Causes of Gallbladder Cancer
The causes of gallbladder cancer are not fully understood, but several risk factors are associated with the development of this disease. Gallbladder cancer usually begins in the glandular cells that line the inside of the gallbladder, a type known as adenocarcinoma.
Gallstones and Chronic Inflammation
The most significant risk factor is the presence of gallstones, which cause long-term irritation and inflammation (chronic cholecystitis)
This ongoing damage to the gallbladder lining may lead to cellular changes and, eventually, cancer
However, while gallstones are common, only a small number of people with gallstones develop cancer
Gallbladder Polyps
Polyps are growths that protrude from the gallbladder wall
Larger polyps (especially those over 1 cm) carry a higher risk of becoming cancerous
Individuals with polyps and other risk factors may be advised to consider gallbladder removal
Age and Gender
Gallbladder cancer is more common in people over 65
Women are more frequently affected than men, possibly due to hormonal factors or higher gallstone incidence
Ethnicity and Geography
Higher rates of gallbladder cancer are seen in:
Indigenous populations of the Americas
Northern India and Pakistan
Parts of Eastern Europe and East Asia
These patterns may reflect genetic predisposition and dietary or environmental influences.
Genetic and Medical Conditions
Primary sclerosing cholangitis (PSC) – a liver disease linked to bile duct cancer and gallbladder cancer
Porcelain gallbladder – calcification of the gallbladder wall, often due to long-standing inflammation
Family history of gallbladder cancer also slightly increases risk
Lifestyle and Environmental Factors
Obesity, high-fat diets, and sedentary lifestyle are possible contributing factors
Exposure to certain industrial chemicals may increase risk in rare occupational settings
Causes of Gallbladder Cancer
Understanding the causes of gallbladder cancer is essential in identifying at-risk individuals and making informed decisions about preventive care and early screening.
