Masturbation at the age of 13, in general, will not affect the height, but excessive masturbation may have some effects on the reproductive system and so on. Generally speaking, 13-year-old masturbation will not affect the height, but if you masturbate too much, it may cause reproductive system diseases, and in serious cases, it may also have a certain impact on their own fertility, so it is still recommended to avoid masturbation at the age of 13 as much as possible. The height development of 13-year-old children is mainly related to genetic, nutritional and environmental factors. If the growth hormone secretion is insufficient, picky eating partiality caused by malnutrition, or calcium elements insufficient and so on may have a certain impact on the height, but masturbation on the height of the impact is smaller. If a 13-year-old child masturbates frequently or has abnormal height development, he or she should go to the hospital in time.