Whole grains, such as brown rice, quinoa and whole oats, are known to have significant health benefits. According to WebMD, they are full of nutrients including protein, fiber, B vitamins, antioxidants, and various minerals. A whole grain diet can reduce the risk of heart disease, type 2 diabetes, obesity, some cancers, and may improve bowel health by helping to maintain regular bowel movements and promote growth of healthy bacteria in the colon. However, only 10% of Americans eat the daily recommendation of at least three servings a day.