Patients (with a gallbladder in situ) who have undergone bariatric surgery and are experiencing rapid weight loss are at high risk of gallstones.[26]Stokes CS, Gluud LL, Casper M, et al. Ursodeoxycholic acid and diets higher in fat prevent gallbladder stones during weight loss: a meta-analysis of randomized controlled trials. Clin Gastroenterol Hepatol. 2014 Jul;12(7):1090-100.
https://www.cghjournal.org/article/S1542-3565(13)01837-5/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/24321208?tool=bestpractice.com
Others at high risk include those receiving parenteral nutrition and those using somatostatin long-term.
Primary prevention starts with preventing gallstones, which entails lifestyle modification: a diet high in fiber, low in saturated fat, and maintenance of a normal body weight, coupled with moderate physical activity.[27]Williams CI, Shaffer EA. Gallstone disease: current therapeutic practice. Curr Treat Options Gastroenterol. 2008 Apr;11(2):71-7.
http://www.ncbi.nlm.nih.gov/pubmed/18321433?tool=bestpractice.com
[28]Aune D, Leitzmann M, Vatten LJ. Physical activity and the risk of gallbladder disease: a systematic review and meta-analysis of cohort studies. J Phys Act Health. 2016 Jul;13(7):788-95.
http://www.ncbi.nlm.nih.gov/pubmed/26901710?tool=bestpractice.com
The evidence for a preventative effect of healthy lifestyle, diet, regular physical activity, and maintenance of an ideal body weight, however, is weak.[29]European Association for the Study of the Liver (EASL). EASL clinical practice guidelines on the prevention, diagnosis and treatment of gallstones. J Hepatol. 2016 Jul;65(1):146-81.
https://www.journal-of-hepatology.eu/article/S0168-8278(16)30032-0/fulltext
Preventative medical therapy employs ursodiol to lower cholesterol saturation in bile and so lessen the short-term risk of stone formation in obese individuals undergoing rapid weight loss through dietary caloric restriction or bariatric surgery.[26]Stokes CS, Gluud LL, Casper M, et al. Ursodeoxycholic acid and diets higher in fat prevent gallbladder stones during weight loss: a meta-analysis of randomized controlled trials. Clin Gastroenterol Hepatol. 2014 Jul;12(7):1090-100.
https://www.cghjournal.org/article/S1542-3565(13)01837-5/fulltext
http://www.ncbi.nlm.nih.gov/pubmed/24321208?tool=bestpractice.com
Ursodiol has limited value for dissolving established gallstones.[30]Venneman NG, Besselink MG, Keulemans YC, et al. Ursodeoxycholic acid exerts no beneficial effect in patients with symptomatic gallstones awaiting cholecystectomy. Hepatology. 2006 Jun;43(6):1276-83.
https://aasldpubs.onlinelibrary.wiley.com/doi/10.1002/hep.21182
http://www.ncbi.nlm.nih.gov/pubmed/16729326?tool=bestpractice.com
This agent is best reserved for the occasional nonsurgical candidate with small gallstones who is truly symptomatic.
Patients with symptomatic gallstones should be offered elective cholecystectomy to prevent development of acute cholecystitis.