Whole grains contribute to a healthy diet by providing essential nutrients such as fiber, vitamins, and minerals. They are linked to a reduced risk of chronic diseases, including heart disease, diabetes, and obesity. The fiber in whole grains aids in digestion, promotes satiety, and helps regulate blood sugar levels. Compared to refined grains, whole grains retain their bran and germ, increasing their nutritional value. Incorporating a variety of whole grains, such as brown rice, quinoa, and whole wheat bread, can enhance overall dietary quality.