Medically reviewed by Kelly Wood, MD Key Takeaways Hormones serve as chemical messengers in the body and regulate functions ...

A man in his 70s who took a drug widely used as a treatment for high blood pressure and hair loss suffered side effects of ...

One man learned this firsthand when, after taking a medication for heart failure, he developed a new physical feature — enlarged breasts.

Brain cells (magenta) in the reward center of a rat’s brain release dopamine in response to opioids. According to a new study by WashU Medicine researchers, male and female rats with a chronic pain ...