Green coffee bean extracts are often dismissed as simply a source of caffeine, but their weight loss potential is boosted by the presence of powerful, antioxidant polyphenols known as chlorogenic acids (CGAs). These increase your metabolic rate, stimulate fat breakdown, and enhance fat burning through interactions with genes present in both the nucleus and energy factories (mitochondria) of your cells.
CGAs also reduce glucose absorption in the small intestine and the release of glucose from the liver. These improvements in glucose regulation, together with effects on the release of gut hormones involved in satiety, help to suppress hunger and may reduce the risk of type 2 diabetes.
Unfortunately, green coffee bean extracts gained a bad reputation when one manufacturer-funded study showed extraordinary reductions in body weight (8kg in 22 weeks) was retracted following allegations of data falsification. Leaving that study aside, most of the research investigating the effects of coffee on metabolism and weight loss are small, but show promising results.
