A healthy diet is rich in foods with high nutritional value, providing your body with the vitamins, minerals and other food nutrients it needs to protect against disease and maintain a healthy weight. To identify healthy foods, it's important to read nutrition labels and know the source of your food. Products advertised as whole-grain, organic or fortified may not necessarily be healthy for you. Find out how to get the most health value from various fruits, nuts, spices, oils and vegetables -- and learn which types of red meat and processed foods to avoid -- with expert advice from Sharecare.