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Index/Topics/Penis size and health

Penis size and health

The relationship between penis size and health, including the factors that influence perceived size and the importance of individual variation.

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Jan 12, 2026
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What scientific studies establish average penis size and debunk common myths about predictors like shoe or hand size?

Large, peer-reviewed syntheses place the average erect human penis in the 5.1–5.5 inch (≈13–14 cm) range and show that many popular predictors—shoe size, hand size, or height—do not reliably forecast ...