Meta-Analysis

Has there been a big change in penis size over the last 30 years? This might be due to how our bodies are evolving or perhaps environmental factors. Our deep look into penis enlargement studies shows a 24% increase in size. Erect penis lengths went from 4.8 inches to 6 inches in a study of 55,761 men1. These results make us think deeply about what's causing these changes. They … [Read more...] about Meta-Analysis of Penile Enlargement Studies