Millions of people experience hair loss. Some people see their hair regrow without doing anything. Others need treatment for their hair to regrow. Sometimes, hair will not regrow.
The reasons for hair loss are many. When hair loss begins suddenly, the cause may be due to illness, diet, medicine or childbirth. If hair loss is gradual and becomes more noticeable with each passing year, a person may have hereditary hair loss. This is the most common cause of hair loss. It affects men and women. About 80 million people in the United States have hereditary thinning or baldness. Certain hair care practices also can cause noticeable hair loss. Refer to the graphic below for more information about hair loss statistics, causes and treatments.