The American Heart Association is alerting the public to the compounded health risks posed by wildfire smoke and extreme heat, as parts of the U.S. experience both simultaneously. Dr. Manesh R. Patel, volunteer president of the American Heart Association, emphasized that the combination is extremely dangerous, especially for individuals with chronic conditions such as heart disease. While respiratory issues are often the primary concern with wildfire smoke, the cardiovascular impact is significant and far-reaching.
Wildfire smoke contains fine particulate matter that is linked to cardiovascular risk. A study published in Circulation found that the risk of fatal heart attacks nearly doubled during days of extreme heat waves and high levels of fine particle pollution, with greater risks for women and older individuals. Another study in the Journal of the American Heart Association reported that exposure to heavy wildfire smoke raised the risk of out-of-hospital cardiac arrest by up to 70%, affecting both men and women, adults aged 35-64, and communities with lower socioeconomic status.
To reduce risks, the American Heart Association recommends staying indoors with doors and windows closed, using high-efficiency air filters, and limiting outdoor activity, especially during peak heat hours. Wearing a mask outdoors, staying hydrated, and avoiding alcohol and caffeine are also advised. It is crucial to recognize symptoms of heart attack, stroke, and heat stroke, and to call 911 immediately if they occur. Checking on older adults and those with chronic conditions, as well as bringing pets indoors, is recommended.
Dr. Patel stressed the importance of being alert and prepared, noting that awareness and precautions can make a life-saving difference. The U.S. Environmental Protection Agency offers a zip code-level air quality tracking map at airnow.gov to help individuals monitor local conditions. For more resources, visit the American Heart Association at heart.org.
