Environmental health Archive

High temperatures raise risk for heat exhaustion and heat stroke, and also stress the cardiovascular system, making the heart work harder. If you have a heart condition, here's how to keep cool and protect yourself when temperatures rise.

Wildfire smoke contributes greatly to poor air quality, and as wildfires become more frequent due to climate change and drier conditions, more of us and more of our communities are at risk for health harms. Here are ways to cope.

Older adults are especially vulnerable to heat-related ailments like heat exhaustion and heatstroke. The primary reason is biological, as aging bodies can't maintain a steady internal body temperature when external conditions change. Heart conditions and heart medications can add to the problem. Older adults can protect themselves from heat ailments by taking standard precautions during hot weather and recognizing the early symptoms of ailments so they can seek immediate treatment.

Typical insect bites produce redness, itching, swelling, and pain. Signs of a more severe bug bite include hives, nausea, vomiting, fever, chills, drainage, rashes, blisters, numbness, or skin discoloration. People with any of these bug bite symptoms should see a doctor.

Mosquito repellents that rely on certain natural substances may not be as effective when temperatures reach 90° or higher. For very hot weather, people may get better protection by using the synthetic repellent DEET.

Certain medications can leave people more vulnerable to heat-related effects or the sun's rays. The medications can raise the risk of dehydration, make people sweat too much or too little, impair the body's ability to regulate temperature, or raise the risk of getting a bad sunburn. In addition, higher temperatures may damage some medicines, including diuretics, blood pressure drugs, some antidepressants, thyroid replacement hormones, and some over-the-counter antihistamines.