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U.S. cohort studies

Studies on penile length in U.S. men, including a 2014 cohort study and later meta-analyses

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Jan 18, 2026
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Is penis size correlated with body height, weight, or testosterone levels in men?

The evidence shows a consistent pattern: testosterone exposure matters for penile growth before and during puberty but has little clear effect on adult penile size, while simple body measures (height,...

Jan 7, 2026

How do prepubic fat and BMI affect measured penile length across different measurement techniques?

Prepubic (suprapubic) fat and body mass index (BMI) both alter measured penile length, but in two distinct ways: mechanically, by burying part of the shaft in adipose tissue and shortening skin‑to‑tip...