Why Do Some People Go Bald? Posted on September 30, 2017May 27, 2020 by Admin Male and female pattern baldness refers to a loss of hair on the scalp in men and women. It happens as hormone levels change over one’s lifetime, and especially in the later years. It is thought to affect 50 million men and 21 million women in the United States, and half of all men by the age of 50 years. Although a natural part of the aging process for millions of men, hair loss can be psychologically distressing. Sudden or unexpected hair loss can sometimes indicate a more serious health condition that may need medical attention. For more information on male pattern baldness, please click here. For more information on female pattern baldness, please click here.