Stanford study concludes that average penis size has increased 24% in 30 years
- Researchers found that the average penis increased in size from 4.8 inches in 1992 to 6 inches in 2021. But in some regions, they shrank.
- According to a new analysis, the average length of the erect male penis has risen by 24% between 1992 and 2021, from 12.27 cm (4.8 in) to 15.23 cm (6 in).
- The genital gains were not shared equally across the world, however. Asian and European men experienced the greatest increase in penis size, while North American males' phalluses deflated slightly.
- Researchers have offered a wide variety of explanations for lengthening penises, from earlier onset of puberty to the prevalence of porn.
Stanford study: Average penis size has grown 29% - Big Think
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Researchers found that the average penis increased in size from 4.8 inches in 1992 to 6 inches in 2021. But in some regions...