We all know that plant foods are good for us. They contain loads of fiber, vitamins, minerals, and phytochemicals that keep our bodies fueled with the essential components for optimal health. Some of the beneficial phytochemicals are well known such as lycopene and resveratrol; others are more obscure, like plant sterols and stanols, which InsideTracker recommends. So what are they? And why are they recommended for optimizing cholesterol?