What risk factor can contribute to the narrowing of coronary arteries?

High cholesterol is a significant risk factor that can contribute to the narrowing of coronary arteries, a condition known as atherosclerosis. When there are elevated levels of cholesterol in the blood, it can lead to the accumulation of fatty deposits, or plaques, on the arterial walls. This buildup can cause the arteries to become narrow and less flexible, resulting in restricted blood flow to the heart muscle. Over time, as these plaques grow, they can further narrow the coronary arteries and potentially lead to serious cardiovascular events such as heart attacks or angina.

In contrast, regular exercise, a balanced diet, and non-smoking are all associated with heart health and typically contribute positively by helping to manage cholesterol levels, maintain healthy blood pressure, and improve overall cardiovascular fitness. These factors work together to reduce the risk of developing heart disease and help prevent the narrowing of coronary arteries.