Think before you drink: When your beverage causes dehydration

“About 60% of the human body comprises water,” says Sreemathy Venkatraman, a wellness nutritionist, clinical dietician, and founder of Mitha Ahara: Eat to Live. It’s vital for our metabolic functions, she explains. It regulates the body’s temperature, keeps joints lubricated, delivers nutrients across cells, and protects against infections, as per Harvard Health.