So, our analysis of penis size data comprises 142 countries based on multiple data source and was mainly oriented by Veale et al. (2014) and Lynn's (2013) comprehensive scientific studies. When comparing these datasets, measurement methods vary considerably between studies. How To Know If Your Penis Size Is Normal And What Science Says About Whether It Matters The average length and girth of a penis is shorter than many of us think. Research shows the average penis size has grown by 25% over the past three decades, but it’s still probably smaller than you think. Are you one of those men who constantly worries that your penis isn't of an adequate size? Then you may be suffering from "small-penis syndrome." (Yes, that's an actual medical term.) More likely, you are simply intrigued to know how your manhood measures up against the rest of humanity. Either way ...

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