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Forget the Cicadas; remember to Beat the Heat
Posted By Clarksville Online News Staff On Sunday, June 5, 2011 @ 10:00 pm In News | No Comments
Heat is hard on the heart: how to take precautions
Nashville, TN – With the deafening soothing summer roar buzz of cicadas doing our hearts good (or not), we may be distracted away from the real issue these days: protecting our hearts against the extreme hot weather that has suddenly descended on the area.
The American Heart Association wants everyone to stay safe, stay healthy and take precautions to prevent heat exhaustion and heat stroke, which can have serious effects on health.
Extremely hot weather causes dehydration, heat exhaustion and heat stroke. These risks increase when the humidity is above 70 percent and the temperature is above 70 degrees F. Heat and humidity interfere with the body’s natural cooling process.
Physical activity outside in hot and humid conditions can be hard on your heart. This is true even for athletes who haven’t yet adapted to the heat. The problem is made worse because the heart is trying to deliver blood and oxygen to your working muscles while your body is trying to cool off by sweating. If you sweat too much, you lose fluid. This decreases your total blood volume. That means your heart has to pump even harder to get the smaller volume of blood to your working muscles, skin and the other body parts.
When you lose too much fluid, your body temperature rises and your nervous system doesn’t work properly. Extreme fluid loss can lead to brain and heart damage.
A good way to monitor your body fluid level is to weigh every morning after using the bathroom. If you weigh two pounds less than normal in the morning, you’re probably dehydrated and need to drink more water before doing any vigorous physical activity. (You may have lost weight as water but not as fat.)
Know the symptoms of heat exhaustion and heat stroke. If any symptoms appear, stop exercising and cool down immediately by dousing yourself with cold water. You may need to get medical attention. Heat exhaustion can progress quickly to heat stroke, which can kill you.
If you experience these symptoms, seek medical attention right away.
By taking precautions, everyone can get through the heat – and the cicada plague visit – in good shape.
For more information, visit www.heart.org .
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