The purported fat-mobilizing properties of hydroxycitric acid were evaluated by computing the slope of change in fat mass vs change in body weight for the 2 treatment groups. Assuming approximately a zero intercept for this relation, the anticipated regression line slopes should approach 0.7 to 0.8, the generally
acknowledged fraction of weight loss as fat mass in obesity trials.26 Promotion of
fat mass loss by active hydroxycitric acid would be associated with an increased
fraction of weight loss as fat mass.