Yes Jalapenos when eaten in moderation are very heart healthy and good for your heart.
Eating Jalapeno Peppers in moderation can help to reduce and lower your blood pressure, high cholesterol, and prevent the formation of blood clots in your veins.
Having high blood pressure and blood clots can lead to a heart attack and even stroke so by keeping your heart healthy you prevent yourself from getting heart disease and heart attacks and strokes.
Just avoid eating too many Jalapenos as they could lead to Ulcers and other stomach issues but you'll usually know when you've eaten too many Jalapenos because your stomach will begin to hurt which means you should slow down on the amount of Jalapeno peppers you eat.
The Jalapeno Peppers contain an ingredient called capsaicin which is where the heart health benefits come from and the capsaicin has also been known to help prevent cancer and some other diseases as well.