Heart enzymes are proteins that leak into your bloodstream when your heart muscle is damaged. This damage may result from a heart attack, severe angina, heart failure, or even repeated strain on the heart from issues like high blood pressure or diabetes. Your heart cells release enzymes when they suffer. https://www.saaoldelhi.com/blogs/what-are-heart-enzymes-and-how-do-they-help-in-the-early-detection-of-heart-disease/