Androgens are a group of hormones that play a key role in male traits and reproductive activity. The most well-known androgen is testosterone, which is produced mainly in the testes in males and in smaller amounts in females' ovaries and adrenal glands. These hormones are important for the development of male characteristics, such as facial hair, deep voice, and muscle growth. In addition to their role in males, androgens also have important functions in females. They help regulate various bodily functions, including libido and bone density. An imbalance in androgen levels can lead to health issues, such as polycystic ovary syndrome (PCOS) in women, which can cause irregular periods and other symptoms.