Which type of fatty acid can lower cholesterol levels in the body?

Polyunsaturated fats are beneficial for heart health and can help lower cholesterol levels in the body. These fats are typically found in foods such as fish, walnuts, and sunflower oil. They include essential fatty acids, such as omega-3 and omega-6, which play vital roles in various bodily functions, including reducing inflammation and regulating cholesterol levels. Research indicates that replacing saturated fats in the diet with polyunsaturated fats can lead to a decrease in total cholesterol and LDL (low-density lipoprotein) cholesterol, which is often referred to as "bad" cholesterol.

In contrast, trans fats, commonly found in processed foods, can raise LDL cholesterol levels and lower HDL (high-density lipoprotein) cholesterol, which is considered "good" cholesterol. Saturated fatty acids, typically found in animal products, can also contribute to increased cholesterol levels when consumed in excess. Monounsaturated fats, while healthier than saturated and trans fats, have a more moderate effect on cholesterol levels compared to polyunsaturated fats. Thus, polyunsaturated fats are recognized as the most effective in promoting lower cholesterol levels when incorporated into a balanced diet.