1Epidemiology of gallbladder stone disease
Section snippets
The importance of gallstone disease and the impact of ethnicity
Gallstones have been recognized since antiquity, being identified in autopsy studies of Egyptian mummies. Today, gallbladder disease is a frequent problem in developed countries, representing a major health burden.1 An estimated 20–25 million adults in the U.S. are afflicted with gallstones, the most common cause of biliary tract disease in this age group. Gallstone disease is the leading cause of inpatient admissions for gastrointestinal problems.2 Population-based statistics, based on a
Risk factors
Gallstone formation is clearly multifactorial. For any individual, some risk factors are unalterable, such as advancing age, being female and genes/ethnicity. Other factors can be modified, such as obesity, rapid weight loss, diet, drugs and activity. Case-controlled studies (comparing those with versus those without gallstones) have identified associations between key demographic characteristics and the risk of having gallstones. Even when controlled for immutable risk factors (particularly
Summary
The prevalence of gallstone disease has advanced dramatically from the early days of clinical and necropsy studies, with their inherent biases, with the landmark cholecystography survey of Pima Indians in 197013 to the excellent ultrasonographic surveys (accurate, safe and non-invasive) that began predominantly in Europe, especially Italy, in the late 1980s.∗23, 43, 44, 45 Not only did these studies identify the true frequency of cholelithiasis at any point of time (i.e., prevalence), but have
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