I've been searching the web to find any sound research on the influence of genetics on penis size across generations and penis size across male members of the same family. There doesn't seem to be any good research on the subject, probably for the obvious reason that no one is paying for it and it's not a topic openly discussed. There is some interesting research on number of males in a family, birth order, and the likelihood of being homosexual; there appears to be some residual increased levels of testosterone carried by a mother that has previously given birth to boys that influences later male births, which increases the likelihood of later born boys being homosexual; it's not one-to-one, just a greater likelihood. But that finding is not what this thread is about.
My adult son has a larger penis than I do so I was wondering what effects the genetics across family lines might have had to do with that. I also know that an older brother of mine has a bigger penis than I do but I'm not sure about two other brothers. Have any of you found research on this topic? Do you know how your penis size compares with your brothers? Comparisons with your father's penis size and your own?
My adult son has a larger penis than I do so I was wondering what effects the genetics across family lines might have had to do with that. I also know that an older brother of mine has a bigger penis than I do but I'm not sure about two other brothers. Have any of you found research on this topic? Do you know how your penis size compares with your brothers? Comparisons with your father's penis size and your own?
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