So, how long does Nutrisystem take to work? We will be reviewing your account and reaching out soon. He believed me this time and even made a choice to diet with me. How do I know I can trust these reviews about Nutrisystem? The underlying premise is that controlling blood sugar levels leads to weight loss. I'm also a workaholic which means that previous diets I tried had, what I feel was, a significant impact on my lifestyle.
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Studies that claim to have found weight loss were carried out on animals. Studies involving humans are for the most part badly designed. 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.