Male and female sexual hair patterns primarily differ due to variations in what factor?

Male and female sexual hair patterns primarily differ due to variations in the concentration of circulating (free) androgens. Androgens, which include hormones such as testosterone, play a crucial role in the development and distribution of body hair during puberty. In males, higher levels of androgens contribute to increased facial, chest, and body hair growth, leading to a more pronounced hair pattern. In contrast, females have lower levels of androgens, which results in less body hair and a distinct pattern of hair growth.

While genetics also influence hair patterns, particularly in terms of thickness and distribution, it is the hormonal differences that create the primary distinctions between male and female patterns. Diet and environmental factors can certainly affect overall health and hair condition but do not directly dictate the fundamental differences in hair patterns attributed to sexual dimorphism. Thus, the concentration of circulating androgens is the key factor that explains why males and females exhibit different sexual hair patterns.