Heart disease is the No. 1 cause of death in the U.S., accounting for 1 in every 4 deaths. Despite efforts to diagnose and treat heart disease early, many Americans are unaware of their risk. Are you one of them?

“There are several significant risk factors that can contribute to heart disease. Having one or more of these risk factors — or ‘links’ — increases your risk of having a heart attack or having a form of heart disease,” said Mostafa O. El-Refai, M.D., interventional cardiologist with Norton Heart Specialists. “At the same time, not knowing whether you have risk factors also puts you at risk.”

You can learn your links to heart disease. Learn more about how each impacts your heart health and what you can do to lower your risk of heart disease.

Heart disease links: