The Impact of Summer Heat on Heart Health

The blistering heat of summer can weigh heavily on both body and mind.

Rising temperatures can pose significant risks to heart health, particularly for those who already have underlying conditions.

Adeda Poil Yomade, a cardiologist at the Miami Heart & Vascular Institute in Maryland, pointed out that extreme heat forces the heart to work harder.

“When our bodies heat up, blood vessels close to the skin dilate, and more blood is circulated to help with cooling,” he explained in a conversation with Fox News Digital.

“To stabilize blood pressure, the heart needs to speed up its pace, working harder and demanding more oxygen.”

Yomade highlighted that elevated temperatures can stress the heart, potentially leading to dehydration and changes in blood concentration, which may trigger various symptoms.

Citing a study of more than 6,000 cases involving heat exposure, he mentioned that even slight increases in body temperature can raise heart rates by nearly 30 beats per minute.

“Research indicates that a 1°C increase in temperature raises the risk of cardiovascular death by about 2%. Heat waves significantly elevate the risk of heart attacks, heart failure, and irregular heart rhythms,” he noted.

He further added that this could be enough to cause a silent heart attack in individuals with existing coronary artery disease.

The American Heart Association (AHA) also mentions that certain heart medications might amplify how the body reacts to heat.

For those with heart conditions like coronary artery disease, heart failure, hypertension, or arrhythmia, taking preventative measures is crucial.

To minimize the risk of heart issues, experts recommend avoiding outdoor activities during peak heat hours, staying hydrated (including electrolyte intake), and seeking shade or cool areas.

Even for those without prior heart problems, it’s important to recognize potential signs of heat-induced cardiac stress.

“Watch for symptoms like chest tightness, increased shortness of breath, heart palpitations, leg swelling, and feelings of faintness,” advised Yomade.

Additional warning signs include unusual fatigue, heart sensations during rest, dizziness, nausea, and confusion.

“This situation can be enough to cause a silent heart attack in people with existing coronary artery disease.”

The AHA also highlights high body temperatures (over 103 degrees Fahrenheit) and other indicators of heat stroke, such as hot, dry, or damp skin.

Yomade wrapped up with a reminder: “Stay hydrated, take breaks in cool or shaded areas, limit daytime exertion, and wear light, breathable clothing to help your heart cope with the summer heat.”