The soybean is set apart from other plant foods because of its high-quality protein content, according to the Mayo Clinic. Soy also contains fiber and isoflavones. Isoflavones are a type of plant-derived compound called phytoestrogen that have estrogenic activity. The dietary intake of soy may reduce cholesterol and lower the risk of heart disease. Additionally, soy may have a number of positive effects on the skin. As a skin care ingredient, soy is purported to diminish wrinkles, reverse sun damage and even tighten sagging skin.
