The Garcinia fruit rind is believed to interfere with lipogenesis (fat production). The active ingredient in this supplement, HCA, is believed to assist with weight management by inhibiting certain enzymes involved in the lipogenesis process. This natural weight loss supplement is perfect for summer slimming. Sfera Garcinia Cambogia is a natural herbal appetite suppressant and fat-fighter, which helps to curb troublesome cravings while giving the metabolism an extra boost. Weight loss studies showed results to confirm that HCA reduces body weight and BMI, suppresses appetite, improves blood lipid profiles, and increases serum leptin and serotonin levels and increases fat oxidation more than placebo.