Rheumatic diseases are damage to the body caused by abnormally increased immune function, and obesity can increase the level of leptin in the body, further enhancing immunity and causing greater damage to the body, which is an important reason why the disease is not easily controlled. In addition, weight gain is also a major factor in joint damage, especially weight-bearing joint damage, so dieting and weight loss is an important part of the treatment of our disease. 1, the goal of weight loss should lose weight to the standard weight, middle-aged and elderly people can slightly exceed the standard weight, but not more than 20% of the standard weight. Standard weight calculation method: standard weight (kg) = height (cm) – 105 2, the way to eat Advocate eating breakfast, change the habit of not eating breakfast. Lunch in moderation, should not overeat. Dinner less or no food. 3, the type of eating staple food should be strictly controlled, fruit, vermicelli and potatoes treated as staple food, control of staple food is the key to weight loss success or not. Eat 1 pound of vegetables every day, eat more of several kinds, with different colors of vegetables. Quality protein such as meat, eggs and milk should be sufficient. Avoid immune-enhancing foods and health supplements: such as winter and spring herbs, royal jelly and ginseng herbs, etc. 4.How much is the right amount of food to eat every day? (Most people think that weight loss will cause malnutrition, but in fact, too much food not only increases the burden on the internal organs, but also keeps the weight above and below the standard weight, which is an important part of a healthy life and does not cause nutritional deficiency. Every morning weighing is a simple and easy way to determine the amount of food: note that you should wear the same clothes to weigh after washing, and then determine whether the amount of food eaten the previous day is appropriate, such as weight did not increase, indicating that the amount of food eaten is appropriate, can not take whether there is hunger to judge, and over time will know how much should eat appropriate.