Hair is made of a type of protein called keratin. A single hair consists of a hair shaft (the part that shows), a root below the skin, and a follicle, from which the hair root grows. Hair loss is a big worry to many people, both male and female. Hair loss also kown baldness. More than half of men and women in the United States experience hair loss. About 30% of people have hair loss by age 30 years, and about 50% have hair loss by age 50 years. Abnormal hair loss can be due to many different causes, but about 50 percent of the population experience normal hair loss by the time they reach 50.

The 50–100 hairs that everyone loses each day frequently get entangled with the remainder of the hair. There are many causes of hair departure. Hormonal problems may induce hair departure. If your thyroid gland is overactive or underactive, your hair may slip away.