Preventing Heat-Related Illnesses When the body heats up faster than it can cool itself, mild to severe illnesses may develop. It’s important to recognize the symptoms of heat-related illnesses and understand how to prevent, control and respond to their effects. Air temperature, humidity and clothing can increase the risk of developing heat-related illnesses. So can age, sex, weight, physical fitness, nutrition, alcohol or drug use, or pre-existing diseases like diabetes. How can you prevent or control heat-related illnesses? Drink water - Drink small amounts of water frequently, about a cup every 15-20 minutes. (Alcohol increases the loss of body fluids.) Limit exposure time...