Hormone tests are often done as part of routine bloodwork, but your healthcare provider may order them if you're having menstrual issues, changes in sex characteristics, fatigue, loss of sex drive, or ...

Do you know what your hormone levels are? Should you? Your body is home to more than 50 hormones — chemical messengers that compose the endocrine system — and hormonal changes may reflect any number ...

Hormones can be helpful heroes, supporting the immune system and a healthy sleep-wake schedule. But they can also be culprits of frustrating body issues, like excess weight that won’t come off despite ...

Most people assume that our genes determine the characteristics that make males and females distinct from each other: sex organs, secondary sex characteristics, personality, behavior, and even ...