Salt is a key part of our diets. It's also vital for our survival, as dietitian Lena Beal, MS, RDN, LD and National Spokesperson for the Academy of Nutrition and Dietetics previously told USA TODAY.

If you've seen your doctor about joint pain or muscle pain, you've probably been told to take an Epsom salt bath. "Epsom salt baths certainly aren't the cure-all they are sometimes advertised to be," ...