Why do 16 year old boys lose their hair?

There are a number of reasons why 16 year old boys may start losing their hair. Some of these include:

- Genetics: Male pattern baldness, also known as androgenetic alopecia, is the most common cause of hair loss in men. It is caused by a combination of genetics and hormones. If your father or grandfather experienced hair loss, you are more likely to develop it as well.

- Hormones: Testosterone is the main male sex hormone. It is responsible for the development of male characteristics, such as a deep voice, facial hair, and increased muscle mass. Testosterone can also cause the hair follicles on the scalp to shrink, which leads to hair loss.

- Stress: Chronic stress can lead to hair loss. This is because stress can increase the production of the hormone cortisol, which can damage hair follicles.

- Medical conditions: Certain medical conditions, such as thyroid disease, diabetes, and autoimmune disorders, can cause hair loss.

- Medications: Some medications, such as chemotherapy, can cause hair loss.

If you are concerned about hair loss, it is important to talk to your doctor to determine the cause and get the best treatment option.