Endometriosis occurs when tissue that lines the uterus (womb) grows elsewhere, usually on the ovaries, fallopian tubes, and the area behind your uterus. This tissue can also grow on the bladder, bowel ...

Interoception is how your brain senses and responds to what’s going on inside your body. “It’s how we know when we’re hungry, thirsty, anxious, or even need to take a deep breath,” says Wen G. Chen, ...

Your skin is your largest organ—and unlike your heart or lungs or kidneys, you can actually see it. That makes it a useful window into what’s going on inside your body. “It’s an immediate indicator of ...