What does hydroxycitric acid do?
Preliminary research in the laboratory and in animal research, suggests that HCA may be a useful weight loss aid.1 2 HCA has been demonstrated in the laboratory (but not yet in trials with people) to reduce the conversion of carbohydrates into stored fat by inhibiting certain enzyme processes.3 4Animal research indicates that HCA suppresses appetite and induces weight loss.5 6 7 8 One case report found that eating 1 gram of the fruit containing HCA before each meal resulted in the loss of 1 pound per day.9
A double-blind trial that provided either 1,500 mg of HCA or a placebo per day to 135 overweight men and women, who also were on a calorie-restricted diet, found after 12 weeks that the HCA supplementation did not produce a significant change in weight loss.10 Uncontrolled and/or preliminary evidence from several other human trials suggests the possibility that weight loss might occur;11 however, none of these studies is as methodologically strong as the negative trial previously mentioned. These less-rigorous studies used a similar calorie-restricted diet and a similar amount of HCA as the negative trial. However, the double-blind study used a high-fiber diet not used in the prior studies. It has been suggested that such a diet might limit absorption of HCA.12 Future studies that measure blood levels of HCA (to check whether or not the supplement was absorbed) are necessary to resolve this issue. At the present time, the effectiveness of HCA for weight loss remains unclear and unproven.
Where is hydroxycitric acid found?
HCA has been used in connection with the following conditions (refer to it for complete information):
Who is likely to be deficient of hydroxycitric acid?
How much hydroxycitric acid is usually taken?
Are there any side effects or interactions with hydroxycitric acid?
At the time of writing, there were no well-known drug interactions with Hydroxycitric Acid.