Hormones ! A person's hormones control the onset of puberty.
Puberty typically starts at around 11-12 years of age. It varies from person to person, however, and may not begin for some until the middle to late teen years. There are a number of factors that can initiate early and late onset of puberty. The biggest among these is diet, body type, and level of exercise. For instance, gymnasts who compete at the Olympic level may not begin puberty until between 18-20 years old; their bodies are too lean and their activity level is extremely high. Alternately, children who are grossly obese may begin puberty as young as 8 or 9. High levels of hormones in foods can result in early onset as well.
Girls start developing breasts with the onset of puberty usually between the ages of 12 and 14.
Before puberty, females and males both produce about the same amounts of estrogen and androgens. When puberty hits for males, more androgens than enstrogen is produced causing a change in voice and hair distribution. When puberty hits for females more estrogen than androgens is produced causing a monthly menstrual cycle, changes in their breasts and bone structure.
The first discharge of blood from the vagina is called menarche. It typically occurs during puberty, marking the onset of menstruation in females.
why do cell-mediated immunity decrease at puberty
The pituitary gland starts puberty. This signals the testies and adrenals to produce more hormones.
The pituitary gland.
After the onset of puberty, males produce semen.
The onset of puberty is triggered by the release of GnRH from the hypothalamus.
Biological Age
Children that are younger than the onset of Puberty
There are no proven links between diet and puberty onset.
menarche
Hi! The foods you eat and they have to be healthy and the amount of water you drink. Thanks I hope I did something for you.
Well, the menstruation starts at the age of 12-13 in girls. The term for onset of menstruation is menarche .
puberty
Menarche