Every person needs food to survive. The study of food and how it affects our bodies is called nutrition. Good nutrition is important for good health. Sometimes older people do not eat healthy foods. This can cause serious health problems such as obesity, under nutrition, or delayed recovery from illness. Food is a source of energy and nutrients. Nutrients are the substances in food that help build and maintain the cells of the body. As we age, we generally become less active. Our bodies, therefore, require less energy from food although we still need lots of nutrients. So the food we eat should be high in nutrients. This book tells you how to help older people get the nutrients that they need to maintain or enhance their quality of life.