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Index/Topics/Genetics and penile development

Genetics and penile development

The influence of genetics, prenatal hormonal exposures, and nutrition on penile development.

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Feb 6, 2026

Are there significant regional or ethnic variations in penis size within the United States?

The best available scientific syntheses show that measurable differences in average penile length exist across global regions but, , reported differences among racial or ethnic groups are small, heavi...

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