This summer, you may be planning to spend some time outdoors. Whether you enjoy an afternoon tennis game or relaxing on the beach, the summer heat can pose several risks for your health– including dehydration. Dehydration occurs when the body loses more fluids that it takes in, often occurring during times of extended sweating, or during the course of an illness that causes diarrhea or vomiting. Mild dehydration can often be treated by drinking water ...