Of the types of fat saturated, polyunsaturated, monounsaturated and trans fat saturated fat and trans fat increase the risk of coronary artery disease by raising blood cholesterol levels.

CNN: updated

It's possible that health conditions related to stress such as anxiety, depression, and isolation from friends and family may be linked to heart disease, but there's no evidence they're linked to high blood pressure.

CNN: Stress and high blood pressure: What's the connection?