Puberty usually begins between the ages of 8-14 (it’s just he beginning). Some develop later. The Talmud says that we can determine if someone is an “adult” by witnessing two pubic hairs. Usually 12 for girls and 13 for boys. But what if they are late bloomers? On today’s daf the rabbis encounter men who haven’t seemed to go through puberty yet . . .at 20!
The Gemara asks: And if he did not develop the signs of a sexually underdeveloped man, until when is he considered a minor if he does not develop two pubic hairs? Rabbi Ḥiyya teaches in a baraita: He is considered a minor until most of his years have elapsed, i.e., until he is thirty-five years old. When the case of one who had not developed pubic hair would come before Rabbi Ḥiyya, he would offer the following advice: If the person was thin, he would say to those appearing in court: Cause him to become fat, and if he was fat, he would say to them: Cause him to become thin. This is because these signs indicating puberty sometimes develop due to excessive thinness, and sometimes they develop due to corpulence.
I love when the daf does science! I am pasting a quote from the Journal of Endochronology below. It basically backs up Rabbi Hiyya in that malnutrition and excessive thinness will delay puberty. (https://joe.bioscientifica.com/view/journals/joe/242/2/JOE-19-0223.xml)
“Among its numerous modulators, metabolic and nutritional cues are fundamental modifiers of the timing of puberty. Reproduction is an energy-consuming process, especially in females, and therefore, acquisition and maintenance of reproductive capacity are tightly bound to the state of body energy reserves. Accordingly, conditions of persistent deregulation of energy and metabolic homeostasis are correlated with alterations in puberty onset. Thus, while chronic energy deficiency (e.g. in malnutrition or anorexia) is associated with delayed puberty, excess of body energy stores (e.g. in obesity) is commonly been linked to earlier onset of puberty (Hill & Elias 2018, Manfredi-Lozano et al. 2018“
Excessive weight can mess with our hormones as well. These rabbis may not have the strongest math skills, but they certainly knew a thing or two that seems like more advanced medical knowledge today.
