Hydroxycitrate (HCA) is not effective for fat loss or weight loss according to study headed by Steven Heymsfield at St. Luke?s-Roosevelt Hospital in New York. In fact, patients who were given a placebo versus those who were given HCA lost more weight (9 pounds versus 7 pounds, respectively) and lost more body fat (2.2 percent versus 1.4 percent, respectively). However these differences were not statistically significant. Read the entire article | Email this article