebbeling.