Provided is a novel testosterone secretagogue. A testosterone secretagogue according to the present invention contains a powder or extract of Paecilomyces tenuipes. This testosterone secretagogue promotes the secretion of testosterone and can cause an increase in a testosterone level, the maintenance of a testosterone level, and the like. A testosterone secretagogue according to the present invention is preferably in the form of a food and drink composition, a nutritional supplementary food composition, or a food additive.

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