The hCG Diet Myth: Why Would a Pregnancy Hormone Make You Skinny?

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Short for human chorionic gonadotrophin, hCG is the hormone secreted by the embryo that makes a pregnancy test positive. Since the 1950s, certain doctors have promoted hCG injections as the key to hunger-free weight loss — and now, the diet is taking off on the Web. This, despite 14 clinical trials showing that hCG has no effect on weight.

Further Reading:
http://healthland.time.com/2011/02/25/debunking-the-hcg-diet-myth-why-would-a-pregnancy-hormone-make-you-skinny/