Arizona summers are known for soaring temperatures, and while most people focus on staying cool, it's equally important to think about how extreme heat can affect your heart. Hot weather causes your body to work harder to regulate its temperature, increasing demands on your cardiovascular system. For people with existing heart conditions, and even those who are otherwise healthy, taking a few simple precautions can help reduce the risk of heat-related health issues. [newsroom.heart.org], [cdc.gov]

Stay Ahead of Dehydration

When temperatures climb, hydration becomes one of the most important tools for protecting your heart.

A common mistake is waiting until you feel thirsty to drink water. However, health experts note that thirst is often a sign that your body is already becoming dehydrated. Drinking water consistently throughout the day helps your body maintain normal function, regulate temperature, and support healthy circulation. [cdc.gov], [heart.org]

In Arizona's dry climate, dehydration can develop quickly, especially during outdoor activities. Carrying a reusable water bottle and making hydration a regular habit can help you avoid unnecessary strain on your body and cardiovascular system. [directorsb....azdhs.gov], [cdc.gov]

Check the Air Quality Before Heading Outdoors

High temperatures are often accompanied by elevated ozone levels and poorer air quality. While many people associate air pollution with lung health, research shows it can also affect the heart.

Short-term exposure to air pollution has been linked to an increased risk of heart attacks, strokes, arrhythmias, and worsening heart failure, particularly among individuals with underlying cardiovascular disease. Heat can also worsen air pollution, creating a combination that may place additional stress on the body. [heart.org], [cdc.gov]

Before exercising, hiking, golfing, or spending extended time outdoors, check local air quality forecasts. On days when air quality is poor, consider moving activities indoors or limiting strenuous exercise during peak heat hours. [cdc.gov], [heart.org]

Watch Out for Hidden Sodium

Summer gatherings often feature foods like deli meats, hot dogs, chips, barbecue favorites, and other processed snacks. While convenient and tasty, many of these foods can contain significant amounts of sodium.

According to the CDC, more than 75% of the sodium Americans consume comes from processed and restaurant foods rather than the salt shaker. Excess sodium intake can contribute to elevated blood pressure, a major risk factor for heart disease and stroke. [stacks.cdc.gov], [fda.gov]

When possible, balance cookout favorites with fresh fruits, vegetables, and lower-sodium options. Small changes can support heart health while still allowing you to enjoy summer celebrations. [fda.gov], [stacks.cdc.gov]

Don't Leave Your Medications Behind

Summer travel often disrupts routines, making it easy to forget medications or miss scheduled doses.

Whether you're heading out for a weekend getaway or a longer vacation, remember to pack enough medication for your entire trip and continue taking it as prescribed. The CDC also recommends planning ahead for medication storage, particularly when traveling in hot climates where extreme temperatures can affect certain medications. [wwwnc.cdc.gov], [cdc.gov]

Staying consistent with your treatment plan while traveling can help keep your blood pressure, cholesterol, heart rhythm, and other cardiovascular conditions under control. [wwwnc.cdc.gov]

A Healthier Summer Starts with Small Steps

Protecting your heart this summer doesn't have to be complicated. Drinking water before you feel thirsty, checking daily air quality conditions, limiting excess sodium, and staying on schedule with medications can make a meaningful difference in your overall health and well-being. With a little planning, you can safely enjoy everything an Arizona summer has to offer. [cdc.gov], [newsroom.heart.org]

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Sources

1. Centers for Disease Control and Prevention (CDC). About Heat and Your Health. https://www.cdc.gov/heat-health/about/index.html
2. American Heart Association. Summer Heat Can Sneak Up Before You Feel Thirsty. https://www.heart.org/en/news/2026/07/16/summer-heat-can-sneak-up-before-you-feel-thirsty
3. CDC / NIOSH. Heat Stress: Hydration. https://www.cdc.gov/niosh/mining/UserFiles/works/products/training/keepingcool/2017-126_hydration.pdf
4. American Heart Association. Air Pollution, Heart Disease and Stroke. https://www.heart.org/en/health-topics/consumer-healthcare/what-is-cardiovascular-disease/air-pollution-and-heart-disease-stroke
5. CDC. Clinical Overview of Heat and Cardiovascular Disease. https://www.cdc.gov/heat-health/hcp/clinical-overview/heat-and-people-with-cardiovascular-disease.html
6. U.S. Food & Drug Administration (FDA). Sodium Reduction in the Food Supply. https://www.fda.gov/food/nutrition-food-labeling-and-critical-foods/sodium-reduction-food-supply
7. CDC. Get the Facts: Sodium's Role in Processed Food. https://stacks.cdc.gov/view/cdc/37507/cdc_37507_DS1.pdf
8. CDC Travelers' Health. Traveling Abroad with Medicine. https://wwwnc.cdc.gov/travel/page/travel-abroad-with-medicine
9. American Heart Association. Extreme Heat Is Rising—and So Is the Risk to Your Heart. https://newsroom.heart.org/news/extreme-heat-is-rising-and-so-is-the-risk-to-your-heart
10. Arizona Department of Health Services. Hydration Is Key to Preventing Heat-Related Illnesses and Heat-Related Deaths. https://directorsblog.health.azdhs.gov/hydration-is-key-to-preventing-heat-related-illnesses-and-heat-related-deaths/

Disclaimer: This article is for educational purposes only and is not intended as medical advice. Always consult your healthcare provider regarding questions about your health, medications, medical conditions, or concerns.