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A 1990 study of 109 Chinese men identified the average flaccid stretched penis length of 13.9 cm (5.5 in), and among 14 of the men, the average erect length found was 13.7 cm (5.4 in). [36] Another 1993 study of 104 Chinese men found the average stretched penis length of 13.8 cm (5.4 in), and an average erect length of 13.5 cm (5.3 in). [37]
Among all primates, the human penis is the largest in girth, but is comparable to the chimpanzee penis and the penises of certain other primates in length. [13] Penis size is affected by genetics, but also by environmental factors such as fertility medications [14] [unreliable medical source?] and chemical/pollution exposure.
The study, published Feb. 15 in The World Journal of Men’s Health, examined data from 75 different studies between 1942 and 2021 that recorded the penis size of their study participants.
A penis (/ ˈ p iː n ɪ s /; pl.: ... As with any other bodily attribute, the length and girth of the penis can be highly variable between mammals of different ...
English: Penile girth nomogram. Data from the study: Veale, David (2015). "Am I normal? A systematic review and construction of nomograms for flaccid and erect penis length and circumference in up to 15 521 men". BJU International. doi:10.1111/bju.13010
Results from LifeStyles condom manufacturer's study of penis size, displayed in inches. The data is listed by percentile (i.e. a male with a 6 in (15.24 cm) penis is greater in length than 70 percent of those measured.) Date: 7 October 2007: Source: Own work based on: Penis percentile.jpg, redrawn in Gnumeric and exported to SVG. Author
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We averaged the data on erect penis size and found the averages to be approximately: Orientals, 4 to 5.5 inches in length and 1.25 inches in diameter; Caucasians, 5.5 to 6 inches in length and 1.5 inches in diameter; Blacks, 6.25 to 8 inches in length and 2 inches in diameter.