When does the penis develop completely?

The normal length of the penis of Chinese male adults is 3.5 to 12 cm at most, with an average of 7.1 cm, and 7 to 18 cm when erect, with an average of 12.4 cm. The normal diameter is 5.5 to 11 cm, with an average of 8.1 cm at the minimum diameter, and 8 to 14.5 cm when erect, with an average of 11.1 cm. So, when does the growth and development of the male reproductive organ end?

When does the male reproductive organ end its growth and development?

Male genitals usually start to grow and develop after men enter puberty, which is usually between 10 and 15 years old. Some patients will start earlier, and some patients will start later. This is related to individual differences. When boys develop, they are usually accompanied by the growth of male pubic hair, frequent ejaculation, prominent Adam's apple and other secondary sexual characteristics. Boys' development usually lasts until they are over 18 years old. After 18 years old, the growth and development of male genitals will gradually slow down, or even stop growing and developing. If you have entered puberty and there is no obvious male development, you need to see a doctor immediately for relevant examinations to understand the status of the body's female hormones. If the male hormone level is too low, you need to supplement it immediately.

In fact, if the penis is over 5cm when erect, you can have sexual intercourse. If it is shorter than 5cm when soft and no longer than 8cm when erect, it can be considered a short penis. However, a short penis does not mean no sexual function or low sexual function. This is different from a short penis caused by abnormal growth and development. The former is an individual difference within the normal range. As long as the penis is normal when erect, it can completely meet the normal requirements of married life.

For adults, the size of the penis after full erection is stable, and is related to age, region, height, weight, body fatness, and testicle size. Boys grow and develop under the stimulation of androgens during puberty, combined with cavernous body androgen protein kinase. Generally, growth and development are slow before the age of 11, and the growth rate is faster from 11 to 15 years old. Growth and development slows down after 16 years old, but there is still growth and development after 22 years old. Before the age of 30, the length can still increase slightly.

In the general population, penis size is proportional to height, weight, and testicle volume. Thin and obese boys have weaker development, but this difference is within the normal range, and there are also differences among different ethnic groups.