Here’s a breakdown of the most rare and common blood types in the U.S. Different people have different types of blood running through their veins. Humans have four main blood groups: A, B, AB and O. These are defined by which antigens are present on the surface of red bloodContinue Reading

Researchers see promise in semaglutide drugs, which may tap into the brain’s reward circuits A class of powerful drugs can dramatically change people’s body weight. But one of the drugs’ most alluring jobs may happen in a spot that’s harder to see: the brain. Some people taking drugs such asContinue Reading

Here’s why older adults naturally lose muscle mass over time and how regular physical activity and resistance training can help Almost everyone shrinks with old age. Many older adults have more difficulty gaining muscle than they did in their childhood and teenage years. And when it comes to maintaining thatContinue Reading