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Penile growth in adolescent males

The factors influencing penile growth in adolescent males, including genetics, hormones, nutrition, and environmental exposures.

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Jan 27, 2026
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How do genetic conditions like Klinefelter syndrome or androgen insensitivity affect penile size?

(KS, typically 47,XXY) is often associated with reduced penile length in childhood and adulthood-related hypogonadism that can limit unless treated with androgens . (AIS) — ranging from complete to pa...

Jan 15, 2026
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At what age does the penis typically reach final adult size?

Most males reach their final penis size around the end of puberty — commonly by the late teens — with medical sources clustering the typical age range between about 16 and 21 years old, and many citin...