Why does Gatorade cure headaches?

Gatorade is known to provide a solution to headaches caused by dehydration, primarily due its high electrolyte levels. The added electrolytes replace minerals that the body has lost through sweat.

The body requires five electrolytes for proper functioning: calcium, magnesium, chloride, potassium and sodium. These minerals are vital in certain bodily functions, including those performed by the heart, muscle tissue and the nervous system. Sodium, with the help of other minerals, works to ensure that bodily fluids remain level, thereby preventing dehydration. Drinking Gatorade when experiencing signs of mild dehydration can help to replace lost electrolytes and hydrate the body.