Why are some girls 18 years old and their faces haven't grown yet?

I was born in 18, and my face is still open. Some of them are due to late nutritional development, and some are due to genes.

In a person's life, there are two stages in which the body grows rapidly and the proportion of various parts of the body changes significantly. One is in the prenatal period and the first half year after birth, and the other is adolescence.

The rapid growth and development of adolescence is called the phenomenon of rapid growth of adolescence. In fact, this phenomenon begins before or at the same time as sexual maturity and ends six months to one year after sexual maturity.

Extended data:

Adequate and reasonable nutrition is the material basis for children's growth and development, and it is also an extremely important factor to ensure their healthy growth. The younger you are, the greater the influence of nutrition.

If malnourished, the weight will not increase or even decrease at first, which will eventually affect the growth of height and the body's immune, endocrine, neuroregulatory and other functions.

Baidu Encyclopedia-Development