You wake up feeling like you’ve run a marathon, even though you didn’t work out. Your body feels heavy, sore, and achy—almost like you’re coming down with something. But you’re not sick. What’s ...

Hugh Taylor has long studied the endometrium, or lining of the uterus. But it was his patients who got him interested in better understanding endometriosis specifically. Endometriosis is a disease in ...

Allergies occur when your immune system overreacts to harmless substances, like pollen or pet dander. Allergies to substances like pollen commonly cause sneezing, a runny nose, and itchy eyes. Chronic ...

Do you toss and turn all night, unable to get comfortable no matter how you contort because of annoying aches in your back, hips, knees, or who knows where else? You're not alone. Reports indicate ...

Ever wake up with a sore lower back or achy shoulders that just ruin the rest of your day? Or get up from bed and try to greet the morning, only to find your neck is too stiff to turn to the window?

The pain from endometriosis, which affects an estimated one in 10 Americans born female, can be terrible. Some people are unable to work or go to school. Yet many physicians don’t recognize the ...

Consumer Reports has no financial relationship with any advertisers on this site. Like other parts of your body, your muscles change over the years. “As you age, your muscle fibers become less dense, ...

I’ve always believed in being proactive about my health, but like most people, I usually only see a doctor when something feels wrong or if I’m overdue for an annual exam. That changed when I learned ...