Which of the following is NOT considered a primary risk factor for coronary heart disease?

To determine which factor is not considered a primary risk factor for coronary heart disease, it's important to understand what constitutes primary risk factors in cardiovascular health. Age, sedentary lifestyle, and smoking are all well-documented primary risk factors.

Age increases the risk because the likelihood of coronary artery disease rises as individuals get older, due to a combination of factors such as the buildup of plaque in arteries over time and the natural aging of heart tissue. A sedentary lifestyle contributes to the clogging of arteries and negatively impacts overall cardiovascular health, raising the risk of heart disease substantially. Smoking is another critical risk factor, as it damages blood vessels and lowers oxygen levels in the blood, leading to heart issues.

Obesity, while it is significant and does increase the risk of coronary heart disease, is often considered a secondary risk factor. It can lead to other conditions that are primary risk factors, such as high blood pressure and diabetes. Thus, while obesity is related to coronary heart disease, it does not stand on the same level as the other factors listed when categorizing risk.