3. Congestive heart failure

The most common signs of congestive heart failure include swelling in your leg and constantly feeling short of breath. It occurs when your heart gets abnormally weak, or abnormally stiff and is no longer capable of pumping blood through your body effectively.

4. Cardiomyopathy

Another disease that weakens the ability of the heart to pump blood through the body effectively. It impairs your heart muscles, it can cause them to become either abnormally stick, too thick or too large.

5. Cardiac arrest

It is a sudden spasm, which renders your heart entirely capable of functioning. Imagine your heart as being shut down entirely.

6. Coronary artery disease

If your daily diet has a high rate of cholesterol, it will clog in your arteries and cause them to narrow down over time. Now, since the arteries are responsible for supplying the blood to your heart, when they narrow down, it increases the risk of the development of a blood clot that can block the blood from entering your heart. This blockage eventually leads to a heart attack.

7. Endocarditis

This ailment is commonly caused by a severe infection in your heart valves, and it causes inflammation to spread in the heart valves or the lining of your heart.