New Insights Into Older Hearts

Heart disease is more common in people over 65, but treatments are better than ever. That can complicate decision-making for older heart patients.

It turns out that the Isley Brothers, who sang that 1966 Motown hit “This Old Heart of Mine (Is Weak for You),” were onto something when they linked age to an aching and flagging heart.

Heart disease, the nation’s leading cause of death and disability, has been diagnosed in about 6 percent of Americans ages 45 to 64, but in more than 18 percent of those over 65, according to the Centers for Disease Control and Prevention.

Old hearts are physiologically different. “The heart gets stiffer as we age,” said Dr. John Dodson, director of the geriatric cardiology program at NYU Langone Health. “It doesn’t fill with blood as easily. The muscles don’t relax as well.”

Age also changes the blood vessels, which can grow rigid and cause hypertension, and the nerve fibers that send electrical impulses to the heart. It affects other organs and systems that play a role in cardiovascular health, too. “After age 75 is when things accelerate,” Dr. Dodson said.

But in recent years, dramatic improvements in treatments for many kinds of cardiovascular conditions have helped reduce both heart attacks and cardiac deaths.

“Cardiology has been blessed with a lot of progress and research and drug development,” said Dr. Karen Alexander, who teaches geriatric cardiology at Duke University. “The medications are better than ever, and we know how to use them better.”