The Institute of Physical and Chemical Research

Kotaro Enomoto

Takeshi Shimizu

Tadashi Nakata

Kunio Suzuki

Anti-obesity agents which comprise 3-ketosteroid compounds as an active ingredient are provided. The anti-obesity agents of the present invention have a high anti-obesity effect with little or no side effects and toxicity. Food products which contain anti-obesity agents comprising 3-ketosteroid compounds as an active ingredient, pharmaceutical compositions which comprise 3-ketosteroid compounds as an active ingredient and pharmaceutically acceptable carriers, and methods for preventing and treating obesity which comprise administering an effective amount of a 3-ketosteroid compound to a human are also provided.

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Saitama, Japan

Kotaro Enomoto