Need help right now? This question was submitted to Kids Help Phone by a young person and answered by one of our professional counsellors. At what age does the penis start growing?? As a boy grows up his penis will grow in seize. But growth is the most noticeable during the teen years. During the teen years a boy will ejaculate come when he has an orgasm.
Is this the right size for my age? All the other boys in my class have hair under their arms and I only have a little bit. Am I developing late for my age? It may seem hard to understand, but there really isn't a correct size for the penis solely based on your age. As you've pointed out, some of the boys in your class are very far along in their development. But this doesn't necessarily mean that there's something wrong with you. Boys can begin their pubertal changes as young as nine, but some boys don't start until 14, and all of that is considered normal.
Research in rats has found that penis length is pre-determined by the action of hormones during a limited time frame early in fetal development. Exposure to hormones after this time can speed-up penis growth, but ultimately cannot increase the size reached in adulthood. The research has important implications for clinical management of children born with penile abnormalities. The results are published in the International Journal of Andrology. The discovery was made by scientists at the Medical Research Council Human Reproductive Sciences Unit at the University of Edinburgh as part of an ongoing programme of research into the origins of common male reproductive disorders.
Penis growth is influenced by the hormones of puberty. As such, the penis begins to grow more rapidly than usual between ages 10 and 14 and can continue to grow until ages 16 to In addition to other physical changes experienced during puberty, such as becoming more muscular and getting taller, this is the time when your penis may become erect in response to becoming sexually aroused, during sleep, or even at unpredictable times.