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Heart health

Heart Health Glossary

Use this glossary from the National Institute on Aging to understand terms related to heart disease, heart attacks, stroke, and cardiovascular disease.
Anatomy of the heart showing ventricles

What Is a Heart Attack?

What is a heart attack? Know the symptoms—chest or upper-body pain, nausea, and more—and what to do in this emergency. Call 9-1-1 right away!
An older man experiences severe pain in his chest.

What Is Heart Failure?

Heart failure is a serious, common condition caused by other diseases or conditions that damage the heart muscle. Learn what happens during heart failure.
An older woman with swollen feet puts on her shoes.

Heart Health and Aging

Find out how your heart works and how the heart and blood vessels change with age. Read about what heart disease is, and get some tips on how to prevent it.
Stethescope and electrocardiogram prinout