1 The right side of the heart receives oxygen-poor blood from body tissues and pumps it to the lungs where it picks up oxygen and gets rid of carbon dioxide. 2  The blood vessels that carry blood to and from the lungs form the pulmonary circuit.
According to the Dietary Guidelines for Americans 2015-2020, a healthy eating plan: 1  Emphasizes fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products. 2  Includes lean meats, poultry, fish, beans, eggs, and nuts. 3  Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.
About Healthy Nutrition. Planning balanced Meals. Principles of Healthy Eating. 1  Eat a variety of different foods. 2  No one food contains all the proteins, carbohydrates, fats, vitamins and minerals you need for good health, so you have to eat a range of different foods. 3  Eat staple foods with every meal.