Disclosed is a method for screening a compound having an activity that selectively modulates an androgen receptor, comprising a step of measuring the mRNA expression level of prostate-specific antigen or the production level of prostate-specific antigen in prostate cancer cells by contacting a test substance with the prostate cancer cells, and a step of measuring the mRNA expression level of uncoupling protein 1 or the production level of uncoupling protein 1 in adipocytes by contacting a test substance with the adipocytes. Additionally disclosed is a selective androgen receptor modulator, comprising as an active ingredient thereof a compound represented by any of structural formulas (I) to (III), and a composition for preventing or treating a lifestyle-related disease, comprising as an active ingredient thereof said selective androgen receptor modulator.
