"This guy has a few tails, at least two," Dr. Allison Rodgers, a reproductive endocrinology infertility specialist at Fertility Centers of Illinois, remarks in one video, viewed over 23 million times.

Annalisa (Nalis) Merelli is a contributing writer at STAT focused on boys’ and men’s health. In his 1694 review of magnifying lens technology, “Essai de Dioptrique,” Dutch naturalist Nicolas ...

Have you ever felt confused when infertility continues even though a semen analysis comes back normal? For many couples, this can be frustrating and emotionally difficult. Standard tests check sperm ...