There is no such thing as gallbladder nodules, here it would be gallbladder stones. Heredity, disorders of lipid metabolism, disorders of gallbladder dynamics, low-fiber, high-energy diets, bacterial infections, and medications are factors that contribute to gallbladder stones. 1．Lithogenic genes and heredity are causative for gallbladder stones, and the interaction of many different and unknowable genes and environments can lead to the development of gallbladder stones. 2. Lipid metabolism disorders, lipid transport, secretion and metabolism is also an important factor in the formation of gallstones, hypercholesterolemia can lead to the formation of bile pigment stones. 3. Disturbances in gallbladder dynamics, gallbladder contraction under physiological conditions by hormonal and neural co-regulation, gallbladder contraction of the most important medium is cholecystokinin (CCK). In patients with cholelithiasis, the fasting volume of the gallbladder increases as a result of reduced mRNA expression of the CCK receptor, which ultimately leads to gallbladder cholestasis and gallbladder stone formation. 4. Low-fiber, high-energy diets increase bile cholesterol saturation and facilitate stone formation. 5. Bacterial infection, on the one hand, the dysfunction and gallbladder inflammation caused by bacterial infection is a possible mechanism to induce cholesterol stones; on the other hand, the formation of cholesterol stones can be caused by a low-fiber, high-energy diet. On the other hand, the formation of cholesterol stones may be related to bacterial metabolites. 6. Certain drugs can lead to gallbladder stone formation, such as ceftriaxone, birth control pills, etc.; rapid reduction of body mass such as irrational weight loss methods, may be prone to lead to gallbladder stone formation. Obesity, fatty liver, diabetes mellitus, hypertension, hyperlipidemia, lack of exercise, not eating breakfast and family history of gallbladder stones may be factors in the development of gallbladder stones.