The most common cause of hair loss is a hereditary condition called androgenetic alopecia. It’s more commonly known as male-pattern baldness or female-pattern baldness, and it tends to run in families.

Hormonal changes: A variety of conditions can cause permanent or temporary hair loss, including hormonal changes due to pregnancy, childbirth, menopause, and thyroid problems.

Hair loss as a side effect: Certain drugs used for cancer, arthritis, depression, heart problems, gout, and high blood pressure may cause hair loss as a side effect.

The hair may not grow back the same after undergoing radiation therapy to the head. The extent of hair loss depends on the dosage and the area treated.

Many people experience a general thinning of hair several months after a physical or emotional shock. This type of hair loss is often temporary.

Excessive hairstyling or hairstyles that pull your hair tight, such as pigtails or cornrows, can cause a type of hair loss called traction alopecia. Hot oil hair treatments and permanents can cause inflammation of hair follicles that leads to hair loss.

Lack of proper nutrition can contribute to hair loss. Nutrient deficiencies, especially in iron or vitamin D, may affect hair health.