Which type of fat is most associated with promoting heart disease?

Saturated fats are primarily found in animal products and some plant oils, and they have been linked to increased levels of LDL cholesterol in the blood. Elevated LDL cholesterol is a significant risk factor for the development of heart disease, as it can lead to the formation of plaque in arteries, narrowing them and potentially leading to cardiovascular events such as heart attacks and strokes.

While trans fats, found in partially hydrogenated oils, also pose a high risk for heart disease due to their negative effects on blood cholesterol levels, saturated fats have been a longstanding focus in dietary guidelines for their association with heart health. Reducing saturated fat intake is often recommended as part of a heart-healthy diet to lower the risk of cardiovascular disease. Monounsaturated and polyunsaturated fats, in contrast, are generally considered to be more beneficial for heart health, as they can help improve cholesterol levels when consumed in moderation.