Choose a diet made of nutrient-rich foods. Nutrient-rich (or nutrient-dense) foods are low in sugar, sodium, starches, and bad fats. They contain a lot of vitamins and minerals and few calories. Your body needs vitamins and minerals, known as micronutrients. They nourish your body and help keep you healthy. They can reduce your risk for chronic diseases. Getting them through food ensures your body can absorb them properly.