It can be the result of heredity, hormonal changes, medical conditions, or a normal part of aging. Anyone can lose hair on their heads, but it's more common in men. Baldness generally refers to excessive loss of scalp hair. Hereditary hair loss with age is the most common cause of baldness.
Perhaps one of the most common causes of hormone-related hair loss is a thyroid problem. Both too much thyroid hormone (hyperthyroidism) and too little (hypothyroidism) can cause hair loss. Treating thyroid disorder can often reverse hair loss. What is behind your distress from stress? We spoke to dermatologist Shilpi Khetarpal, MD, to learn why your hair is lost (and what to do about it).
But it usually takes a major stressor, such as divorce or the death of a loved one (a big work deadline or a blind date probably won't be enough to make your strands say sayonara). An illness can cause hair loss, especially if it goes hand in hand with a high fever. Chemotherapy drugs to treat cancer are notorious for causing hair loss. However, many other common medications can cause hair loss or thinning, such as antibiotics, antidepressants, and blood pressure medications.
Excessive shedding usually stops on its own, especially if it's caused by stress or fever. However, the doctor can detect underlying problems, such as thyroid disorders or nutrient deficiencies. Treating these problems will reverse hair loss. Most people lose 50 to 100 hairs a day as part of this natural cycle, more on days when they wash their hair.