Hair loss can be caused by several factors. These include genetics, medical conditions, lifestyle, and certain medications. The most frequent cause is androgenetic alopecia — a hereditary condition that leads to gradual hair thinning. Other medical causes of hair loss include autoimmune diseases, thyroid disorders, and scalp infections. Some medications, such as chemotherapy drugs and blood thinners, can also cause hair loss. Lifestyle choices can also contribute. Poor diets that lack essential nutrients, stress, and harsh hair treatments (such as tight hairstyles and frequent use of heat styling tools) can all contribute to hair loss. In general, the cause of hair loss is often a multifactorial issue. If you're experiencing hair loss, it's important to speak with a healthcare professional to determine the root cause and develop an appropriate treatment plan.