Q&A with Nutrisystem CEO Dawn M. Zier

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How Nutrisystem lost flab and got into fighting shape
In the weight-loss business, where shedding pounds has become more technology-driven with apps and other devices to monitor food intake, Dawn Zier seems right at home at Fort Washington-based Nutrisystem, a brand enjoying a resurgence under her leadership. Going into retail for the first time was a risk, but Zier says she knew Nutrisystem had to strike out in a promising new direction. Download Download video in p quality I've tried Jenny Craig. Nutrisystem's online focus is evident: I've tried Weight Watchers.

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Nutrisystem Fast 5+ TV Commercial, 'Be Healthy' Feat. Marie Osmond & Dawn Zier

A few quality studies have been carried out over the years, starting in 1998 with a double-blind, placebo-controlled trial of 135 adults over 12 weeks published in The Journal of the American Medical Association. They found no evidence that hydroxycitric acid, the active ingredient in weight loss products made from garcinia cambogia, produced significant weight loss. The American Journal of Clinical Nutrition in 2004 published a systematic review of meta-analyses and clinical trials on dietary supplements for weight loss by complementary medicine researchers at the Universities of Exeter and Plymouth.

None of the over-the-counter weight loss aids worked, including garcinia cambogia. Late in 2010 the peer-reviewed Journal of Obesity published a meta-analysis of studies testing the garcinia as a weight loss aid.

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