Risk factors for cardiovascular disease can build over time, so even studies that follow patients for more than a decade may not capture a complete picture.Īnd her advice for patients still hasn't changed. Like Sperling, Crans Yoon said the topic overall needs more research. In turn, that could lead to a patient being prescribed medication to reduce high blood pressure. One potential reason for her study's findings, she said, was patients with hay fever had more frequent visits to the doctor, which could lead to more blood pressure screenings. "Since then, a couple other studies have come out that kind of show a similar association," she said. "We thought frankly it would be the opposite."Ĭrans Yoon, an allergist and immunologist, said patients were still more likely to have high blood pressure, despite a smaller chance for heart attack. Angelina Crans Yoon, the study's lead author. "Other allergic conditions such as asthma have been shown in several studies to have an increased risk of cardiovascular disease, so it was a little surprising to us that we found this association," said Dr. That study looked at Kaiser Permanente Southern California patients from 1999-2012. The results contrast to findings from another 2016 study in the Annals of Allergy, Asthma and Immunology, which found patients with physician-diagnosed allergic rhinitis, or hay fever, had a significantly lower risk for heart attack than patients without hay fever. "This is an area where further investigation is needed." Laurence Sperling, the Katz Professor in Preventive Cardiology at Emory University School of Medicine in Atlanta. "There appears to be an association between seasonal allergies and cardiovascular health," said Dr. Heart attack risk was highest in May and June, when tree and grass pollen are most common. The study found the risk of having a heart attack was 5.5% higher on days with the highest pollen levels compared to days with the lowest levels. A look at two studies offers examples of differing conclusions.Ī 2016 study in the American Journal of Epidemiology examined the relationship between airborne allergen concentrations and emergency room visits for heart attacks in Ontario, Canada, from 2004-2011. They're also stimulants, which can increase heart rate.īut determining the extent of the direct connection between allergies and heart health is a topic that needs more research. When seeking relief, people with allergies who are concerned about heart disease or high blood pressure must be especially careful when taking blood pressure-raising, over-the-counter decongestants. Yet unlike allergies, coronavirus causes a fever, with other symptoms including cough and shortness of breath. Seasonal allergies can cause sneezing, runny nose, itchy eyes and cough. It also coincides this year with the arrival of COVID-19, which could make allergy sufferers hyperaware of every sneeze and sniffle.īut there are key differences in symptoms. Spring brings warmer temperatures, blooming flowers and, for millions of Americans, the arrival of allergy season.
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