Write a composition about what to eat is good for your health, 100 words.

In modern society, science and technology are developed and materials are extremely rich. In order to cure diseases and live a long and healthy life, people continue to study medicine and diet, and finally find that meat does more harm than good to human health, and the so-called vegetarian food such as whole grains, vegetables and fruits is the most natural and harmless healthy food for human beings. Modern medical research also shows that human digestive system is similar to cattle, horses and sheep, and it is more suitable for vegetarianism. The treasure in vegetarian food is a delicious food that is beneficial to human health. Vegetarianism brings people a simple, safe, pure and resilient attitude towards life, being as light as a swallow and full of vitality! It should be said that vegetarianism and vegetarianism are not unfamiliar topics to us, and they are or will soon affect everyone's life. Especially in recent years, SARS, foot-and-mouth disease, mad cow disease, bird flu and other terrible plagues have constantly attacked human beings, warning the traditional lifestyle and eating habits of human beings. This also makes me believe that human beings are essentially vegetarians rather than carnivores. As the old saying goes, illness comes from the mouth, and disaster comes from the mouth. In fact, most human diseases are caused by diet. Therefore, if people can control and balance their diet, they can reduce many physiological diseases. Everyone should know that vegetables and fruits contain a variety of vitamins, which are rich in nutrition and low in heat energy, which is beneficial to digestion. People who eat more meat and calories, especially those over 50 years old, are prone to obesity, arteriosclerosis, hypertension and diabetes, so people over 50 years old had better be vegetarian and stay healthy. Shelley, an English poet, wrote: "Any definite experiment shows that all kinds of physical or mental diseases can be alleviated by vegetarian diet and drinking pure water." Bernard Shaw, an English playwright, became a vegetarian in his early twenties at the age of 94. He once said, "For 50 years, a bunch of doctors assured me that if I didn't eat some meat, I would starve to death." But he lived healthily into his 90 s! The benefits of being a vegetarian are well known, but an incorrect diet is also harmful, so we need to learn to be a healthy vegetarian. Vegetarians should pay more attention to nutrition collocation. It is best to accept eggs and milk, that is, not strictly vegetarian to avoid malnutrition, especially for children, pregnant women and nursing mothers. Vegetarians should exercise regularly, drink plenty of water and get some sunshine to help the body use vegetarian nutrition more effectively.