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Genetic factors and penile size

The potential genetic factors contributing to individual and population variation in penile size.

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2 results
Feb 3, 2026

When does penile growth typically stop during male puberty?

is driven by androgens during puberty and typically finishes around the end of puberty—most commonly in the late teens to early twenties, with many sources citing an endpoint between about 18 and 21 y...

Jan 8, 2026

How does ethnicity influence average penis size?

Large, clinician‑measured reviews put the global average erect penis length at roughly 5.1–5.3 inches (≈13.1–13.5 cm), and most high‑quality experts say ethnicity explains at most small shifts in grou...