The male sex hormone dihydrotestosterone (DHT) may play a key role in hair loss.[1, 4, 6] DHT is a powerful androgen that can shrink hair follicles, leading to thinner hair and eventually hair loss.[1, 4, 6] This type of hair loss is called androgenetic alopecia, and it is the most common cause of hair loss in both men and women.[4]
Other hormones that can affect hair growth include:
- Testosterone: This hormone is also an androgen, and it can contribute to hair loss in men.[2]
- Estrogen: Women often experience hair loss after childbirth or during menopause due to fluctuating estrogen levels.[5]
- Thyroid hormones: An imbalance of thyroid hormones can lead to hair loss.[7]
- Corticosterone: This stress hormone has been shown to affect hair follicle stem cells.[3]
It's important to note that hair loss can be caused by various factors, including:
- Genetics: Hair loss is often inherited.[7]
- Medications: Certain medications can cause hair loss as a side effect.[7]
- Nutritional deficiencies: A lack of certain nutrients can also lead to hair loss.[7]
- Medical conditions: Some medical conditions, such as thyroid disease, can cause hair loss.[7]
If you are concerned about hair loss, you should talk to a doctor or dermatologist. They can help determine the underlying cause and recommend appropriate treatment options.
