Q: What type of hair loss is based on genetics?  

Androgenetic alopecia, also known as male or female pattern baldness, is a type of hair loss that is based on genetics. It is caused by a combination of genetic and hormonal factors that lead to the miniaturization of hair follicles. This type of hair loss affects both men and women and is the most common form of hair loss. Alopecia areata is an autoimmune disorder that causes hair loss in patches. Telogen effluvium is a type of hair loss that is caused by a disruption of the normal hair growth cycle, often due to stress, medications, or illness. Traction alopecia is a type of hair loss that is caused by pulling or tension on the hair, often due to tight hairstyles or hair extensions.