As of [update] , a systematic review of 15, men, and the best research to date on the topic, as the subjects were measured by health professionals, rather than self-measured, has concluded that the average length of an erect human penis is One Australian study of men looked at penis length and circumference in relationship to condom breakage or slippage. Mutations of some Hox genes that control the growth of limbs cause malformed genitalia hand-foot-genital syndrome. International Journal of Impotence Research. Environmental Health Perspectives.
Aimee. Age: 20.
Compared to other primates, including large examples such as the gorilla, the human penis is thickest, both in absolute terms and relative to the rest of the body.
Zoey. Age: 27.
The Ideal Penis Size In 10 Countries
Sexual selection and the origins of human mating systems. Some environmental factors in addition to genetics, such as the presence of endocrine disruptors , can affect penis growth. During the Renaissance , some men in Europe began to wear codpieces , which accentuated their genitals. Schonfeld published a penis growth curve in