Nowadays, more and more people are suffering from cancer. What exactly causes the high incidence of cancer? Stomach Stomach cancer is the 4th most common cancer in the world, and two out of every three cases are in men. Sharing meals also increases the chance of spreading H. pylori, the direct cause of stomach cancer. “As a result, some even classify stomach cancer as an infectious disease.” Lungs Regardless of gender, at the top of the list is lung cancer. Why are the lungs so vulnerable? “In terms of the current analysis of cancer-causing causes, there are two main points, the first is smoking. According to statistics, 30% of tumor incidence is related to long-term smoking, the most closely related of which is lung cancer. In addition, because carcinogenic substances can be absorbed through the lungs and cause systemic harm, it can induce laryngeal cancer, esophageal cancer, oral cancer, bladder cancer, kidney cancer, pancreatic cancer and so on. The second is environmental pollution. Relevant data show that air pollution is one of the causes of inducing lung cancer.” Experts say that environmental pollution is no less harmful to people’s lungs than smoking. Breast Breast cancer is the most common cancer among women in the world. The main factors for its occurrence are: eating high-fat and high-calorie foods, mental stress, late marriage and late childbirth, etc. Liver Liver cancer is the 6th most common cancer in the world. There is evidence that “hepatitis B virus”, consumption of aflatoxin-contaminated cereals and legumes, and long-term alcohol consumption are the direct causes of liver cancer. Esophageal Cancer Esophageal cancer is the 8th most common cancer in the world. The main cause of esophageal cancer is the preference for hot food, such as drinking hot tea. In addition, factors such as smoking, obesity, and consumption of processed meats are direct triggers. Gastric acid reflux is also a risk factor for increasing esophageal cancer. Colon This is the 3rd most common cancer in the world. Red meat, heavy alcohol consumption (men only), high-temperature fried foods, and frequent stool holding are all possible causes of colorectal cancer. In addition, inflammatory bowel disease can also increase the risk of colon cancer. Bladder Bladder cancer is the 10th most common cancer in the world. Studies have shown that arsenic in drinking water is one of the causes of bladder cancer. In addition, holding your urine in often can increase the risk of this cancer. Pancreatic Cancer Pancreatic cancer is the 13th most common cancer in the world and represents the “disease of affluence” among cancers, which can be caused by obesity and diabetes. Lymphoma Cancers of the lymphatic and hematopoietic system include lymphoma, leukemia, and multiple myeloma. This group of cancers is ranked as the 6th most prevalent cancer in the world along with liver cancer. Environmental pollution, viral infections and obesity are the causes of this cancer. Cervical and ovarian Cervical and ovarian are the 2nd and 7th most common cancers in women in the world, respectively. The causes are multifaceted, such as staying up late causing endocrine disruption and starting sexual life too early.