Signs of Heat Sickness & Ways to Keep Cool -

Record-breaking heat is sweeping across much of the U.S., and it’s more than just uncomfortable. Extreme temperatures and humidity can quickly lead to heat exhaustion or even heat stroke.Knowing the signs of heat sickness–such as lightheadedness, heavy sweating, and disorientation–and taking proper precautions could save a life. Keep reading to learn:

Heat and humidity make it harder for your body to cool down, raising the risk of heat illness.
Staying in air-conditioned spaces, wearing loose, lightweight clothing, and drinking electrolyte-enhanced fluids are some of the best ways to stay cool in summer months.
Warning signs of heat-related illness include dizziness, nausea, heavy sweating, and confusion.
Older adults, young children, people with chronic conditions, and people who work outdoors are most at risk.

Why heat waves are dangerous

When your body is exposed to high temperatures for too long, it struggles to keep cool. Sweating is your body’s main cooling mechanism. But in extreme heat, sweat doesn’t evaporate as efficiently. This can lead to a dangerous rise in core body temperature.If you can’t cool down, critical functions (such as enzyme and organ activity) start to fail. Without intervention, this can progress to heat exhaustion or even heat stroke, a life-threatening emergency that requires immediate medical care.Humidity can intensify these risks. When there’s more moisture in the air, sweat doesn’t evaporate as easily, so it lingers on your skin. As a result, your body struggles to release heat, which is why hot, humid weather feels so oppressive–and why it poses a serious health risk.

Signs of heat sickness

Heat-related illness can come on quickly, so it’s vital to recognize the early signs before it progresses to heat stroke.Watch for symptoms like:

Dizziness or lightheadedness
Nausea or vomiting
Headache
Heavy sweating
Muscle cramps
Weakness or fatigue
Cool, clammy skin
Confusion or disorientation

If someone shows these signs–especially confusion, fainting, or vomiting–move them to a cooler place right away. Remove any excess clothing and offer fluids. If the person’s symptoms don’t improve within 30 minutes, get medical help immediately. These could be signs of heat stroke, which is a life-threatening emergency.

Who’s most at risk for heat-related illness?

Heat sickness can happen to anyone, but some people who face higher risks include:

Older adults, especially those living alone or without air conditioning. Aging affects the body’s ability to regulate temperature, and certain medications can interfere with sweating or hydration levels.
Infants and young children, who heat up faster and depend on adults to help them stay cool.
People with chronic conditions like heart disease, diabetes, or kidney issues, which can impair the body’s heat response.
People who work outdoors, such as those in construction, farming, or delivery, who may not take enough breaks from the heat.
Athletes and other active people who exert themselves in the heat.

If you or someone you know falls into one of these groups, take extra precautions and check in regularly during extreme heat.

Ways to keep cool in summer heat waves

In the cold, you can put on more layers, and your body naturally shivers to generate warmth. But in extreme heat, regulating your body temperature is more of a challenge.Here are the best ways to stay cool and safe this summer:

1. Find cooler areas

Stay in air conditioning whenever possible. If you don’t have it at home, go to a public library, mall, or cooling center if your city has one. Close the curtains and use fans when possible.

2. Dress for the heat

Wear lightweight, loose-fitting clothing. This kind of attire helps you stay cool by allowing sweat to evaporate more easily. Light-colored fabrics are also a smart choice, as they reflect the sun’s rays instead of absorbing them.

3. Stay hydrated, but don’t overdo it

You lose both water and salt when you sweat, so it’s important to replenish both. Drink fluids regularly, even if you’re not thirsty. And consider electrolyte-enhanced drinks or salty snacks if you’ve been sweating intensely.You can tell how hydrated you are by examining the color of your urine. Pale yellow usually indicates adequate hydration levels, while darker yellow is often a sign that you need more fluids.

4. Time your activity wisely

Avoid exercising or doing strenuous tasks during the hottest hours. If you need to be active outdoors, aim for early mornings or evenings when it’s cooler outside.

What to do if someone is showing symptoms of heat illness

If you or someone near you starts showing heat illness symptoms, act fast to prevent the condition from becoming life-threatening. Here’s what you should do:

Move the person to a shaded or air-conditioned space.
Have them lie down and rest.
Remove excess clothing if possible.
Apply cool, wet cloths to the skin or use fans to increase air circulation.
Offer sips of water or an electrolyte drink if the person is alert and able to swallow.

If the person is disoriented, vomiting, or losing consciousness, call 911 right away. These are signs of heat stroke and require emergency care.Heat waves can be dangerous, but they’re manageable with the right precautions. Be sure to stay cool and hydrated, and avoid peak temperatures when possible.A little planning can go a long way in keeping you and your loved ones safe this summer.