COVID-19 and the Flu Can Increase Your Risk of Heart Problems

When most people think about getting sick from viruses like COVID-19 or the flu, they picture fever, cough, or fatigue. But doctors are discovering that these infections can also affect something much more serious — your heart.

A new study published in the Journal of the American Heart Association reviewed 155 scientific studies from around the world. The researchers found that viral infections such as COVID-19, influenza (the flu), HIV, hepatitis C, and shingles can all increase the chances of developing heart disease or stroke.

What the Research Found

According to the study:

• People who caught the flu were up to six times more likely to have a heart attack in the month after their infection.

• Those who had COVID-19 were nearly twice as likely to develop heart disease or suffer a stroke compared to people who were never infected.

The researchers explained that viruses can cause inflammation in the body, which may put extra stress on the heart and blood vessels. This makes it easier for blood clots to form and harder for the heart to pump efficiently.

Why Prevention Matters

Experts say that although viral infections can be dangerous, there are simple ways to protect yourself and your heart.
Lifestyle changes and preventive care make a big difference:

• Get vaccinated. Vaccines for COVID-19 and the flu help prevent severe illness — and may also protect your heart.

• Stay active. Regular exercise keeps your heart strong and improves circulation.

• Eat heart-healthy foods. Focus on fruits, vegetables, whole grains, and lean proteins.

• Don’t smoke. Smoking damages blood vessels and raises the risk of heart disease.

• Get regular checkups. Managing blood pressure, cholesterol, and blood sugar early can prevent serious heart problems later.

Dr. Kosuke Kawai, one of the lead authors of the study and an adjunct professor at UCLA’s David Geffen School of Medicine, explained it clearly:

“We often get vaccinated to reduce the risk of flu or other illness, but vaccines can provide additional benefits in protecting against cardiovascular disease.”

What This Means for You

Heart disease remains one of the leading causes of death in the United States, but doctors say that more than 99 percent of cases involve risk factors that can be managed or prevented.
That means making healthy choices — like staying active, eating right, and keeping up with vaccinations — can help you lower your risk dramatically.

The message from experts is simple:
Taking care of your immune system also takes care of your heart. When you protect yourself from viruses like COVID-19 and the flu, you’re protecting much more than just your lungs — you’re protecting your life.

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