US-based heart transplant cardiologist warns why the second is failing

The truth is, the second heart is failing not because of disease but because of disuse. Long sitting hours at desks, hours in cars, and evenings spent on couches quietly damage this calf pump. As muscles weaken with age, blood return slows down, swelling starts, and the chest heart is forced to work harder. The result? Rising blood pressure, fatigue, and a higher risk of heart failure. Unlike chest pain, this decline makes little noise, and that silence is dangerous.