Small study says green coffee bean extract aids weight loss . The FTC says lead researcher altered the results . Study authors retract the diet pill study , saying sponsors ca n't assure validity of data . Comment:
Small study says green coffee bean extract aids weight loss . The FTC says lead researcher altered the results . Study authors retract the diet pill study , saying sponsors ca n't assure validity of data . Dr. Oz has promoted diet pills with green coffee bean extract on his show .