When people have good health, they can live longer than other people who have health problems, such as diabetes, heart attack, leukemia, brain hemorrhage, etc. How to have good health? According to “In Defense of Food: An Eater’s Manifesto,” author Michael Pollan states, “Eat food. Not too much. Especially plants”, (1) is the golden rule for every person who wants to have a healthy body and a healthy life. If people want to preserve their health away from diseases, do not eat too much bad food, fatty foods, canned food and eat fewer animal products. Also, people need to eat more vegetables, fruits and grains, because this can avoid cholesterol, heart disease, hypertension and many other diseases. Also, for older people, having good health is really important for them and their families too. When older adults are in good health, they have more time to enjoy daily life with their children, grandchildren or even older friends. They can do many meaningful activities, such as dancing, painting, playing chess, traveling, helping people and much more. According to the article “25 Older People Achieving Extraordinary Feats,” written by David Pegg, as people get older, they will try to do many interesting activities that they love and have never done before. For example Mohr Keet, a 96 year old man,