American Association of Family and Consumer Sciences (AAFCS) Practice Test

Which type of fat is known to lower cholesterol levels?

1. Saturated fats

2. Trans fats

3. Monounsaturated fats

4. Polyunsaturated fats

The correct answer is: Monounsaturated fats

Monounsaturated fats are known to have beneficial effects on heart health, particularly in lowering cholesterol levels. These fats can help reduce levels of low-density lipoprotein (LDL) cholesterol, which is often referred to as "bad" cholesterol, while maintaining or increasing levels of high-density lipoprotein (HDL) cholesterol, known as "good" cholesterol. Foods rich in monounsaturated fats include olive oil, avocados, and certain nuts, which can contribute positively to a healthy diet when consumed in moderation. In contrast, saturated fats and trans fats are generally associated with increasing LDL cholesterol levels and raising the risk of cardiovascular diseases. Saturated fats are commonly found in animal products and some plant oils, while trans fats are often found in partially hydrogenated oils used in processed foods. Polyunsaturated fats, while beneficial in some cases (like omega-3 fatty acids), can also lead to an increase in lower cholesterol levels when consumed in excessive amounts. Thus, among all types of fats, monounsaturated fats are specifically recognized for their role in promoting better cholesterol profiles.