Dynamic alteration of serum testosterone with aging: a cross-sectional study from Shanghai, China

Level of the testosterone in a man's life span is very important. Studies on the serum testosterone concentrations in different age groups of healthy men were controversial. The aim of this study was to investigate dynamic changes of serum reproductive hormones with aging in healthy Chinese male and to compare its correlation with age.Total of 1,093 healthy Chinese men from Shanghai aged from 20 to 87 years old was enrolled in the study....