factually
Index/Topics/Racial differences in genital size

Racial differences in genital size

Claims about racial differences in genital size are often based on limited or methodologically weak studies.

Fact-Checks

2 results
Jan 28, 2026
Most Viewed

How reliable are stretched‑penis measurements as predictors of true erect length?

(commonly stretched penile length, SPL) correlate with erect length in some studies but are only a moderately reliable predictor overall: finds stretched/flaccid measures typically underestimate erect...

Jan 21, 2026

How do cultural and sampling differences affect reported average penis size across countries?

Reported cross‑national differences in average are shaped as much by who measures and how as by biology: large meta‑analyses find smaller, more uniform global averages than pop culture implies, but co...