The high ER charge for treating one Colorado groom's hangover the day before his wedding illustrates how emergency room bills have become major headaches for many Americans.
Fresh water quenches thirst almost instantly, but salt water doesn't. New research shows how cells in the gut and on the tongue help the brain keep just the right concentration of salt in our bodies.
Ebola survivors in Nigeria credit the nasty-tasting oral rehydration solution for their recovery. One doctor wants more attention paid to that kind of low-tech treatment.