1, 30 to 50 years old: gastrointestinal diseases According to the World Health Organization, the incidence of gastric disease is as high as 80%, and the onset of the trend of youth. Now the number of gastrointestinal disease patients in the 30s and 40s is increasing, with gastric disease (indigestion, chronic gastritis, etc.), inflammatory bowel disease (such as ulcerative colitis, etc.) is most common. Irregular diet, love of smoked, high salt, spicy food, and love of alcohol and tobacco, all these bad habits can damage the normal function of the gastrointestinal tract, seriously damage the gastric mucosa, leading to gastrointestinal diseases, and also increase the chance of cancer. Therefore, people in this age group should especially protect their intestines and stomachs. In addition to a regular diet, adhere to the principle of “eat well in the morning, eat full at lunchtime, eat less at night”, should also eat less or no pickles, smoked and fried food, eliminate moldy food, quit smoking and limit alcohol, eat more fresh fruits and vegetables and coarse grains, potatoes and other foods rich in dietary fiber. In addition, exercise in moderation and develop the habit of regular bowel movements every day. If symptoms such as upper abdominal discomfort, vague pain in the heart, feeling of fullness after eating, loss of appetite, weight loss, and black tarry stools appear, you should seek medical attention early. 2, 40 ~ 60 years old: bones Research has proven that the strongest period of human bones in 20 ~ 40 years old. Once you pass the age of 40, the rate of bone loss exceeds the rate of formation, the amount of bone begins to decline, and the bone gradually becomes brittle. In fact, bone joints degenerate from the age of 30. In particular, the knee, hip, back, neck and spine are prone to pain, inflammation or lesions. By the age of 40, a person’s joint cartilage degenerates, joint gaps become narrower and narrower, or even gradually disappear, and degenerative arthritis is the most common cause of knee pain at this stage. Qi Qiang reminds that modern people should pay attention to exercise, walk or swim more often to avoid excessive exercise on the spine and joint wear and tear, and usually get more sunlight. In addition, it is recommended that people over the age of 40 should have their bone density tested regularly so that preventive and curative measures can be taken as early as possible. 3.50~70 years old: Tumor After 50 years old is the age when cancer is concentrated to the human body. With age, older people are exposed to more cancer-causing environment, and the accumulation of carcinogenic factors such as air pollution and occupation will easily lead to cell cancer, and some cancers caused by poor lifestyle will gradually show their “hideous” faces. After the age of 50, human hormone level starts to decline and immune function gradually decreases, so cancer genes or mutated cells that could be controlled by immune system will gradually become cancerous. Some cancers may be latent years ago and develop only after the age of 40 to 50. Therefore, cancer prevention should be done at least 20 years earlier. In other words, after 35 years old, you should have a cancer prevention checkup every year, especially for people with family history of tumor. Specifically, those who have smoked for more than 10 years should have a spiral CT examination every year; those who have atrophic gastritis and other gastric diseases should have a gastroscopy every year; those who have a family history of colon cancer are recommended to check stool occult blood and have a colonoscopy; men over 35 should be screened for prostate cancer, and women should be screened for cervical cancer and breast cancer. 4, 50 to 80 years old: heart disease and stroke Many people’s heart and brain and other important organs work under high load for years, coupled with a variety of bad habits, and usually do not pay attention to maintenance, blood vessels in the age of 50 has gradually hardened, the walls of the blood vessels covered with plaque. At this time to the body to increase the size, cardiovascular and cerebral blood vessels are very easy to acute blockage, sudden stroke, myocardial infarction and other acute diseases. Dietary prevention is most important. First, you should eat less or no food high in salt, fat and sugar; second, change the bad habit of being sedentary and increase exercise. Brisk walking to prevent cardiovascular disease and improve cardiorespiratory function are helpful, walking 40 minutes to an hour a day; again, no matter how busy, must find time for regular medical checkups, pay attention to weight, waist circumference, blood pressure, blood lipids, blood sugar and other indicators, but also to remind themselves that it is not too late to start quitting smoking. In addition to this, once people around the age of 50 feel chest tightness, shortness of breath, anterior chest pain, or a sudden decline in physical strength, extreme weakness, do not carry on, must be vigilant, go to the hospital for examination, so as not to miss the time to save. 5.70~90 years old: dementia Several studies have found that the incidence of dementia will gradually increase after the age of 65, and the age of 70 or 80 is a more concentrated stage of onset. Risk factors of cardiovascular diseases such as hypertension, diabetes, heart disease smoking and alcohol abuse are also important factors triggering Alzheimer’s disease. Although people cannot change their age, gender or genetic background, actively controlling these risk factors can not only prevent heart disease and stroke, but also prevent or reduce the harm caused by Alzheimer’s disease. In addition, the more the brain is used, the more it lives. Older adults must do more mental exercises, maintain lifelong learning and exercise, talk to more people, attend senior college, play cards with others, read and write more, etc. It should be reminded that Alzheimer’s disease is difficult to detect, so children should pay more attention to it. If they find that their parents forget what happened in the last few days after being reminded, or if they keep forgetting the previous episodes of TV shows, they should go to the neurology department in time.