When the temperatures rise, so does the strain on your heart. Hot weather doesn’t just make you uncomfortable—it can be especially dangerous for those with heart conditions or high blood pressure. Even healthy hearts can struggle when your body is working overtime to stay cool.
Here are six tips from Dr. Carlos Albrecht, an Intermountain Health cardiologist at St. James Hospital in Butte, Montana, to help you stay safe and protect your heart during the heat of summer:
1. Stay Hydrated—Even Before You Feel Thirsty
Your heart has to work harder when you're dehydrated. Water helps your blood circulate more easily and allows your body to sweat and cool down. Without enough fluids, blood thickens and can strain your cardiovascular system.
Tip: Drink plenty of water throughout the day. If you're outside or exercising, sip water regularly. Avoid excessive caffeine and alcohol, which can dehydrate you even further.
2. Avoid the Midday Heat
The sun’s rays are strongest between 10 a.m. and 4 p.m., and heat stress on your heart increases during this window.
Tip: Plan outdoor activities for early morning or later in the evening. If you need to be outside during peak hours, take breaks in the shade or in air-conditioned spaces.
3. Dress Smart for Summer
Wearing the right clothing can help your body cool itself more efficiently.
Tip: Opt for loose-fitting, light-colored clothing made of breathable fabrics like cotton or moisture-wicking athletic wear. A wide-brimmed hat and sunglasses can help reduce sun exposure.
4. Know Your Limits
Hot weather can increase your risk of heat exhaustion or even heart attack, particularly if you're overexerting yourself.
Tip: If you start to feel dizzy, fatigued, or short of breath, stop what you're doing, rest in a cool place, and drink water. Always listen to your body—pushing through isn’t worth the risk.
5. Check-In on Medications
Some medications—such as diuretics, beta-blockers, and certain blood pressure pills—can make you more sensitive to heat or increase fluid loss.
Tip: Ask your doctor or pharmacist whether any of your medications could affect your ability to handle heat, and make a plan for staying safe.
6. Know the Warning Signs of Heat Stroke
Heat stroke is a medical emergency that can be fatal without quick action. If you or someone else experiences the following symptoms, call 911 immediately:
- A high body temperature (over 103°F)
- Hot, dry skin or profuse sweating
- Rapid pulse
- Dizziness or confusion
- Fainting or unconsciousness
Summer should be a time to enjoy the outdoors—but not at the expense of your heart health. By staying mindful of the heat and how it affects your body, you can safely enjoy the season while keeping your heart protected.