A diet rich in fruits and vegetables provides vitamins and minerals, which are important for supporting growth and development, and for optimal immune function in children. High daily intakes of fruits and vegetables among adults are associated with lower rates of chronic diseases such as heart disease, stroke, high blood pressure, diabetes, and possibly some types of cancers. Emerging science suggests fruit and vegetable consumption may help prevent weight gain, and when total calories are controlled may be an important aid to achieving and sustaining weight loss.