What causes breast development?

1, hormone level changes

in puberty development, due to changes in hormone levels in the body, can lead to breast development in boys, resulting in breast and nipple enlargement, this situation usually will naturally subside after puberty.

2, drug factors

Some drugs may affect the hormone balance in boys, leading to estrogen levels rise, and then cause breast development, including anti-hypertension drugs, anti-epilepsy drugs, anti-depressants, such as amlodipine, sodium valproate and diazepam.

3, disease factors

Congenital testicular dysplasia, hyperthyroidism, liver cirrhosis and other diseases, can lead to abnormal hormone levels in boys, resulting in breast development.