
Richard M. Stewart, MD
With the constant, above average temperatures, even in the Highlands-Cashiers area, heat exposure concerns are not to be taken lightly. Many people may experience serious problems associated with the warm temperatures.
Exposures to excessive heat can become dangerous when our bodies do not properly cool down to a sustainable temperature. Under circumstances when the body’s temperature rises rapidly, our system will compensate and cool down by sweating. Sometimes though, sweating isn’t enough. When one’s body temperature reaches extreme levels, brain damage or damage to vital organs can occur.
“Age can play a major role in how our bodies deal with the heat,” said Dr. Richard Stewart, Board Certified Internal Medicine Physician. “Our senior residents are more susceptible to temperature extremes. This can be attributed to decreases elasticity of blood vessels, certain medications, and an increased risk of dehydration,” said Dr. Stewart.
The older we get, the less our blood vessels dilate, meaning the less heat the body releases. Beta blockers found in blood pressure medications and nitrates for cardiac control also effect the constriction of blood vessels while diuretics, cause the body to rid salts greatly affecting the probability of dehydration.
Humidity is another major factor. “When humidity is high, sweat does not evaporate as quickly, in turn preventing the release of heat,” said Dr. Stewart. Other factors include obesity, fever, dehydration, heart disease, mental illness, poor circulation, sunburn, prescription drug and alcohol use.
The best defense is to be knowledgeable and prepared. Prevention is the key said Dr. Stewart. “Several things to remember during extreme heat conditions are: drink plenty of fluids and increase with exposure, make sure to replace the salt your body loses when sweating with minerals from a sports drink, wear appropriate clothing (light weight and light colored), apply sunscreen as directed, and try enjoy time spent outdoors early in the morning and late in the evening.”
Recognition of heat exhaustion will also prevent negative health effects from extreme heat exposure. Symptoms of heat exhaustion include: heavy sweating, paleness, muscle cramps, tiredness, weakness, dizziness, headache, nausea, vomiting or fainting. If these symptoms arise, immediately take action to cool down the bodies’ temperature. “Individuals can take a cool shower or move to an air conditioned location. If symptoms continue, seek medical attention,” said Stewart.
For more information visit www.cdc.gov.