Patients with lung cancer should not eat more sauerkraut, pickles and bacon: because they are easy to get moldy in the production process, which often contains carcinogenic molds and carcinogenic nitrosamines. Avoid smoking and foods with high fat content. Eating too much fat can lead to weight gain. Excessive fat will lead to changes in body hormones, limit the effectiveness of immune monitoring, affect the metabolic pattern of cells, and increase the excretion of magnesium in the body. These factors will promote the occurrence of tumors. Such as pork, fat, butter, etc.