Roger G Nissen M.D.

Enlarged heart or cardiomegaly is an indication of an underlying condition rather than a disease in itself. Enlargement makes the heart work harder than normal and weakens the heart muscles after a period of time. An enlarged heart has a number of causes including hypertension and coronary artery...

Blood flows continuously through blood vessels and supplies nutrients and oxygen to different parts of the body. At the site of an injury, a blood clot prevents excess bleeding. Under normal conditions, blood clots are lifesaving. When the clot is formed as a part of normal repair process in the...

A new study has show that men who do not have children are more likely to die from a heart complication or condition, when compared to men who did have children. In this study, the researchers followed more than 135,000 older men for a decade to observe the impact of fatherhood on health. Study...

The New England Journal of Medicine recently published research linking height and coronary artery disease through the study of genetics. Doctors have known since the 1950s about the link between short stature and coronary artery disease, “but the reason behind this really hasn’t been completely...

Cardiac ablation is a procedure used for atrial fibrillation (a-fib) treatment, which is an irregular beating of the heart. Doctors may recommend the procedure when other methods of treatment such as drugs and heartbeat reset aren’t successful.If atrial fibrillation, or an irregular heart rate,...

Too Much Sitting May Increase the Chance of Dying “Spending too much time sitting may increase the odds of dying due to any cause”, says a new study published in the Archives of Internal Medicine. The chances of dying from any cause increases by as much as 40% in people who spend a lot of time...