It’s Too Darn Hot!

By now most of us know that an extraordinary heat wave is settling over much of the country. More than 175 million Americans are under heat alerts, with temperatures soaring into the triple digits across many states. Even places that don’t usually experience prolonged extreme heat are expected to feel it.

We’ve become so accustomed to hearing phrases like heat advisory, heat warning, and heat dome that they almost blend into the background. It’s easy to think, “It’s summer. It’s supposed to be hot.”

But here’s what often gets lost in the weather report.

Extreme heat is the deadliest weather hazard in the United States. In a typical year, it claims more lives than hurricanes, floods, tornadoes, lightning, and winter storms combined. Yet because heat deaths usually happen one person at a time, in homes, backyards, workplaces, or during everyday activities, they rarely make national headlines.

Why This Heat Wave Is Especially Concerning

It’s not just because it’s hot. It’s because it is pretty early in the season and most of the country hasn’t had time to adapt.

Our bodies become better at handling heat over time. Within about one to two weeks of repeated exposure, we begin sweating earlier, circulating blood more efficiently, and cooling ourselves more effectively. Athletes call this heat acclimatization.

Unfortunately, the opposite is also true.

When an unusually intense heat wave arrives suddenly, especially early in the season or after a stretch of mild weather, our bodies haven’t made those adjustments yet. Even healthy adults can become overheated much faster than they expect.

Another concern is something most forecasts gloss over – nighttime temperatures.

Normally, cooler nights allow your body to recover from the day’s stress. But when overnight temperatures stay in the upper 70s or 80s, your heart continues working harder while you sleep. Studies have shown that poor nighttime cooling increases cardiovascular stress, disrupts sleep, and contributes to higher rates of heat-related illness. In other words, your body never really gets to hit the reset button.

The good news? Heat illness is also one of the most preventable medical emergencies we see. Understanding why and how heat becomes dangerous can help you avoid becoming one of its victims.

Your Body Is Running an Incredible Cooling System

Your body likes stability.

Whether you’re outside in January or July, your body works incredibly hard to keep your internal temperature hovering around 98.6°F. Every enzyme, every organ, and every cell functions best in that narrow range.

When temperatures climb, your body launches an elaborate cooling system. Blood vessels near your skin widen so they can dump heat. Your heart pumps faster to move that warm blood to the surface. Sweat glands begin producing perspiration that evaporates and carries heat away.

It’s a remarkable system. Until it isn’t.

When the air is hot and humid, sweat can’t evaporate efficiently. It’s like trying to dry yourself with a soaking wet towel. Your body keeps working harder and harder, but the heat has nowhere to go. Your heart races. Your core temperature begins creeping upward. Eventually your cooling system simply can’t keep up.

That is why humidity matters just as much as temperature.

Heat, Head, and Heart

One of the biggest misconceptions about heat illness is that you’ll feel yourself getting into trouble.

Unfortunately, that’s often not true.

Before you become seriously overheated, dehydration and rising body temperature begin affecting your brain. Your concentration slips. Your reaction time slows. You become more irritable. Your judgment isn’t quite as sharp.

Ironically, one of the first things heat affects is your ability to recognize that the heat is affecting you. That is one reason heat stroke is so dangerous. By the time confusion develops, the situation has already become a true medical emergency.

Heat also puts tremendous strain on your cardiovascular system. As blood is diverted toward your skin to release heat, your heart has to pump harder to maintain blood pressure and circulation.

Think of your heart as your body’s air conditioner. During extreme heat, it doesn’t just work harder, it sometimes has to run at full blast all day and all night. For people with heart disease, that’s like asking an old car to drive up a mountain with the air conditioning on full. If you already have heart disease, high blood pressure, diabetes, kidney disease, or lung disease, those extra demands can quickly become overwhelming.

A Hidden Risk Many People Never Consider

Your medicine cabinet may influence how well you tolerate extreme heat. Several common medications can interfere with your body’s natural cooling system.

Diuretics (“water pills”) increase fluid loss. Some blood pressure medications and beta blockers affect circulation and heart rate. Antihistamines can reduce sweating. Certain antidepressants, ADHD medications, and medications used to treat Parkinson’s disease can also make it harder for your body to regulate temperature.

This doesn’t mean you should stop taking any prescribed medication.

It simply means you should be extra cautious during extreme heat. Call Amaze or check with your healthcare provider if you’re not sure if one of your medications increases your risk.

The Three Levels of Heat-Related Illness

Early signs of general heat illness include having cool, pale, or even flushed skin as well as headache, lightheadedness, or weakness. After that, there are the three identified stages of heat-related illness. The most important thing to remember is that the early signs of heat-related illness can escalate rapidly into life-threatening heat stroke. Recognizing the warning signs and acting quickly is critical.

Here are the symptoms you should look for:

• Heat cramps are exactly as they sound. Severe muscle spasms occur as a result of salt and water loss following exertion, most often in the hands, calves, and feet. Muscle spasms can spontaneously stop on their own, but lingering symptoms of soreness often persist for 24-48 hours. Although hard on the body, if you can relieve the cramps quickly by cooling down, rehydrating, and resting, they do not require medical attention.
• Heat exhaustion is a serious condition that occurs when the body’s core temperature increases to 101-104°F. Feeling agitated and anxious are common and some people may even faint as blood pressure tries to compensate but ultimately lowers. In addition to the symptoms of heat cramps, a person may experience vomiting, headache, fever, generalized weakness, reduced concentration, or impaired judgment. If you have any of these symptoms after heat exposure, you should consult a health care professional.
• Heatstroke is a true medical emergency and is often fatal if left untreated. The symptoms of heatstroke include the symptoms of heat exhaustion, as well as seizures, difficulty maintaining consciousness, and liver failure.

Six Ways to Handle the Heat

Fortunately, avoiding heat illness doesn’t require anything complicated.

• Respect the clock. Schedule outdoor exercise, yard work, or long walks for early morning whenever possible. The hours between 10 a.m. and 4 p.m. are usually the most dangerous.
• Drink before you’re thirsty. Thirst is actually a late warning sign. Sip water throughout the day instead of waiting until you feel dehydrated. If you’re sweating heavily for long periods, beverages containing electrolytes can also help replace what you’ve lost.
• Dress for physics, not fashion. Loose-fitting, light-colored clothing allows air to circulate and helps sweat evaporate more effectively. A wide-brimmed hat provides far more protection than a baseball cap.
• Know when it’s an emergency. The symptoms listed above like muscle cramps, dizziness, headache, nausea, unusual fatigue, and heavy sweating are warning signs that your body is struggling. If symptoms progress to confusion, difficulty staying awake, seizures, or loss of consciousness, call 911 immediately. Heat stroke is a life-threatening emergency.
• Check on someone else. Older adults, young children, people with chronic medical conditions, outdoor workers, and anyone living alone are at the greatest risk. A simple phone call or knock on the door during a prolonged heat wave can literally save a life.
• Keep babies and children out of hot cars. Babies and small children can go from zero to heatstroke in a matter of minutes. Their bodies cannot handle the same temperatures that ours can. It is not only babies forgotten in a back seat who lose their lives to heatstroke. Please think twice before putting babies and young kids in a car during a heat wave. If a car trip is essential, cool the car first. Eight children under the age of 15 have died of vehicular heatstroke in the US so far this year!

One Last Thought

We spend a lot of time preparing for blizzards, hurricanes, and severe thunderstorms because they come in hard and look dangerous.

Heat doesn’t. It usually tiptoes in with blue skies, sunshine, and what appears to be a perfectly ordinary summer day.

That’s exactly what makes it so deceptive. We treat heat the way many of us treat cholesterol or high blood pressure. Because we can’t always see it happening, we underestimate the damage it can do.

This week, and during the inevitable next few heat waves, give the weather a little more respect than you normally would. PLEASE keep your children out of hot cars. Stay indoors if you can. Slow down. Stay hydrated. Find a cooling center if you need it. Check on a neighbor. And postpone that afternoon bike ride or outdoor project until the cool breezes blow in.

Your body will thank you for it.