Cracking your back can feel satisfying and relieve stiffness, but is it actually safe? Science shows that occasional back cracking is generally harmless, but frequent or forceful cracking may carry ...

Cracking your knuckles might feel satisfying, but it often earns disapproving looks or even dire warnings. For decades, people have believed that this seemingly harmless habit could lead to arthritis ...

I was seven years old when I first saw someone with severe rheumatoid arthritis. I had just met one of my grandmother’s cousins, whose swollen joints and gnarled fingers fascinated and terrified me. I ...