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It has been suggested that differences in penis size between individuals are caused not only by genetics , but also by environmental factors such as culture , diet and chemical or pollution exposure. A sample that is not representative of the population to which generalizations are to be made. Schonfeld published a penis growth curve in Androgens like testosterone are responsible for penis enlargement and elongation during puberty. A study conducted at the Australian National University , published in early , showed that penis size influences a man's sex appeal, and the taller the man, the bigger the effect. Ancient Greek kouros sculpture from Anavyssos dating to c.

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Human penis size

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Androgens like testosterone are responsible for penis enlargement and elongation during puberty.

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World Penis Data… Again

The evolutionary reasons for the increased thickness have not been established. Environmental Health Perspectives. London, England: Thames and Hudson. Berlin and Heidelberg, Germany: Springer-Verlag.

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