16 years old, tiny penis. Why?

16-year-old penis is very small reasons usually include gonadal hypofunction, androgen insensitivity, genetic, etc., specific analysis is as follows:

1. gonadal hypofunction

If there is congenital gonadal hypofunction in boys, it will lead to insufficient androgen secretion, affect penis development, appear penis is very small.

2. androgen insensitivity

If the androgen receptor in the male body is abnormal, it will lead to the body can not be sensitive to identify and use androgen, and then affect penis development.

3. genetic

penis length is affected by genetic factors, if male members of the male family penis are relatively short, boys penis will be smaller than their peers.