This study was designed to investigate the effects of weight control and changes in serum components using a commercial uncooked food diet on 36 obese women over a period of 8 weeks. The subjects had uncooked food (40 g) with milk or soymilk twice a day instead of meals. The mean body weight and height measurements of the subjects at the outset were 69.1 $pm$ 9.3 kg and 159.5 $pm$ 4.4 cm, respectively. Initial daily calorie intake was 103.6 % of RDA, but was significantly lower at 4 and 8 weeks. The subjects showed a significant reduction in weight, body fat mass (p<0.05), anthropo-metric value and skinfold thickness during the experimental period. Hip and upper thigh girth were 102.7 $pm$ 6.4 cm and 61.7 $pm$ 4.3 cm at the outset, and fell to 99.3 $pm$ 5.0 cm and 58.8 $pm$ 4.1 cm after 8 weeks. The most significant reduction was in abdomen skinfold thickness (p < 0.05) , which went from 32.4 $pm$ 8.7 mm at first to 24.2 $pm$ 8.3 mm in after 8 weeks. Serum albumin levels were higher at 4 and 8 weeks than initially but the figures for all of the subjects were within the normal range. Hemoglobin and blood glucose levels were also within the normal range during the experimental period. Initial serum triglyceride level was 110.5 $pm$ 49.5 mg/dl but fell to 93.2 $pm$ 48.5 mg/dl after 8 weeks. Our results show that uncooked foods are effective in the diet therapy of obese women.