A randomized double-blind crossover study of the antiobesity effects of etiocholanedione.

Etiocholanedione (ED), a natural metabolite of dehydroepiandrosterone, has antiobesity effects in animals when given orally and is nontoxic. We carried out a trial of oral ED in obese humans. In a 20-week randomized double-blind crossover study, 14 subjects lost significantly more weight and body fat during treatment with oral ED, 4 gm daily, than during placebo administration. Mean weight loss during ED administration was 2.8 +/- 5.5 kilograms, which was equivalent to 0.53 +/- 0.91 kilograms per week per 100 kilograms of body fat; mean weight change during placebo administration was essentially zero: +0.21 +/- 4.2 kg, or +0.04 +/- 0.74 kg/wk/100 kg body fat. The difference between the weight changes in the two periods was significant: for delta kg, P < 0.05; for delta kg/wk/100 kg body fat, P < 0.03. Densitometric measurement of body fat content showed that the mean weight loss coincided almost exactly with the mean decrease in fat content; thus, over the 10-week period of ED administration, the mean fat loss was about 5% of the initial body fat content. Three of the obese subjects had strikingly greater fat loss, about 18%, 19%, and 25% of the initial body fat content. There were no significant subjective or objective side effects of ED administration.