A lot of people think of hormones as being connected to the human reproductive system. But there's a lot more to them than that. As we grow older, organs and other parts of our bodies get increasingly worn out, and our skin is certainly no exception. But the rate of decrepitude depends a lot on individual hormone levels.
In the first few decades of human life, skin naturally renews itself every 30 days or so. But as we age, this process begins to take more than 30 days, the interval between skin dying and new skin being produced gets prolonged. So it is not surprise that after people hit 30 and start approaching middle age, they begin to worry more about sluggish skin, hair and nail replenishment.
Many teenagers suffer from acne and, for a minority, this problem can persist into adulthood, causing self-esteem issues because of the way the condition can spoil a person's appearance. One of the main causes of acne is overproduction of androgen _ the "male" hormone that both men and women produce _ that stimulates the release of oil by sebaceous glands in the skin.
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