“…Because good scalps are a sign of health compared with the sparse or brittle hair seen during disease or starvation (Randall, 2008, p. 314), medicine has a long history of concern with baldness. For example, Hippocrates (400 BC) notes that eunuchs do not become bald (Henss, 2001), while the oldest recorded medical prescription (dating back to the Egyptians 5,000 years ago) is for treatment against baldness (Parrotto, 1961, cited in Muscarella & Cunningham, 1996). Today, we know that disposition toward balding is positively correlated with a higher ratio of DHT/testosterone (Knussmann, Christiansen, & Kannmacher, 1992), while baldness itself is associated not with total testosterone but with the amount of testosterone that is not bound to proteins in the blood (i.e., free testosterone; Demark‐Wahnefried et al., 1997).…”