Which dietary modification can help lower LDL cholesterol?

Increasing fiber intake is a dietary modification that can effectively help lower LDL cholesterol levels. Soluble fiber, in particular, binds to cholesterol in the digestive system and prevents its absorption into the bloodstream. Foods high in soluble fiber include oats, barley, beans, lentils, fruits, and vegetables. By facilitating the elimination of cholesterol, fiber can lower overall cholesterol levels, particularly LDL, which is often referred to as "bad" cholesterol due to its association with an increased risk of heart disease.

In contrast, increased saturated fats can raise LDL cholesterol levels, which is counterproductive for cholesterol management. Similarly, increased sugar intake does not support lowering LDL cholesterol and may lead to other health issues, such as obesity and metabolic syndrome. Furthermore, increased trans fats are known to raise LDL cholesterol levels while also lowering HDL cholesterol (the "good" cholesterol), creating a negative impact on cardiovascular health. Therefore, among the options provided, increasing fiber intake is the most effective and beneficial dietary modification for lowering LDL cholesterol.