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Published: 07/2/2026

Heat Stress: What to Watch for This Summer

Why Heat Matters for Heart Health

As temperatures rise, your heart works harder to keep your body cool. Heat, dehydration, and poor air quality can increase strain on your heart, especially if you already have a medical condition. Knowing the warning signs can help you stay safe and seek care early. 

Hot weather causes your heart to pump more blood and increases your heart rate. Dehydration can lower blood pressure and make it harder for your body to function properly. Together, these stressors can raise the risk of serious events like heart attack or stroke. 

Know the Warning Signs Watch for early symptoms of heat-related illness: 

  • Dizziness or fatigue 
  • Fast or irregular heartbeat 
  • Shortness of breath 

Seek emergency care right away if you experience: 

  • Chest pain 
  • Fainting or severe symptoms 

Who Is Most at Risk 

  • Older adults 
  • People with heart disease or high blood pressure 
  • Individuals who are taking certain medications

How to Protect Yourself Simple steps can help reduce your risk: 

  • Stay hydrated: Drink water regularly, even if you’re not thirsty
  • Plan your day: Limit outdoor activity to cooler times of the day 
  • Dress for the heat: Wear light-colored, loose-fitting clothing, and sun protection
  • Review medications: Some medications affect how your body responds to heat

Stay Safe at Home Your environment also plays a key role: 

  • Keep your home cool with fans or air conditioning 
  • Close blinds or curtains during peak heat 
  • Spend time in cooler or shaded areas 
  • Avoid heat from cooking, opt for lighter or no-cook meals 
  • Take cool showers or use damp cloths to lower body temperature 
  • Set reminders to drink water 
  • Check in on family, neighbors, and older adults who may need extra support 

Get the Right Care at the Right Time If symptoms develop, choose the level of care that matches your needs: 

  • Urgent Care: Ongoing dizziness, dehydration, or moderate symptoms
EMERGENCY DEPARTMENT   
(CALL 911 OR GO NOW) 
URGENT CARE PRIMARY CARE 
Chest pain, fainting, or severe symptoms Ongoing dizziness, dehydration, or moderate symptoms Questions or mild symptoms 

Protect Your Heart This Summer Heat-related illness can escalate quickly, but with awareness and a few simple precautions, you can stay safe. Listen to your body, take symptoms seriously, and don’t hesitate to seek care.