Masturbation frequency and sexual function domains are associated with serum reproductive hormone levels across the menopausal transition.
Randolph JF, Zheng H, Avis NE, Greendale GA, Harlow SD. Masturbation frequency and sexual function domains are associated with serum reproductive hormone levels across the menopausal transition. J Clin Endocrinol Metab. 2015 Jan; 100(1):258-66.