List of Aging Time of Women’s Organs with Wrinkles at 19 Years Old

　　face skin：female The first wrinkles started to appear at the age of 19 and a half； male At the age of 35, the facial skin begins to appear dry, rough, and loose, and the facial contours are no longer clear.

Lungs: Aging begins at the age of 20. Lung capacity begins to decline slowly from the age of 20, and by the age of 40, some people begin to breathe heavily. At the age of 30, men will inhale 946 milliliters of air with each breath, and by the age of 70, this number drops to 473 milliliters.

brain and nerve System: Aging begins at the age of 22. Nerve cells in the brain slowly decrease. After the age of 40, nerve cells will decrease at a rate of 10,000 per day, which will affect memory and brain function.

Hair: Men's hair begins to turn gray after the age of 30, while women's hair begins to turn gray around the age of 35. After 60, the number of hair follicles decreases and the hair becomes thinner. Black hair is because the hair contains a kind of melanin. The human body does not have glands that secrete melanin uniformly. Melanin is produced in each hair separately, so the hair always turns white one by one.