The purpose of this study was to investigate the effects of a 3-month weight loss program and garcinia extract (HCA) ingestion on visceral fat accumulation and aerobic capacity in young women. Forty-one young women, aged 19.6±0.5 years, who had not exercised regularly, volunteered to participate in the present study as subjects. They completed a 3-month weight loss program consisting of swimming exercise performed three times/week, for 60 min/session at lactate threshold level. For the period, they had a regularly energy intake, i.e., 1,980 kcal/day. The visceral fat area (VFA) and subcutaneous fat area (SFA) were estimated at the umbilicus by the computed tomography. VFA and SFA were decreased by swimming exercise, HCA ingestion alone or exercise + HCA ingestion, but not significant in HCA ingestion alone. It was concluded that the 3-month swimming exercise was effective for the reduction in VFA and SFA., and suggesting that HCA ingestion also decreased the body fat by independent on exercise effect in young women.