"The Dr. Oz Show," green coffee bean extract â a supplement created from green (unroasted) coffee beans â was touted as a âfat burner that helps women lose weight.â
Green coffee bean contains caffeine, a stimulant linked to weight loss. It also boasts high levels of chlorogenic acid, a polyphenol antioxidant that researchers speculate may promote weight loss by reducing the absorption of fat and glucose in the gut, and lowering insulin levels to improve metabolic function.
A 2011 review in the journal Gastroenterology Research and Practice found green coffee bean extract to lower body weight more significantly than a placebo in three studies. Although average weight loss âabout 5.5 pounds â was moderate (perhaps because the doses were a modest 180 to 200 mg/day), researchers noted the poor quality of the studies and suggested more research before recommending the extract for weight loss