Dr. Tim Johnson's Heat Wave Health Tips

July 4, 2002 — -- This Fourth of July could be a dangerous one because of the heat wave that's sweeping much of the East coast. Temperatures 10 to 15 degrees above normal mean that heat-related illnesses are a real risk for many people.

Recent weather conditions have been blamed for four deaths in Chicago and St. Louis so far this summer and scattered power outages in at least half a dozen states threaten to make a bad situation worse.

Roughly 400 people die of heat stroke every year, according to the Center for Disease Control. From 1979-1999, excessive heat exposure caused 8,015 deaths in the United States.

ABCNEWS' Dr. Tim Johnson says people can avoid heat-related illnesses by following some simple tips.

"There are a few basic things we hear all the time, but are worth repeating," Johnson told Good Morning America Thursday. "Wear light, loose-fitting clothes. Wear a wide-brimmed hat to keep the sun off your face. Wear sunscreen when you go outside. And avoid drinking too much alcohol."

People who depend on medication have to be extremely careful of possible heat-related health dangers — certain medications such as antihistamines and diuretics, can impair your body's ability to adjust to the heat. If you use any of these medications, be sure to limit your exertion and drink extra water. Always check with your doctor regarding how much exposure is right for you.

When it comes to hydration, water is the best solution. Many people are surprised to hear that carbonated water (not flavored soda) does the job just as well as still.

Keep in mind that it's best not to drink something that's extremely cold, because it puts you at risk for a stomach cramp. You're better off with a drink that's just a bit cool.

But Johnson recommends keeping ice on hand — for the back of your neck. "There are a lot of blood vessels there and you can cool down your internal body temperature by rubbing ice on the back of your neck," Johnson said.