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Worldwide Temporal Trends in Penile Length: A Systematic Review and Meta-Analysis
Belladelli F, et al. World J Mens Health. 2023 Oct;41(4):848-860. https://doi.org/10.5534/wjmh.220203
wjmh.org
Seventy-five studies published between 1942 and 2021 were evaluated including data from 55,761 men. The pooled mean length estimates were flaccid length: 8.70 cm (95% CI, 8.16–9.23), stretched length: 12.93 cm (95% CI, 12.48–13.39), and erect length: 13.93 cm (95% CI, 13.20–14.65). All measurements showed variation by geographic region. Erect length increased significantly over time (QM=4.49, df=2, p=0.04) in several regions of the world and across all age groups, while no trends were identified in other penile size measurements. After adjusting for geographic region, subject age, and subject population; erect penile length increased 24% over the past 29 years. Conclusions The average erect penis length has increased over the past three decades across the world. Given the significant implications, attention to potential causes should be investigated. The current report identified a significant difference in penile measurements across different geographical regions. Geographic variation is consistent with prior reports with other investigators also identifying longer measurements in sub-Saharan Africans, intermediate in Europeans, South Asians, and North Africans, and smaller in East Asians [91]. However, the cause for differences remains unknown and as migration continues, reported variations may lessen with time. |
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