Gram Research analysis of over 9,000 American adults found that higher vitamin B6 intake is linked to lower gallstone risk, with a 10% reduction in risk for each additional milligram consumed daily. The protective effect became significant at intake levels above 1.66 milligrams per day, particularly among younger adults and those who exercise regularly. While this cross-sectional study shows a clear association, it cannot prove that B6 prevents gallstones, and more research is needed to confirm whether increasing B6 intake directly reduces gallstone formation.
A new study of over 9,000 American adults found that people who eat more vitamin B6 have fewer gallstones. Researchers looked at data from 2017 to 2023 and discovered that getting enough B6 from foods like chicken, chickpeas, and bananas was linked to lower gallstone risk. The protective effect was strongest in younger adults and those who exercise regularly. While this doesn’t mean B6 is a cure, it suggests that eating foods rich in this vitamin might be one way to protect your gallbladder health.
Key Statistics
A 2026 cross-sectional analysis of 9,273 US adults from the National Health and Nutrition Examination Survey found that vitamin B6 intake was inversely associated with gallstone prevalence, with a 10% reduction in gallstone risk per milligram increase in daily B6 consumption.
According to research reviewed by Gram, approximately 10.47% of US adults in the 2017-2023 NHANES survey reported gallstones, and the protective effect of vitamin B6 became statistically significant at intake levels exceeding 1.66 milligrams per day.
A 2026 study of 9,273 American adults found that younger adults aged 20-39 showed the strongest association between higher vitamin B6 intake and lower gallstone risk, suggesting age may modify the protective effect.
The Quick Take
- What they studied: Whether eating more vitamin B6 from food is connected to having fewer gallstones in American adults
- Who participated: 9,273 adults from across the United States who participated in a national health survey between 2017 and 2023. The group included people of different ages, races, income levels, and health conditions.
- Key finding: People who consumed more vitamin B6 had about 10% lower risk of gallstones for each additional milligram of B6 they ate daily. The benefit became clearer when people ate more than 1.66 milligrams of B6 per day.
- What it means for you: Eating foods rich in vitamin B6 may help protect your gallbladder, but this study doesn’t prove B6 prevents gallstones. Talk to your doctor before making major dietary changes, especially if you have gallbladder problems or take medications.
The Research Details
Researchers used information from the National Health and Nutrition Examination Survey, a large government program that tracks the health of Americans. They looked at data collected between 2017 and 2023 from over 9,000 adults. Each person answered questions about their diet and whether they had ever been told they had gallstones. The researchers then used statistical tools to see if there was a connection between how much vitamin B6 people ate and whether they had gallstones. They adjusted their analysis to account for other factors that might affect gallstone risk, like age, weight, exercise habits, and existing health conditions like diabetes.
This research approach is important because it looks at real-world eating patterns in a large group of people rather than testing B6 in a lab. By studying many people across different backgrounds and health situations, researchers can spot patterns that might help prevent a common health problem. The study also looked at whether certain groups of people benefit more from B6, which could help doctors give better advice to their patients.
This study has some strengths and some limitations to keep in mind. The large sample size of over 9,000 people makes the findings more reliable than a smaller study would be. The researchers carefully adjusted for many factors that could affect the results. However, because this is a cross-sectional study, it shows a connection between B6 and gallstones but cannot prove that B6 actually prevents gallstones. The data also relied on people remembering what they ate and whether they had gallstones, which can sometimes be inaccurate.
What the Results Show
About 1 in 10 adults in the study (10.47%) reported having gallstones. When researchers looked at vitamin B6 intake, they found that for every additional milligram of B6 people ate daily, their gallstone risk dropped by about 10%. This relationship appeared to be linear, meaning more B6 was consistently linked to lower risk. The protective effect became statistically significant when people consumed more than 1.66 milligrams of B6 per day, which is close to the recommended daily amount for adults. The connection held true even after accounting for age, sex, race, income, weight, exercise, and medical conditions like diabetes and high blood pressure.
The study found that certain groups seemed to benefit more from higher B6 intake. Younger adults aged 20 to 39 showed a stronger protective effect. Non-Hispanic White adults, people with higher incomes, those with diabetes or high blood pressure, and people who exercised vigorously all showed stronger associations between B6 and lower gallstone risk. These findings suggest that the relationship between B6 and gallstone prevention may depend on a person’s age, background, and overall health status.
This is one of the first large population studies to examine the link between dietary vitamin B6 and gallstone risk in American adults. Previous research in laboratories suggested that B6 might help control cholesterol levels and reduce inflammation, both of which are connected to gallstone formation. This new study provides real-world evidence that supports those laboratory findings. However, more research is needed to confirm whether B6 actually prevents gallstones or whether other factors explain the connection.
This study cannot prove that vitamin B6 prevents gallstones because it only shows a connection at one point in time. People reported their own diet and gallstone history, which may not be completely accurate. The study included mostly people who participated in health surveys, so the results may not apply to everyone. Additionally, the researchers could not account for all possible factors that might affect gallstone risk, such as genetics or certain medications. Finally, the study design means we cannot determine whether B6 causes the lower gallstone risk or whether people who eat more B6 simply have other healthy habits that protect their gallbladders.
The Bottom Line
Based on this research, eating foods rich in vitamin B6 appears to be associated with lower gallstone risk, particularly when intake exceeds 1.66 milligrams daily. This finding has moderate confidence because it comes from a large, well-designed study but cannot prove cause and effect. Consider including B6-rich foods like chicken, fish, chickpeas, potatoes, and bananas in your regular diet as part of a balanced eating pattern. However, do not take high-dose B6 supplements specifically to prevent gallstones without consulting your doctor, as this study examined dietary intake, not supplements.
This research is most relevant for adults interested in gallstone prevention, particularly younger adults aged 20 to 39 who showed the strongest protective effect. People with risk factors for gallstones, such as those with diabetes or high blood pressure, may find this information especially useful. People who already have gallstones should discuss dietary changes with their doctor before making changes. This research is less directly applicable to children or to people with severe gallbladder disease, who need individualized medical advice.
If you increase your vitamin B6 intake through food, you would not expect immediate changes to gallstone risk. Gallstone formation develops over months to years, so any protective benefit from dietary changes would likely take time to appear. Maintaining consistent B6 intake over the long term, as part of an overall healthy lifestyle, is more important than short-term changes. If you have concerns about gallstone risk, discuss a long-term dietary strategy with your healthcare provider.
Frequently Asked Questions
Does vitamin B6 prevent gallstones?
Research shows a connection between higher B6 intake and lower gallstone risk in adults, with a 10% reduction per additional milligram daily. However, this study cannot prove B6 prevents gallstones, only that they are associated. More research is needed to confirm a direct protective effect.
How much vitamin B6 do I need to eat to protect my gallbladder?
The study found protective effects at intake levels above 1.66 milligrams per day, which is close to the recommended daily amount for adults. Good sources include chicken, fish, chickpeas, potatoes, and bananas. Consult your doctor about your specific needs.
What foods are high in vitamin B6?
Excellent B6 sources include chicken breast, salmon, tuna, chickpeas, potatoes, bananas, and sunflower seeds. A 3-ounce serving of chicken provides about 0.5 milligrams of B6. Including these foods regularly in your diet can help you meet the 1.66 milligram threshold identified in this research.
Should I take vitamin B6 supplements to prevent gallstones?
This study examined dietary B6 from food, not supplements. Before taking B6 supplements specifically for gallstone prevention, consult your doctor. High-dose supplements may carry risks and are not proven to prevent gallstones based on this research.
Who benefits most from eating more vitamin B6?
The study found stronger protective effects in younger adults aged 20-39, non-Hispanic Whites, people with higher incomes, those with diabetes or high blood pressure, and vigorous exercisers. However, everyone may benefit from adequate B6 intake as part of a healthy diet.
Want to Apply This Research?
- Track daily vitamin B6 intake in milligrams from food sources, aiming for at least 1.66 mg daily. Log foods like chicken breast, salmon, chickpeas, potatoes, and bananas to monitor whether you’re meeting this threshold consistently.
- Add one B6-rich food to your daily meals: include chicken or fish at lunch, chickpeas in a salad, or a banana as a snack. Use the app to identify which B6-rich foods you enjoy most and build them into your regular eating pattern.
- Track B6 intake weekly and note any changes in digestive health or energy levels over 2 to 3 months. If you have a family history of gallstones or existing risk factors, share your B6 tracking data with your doctor during annual checkups to discuss whether dietary changes are helping.
This research shows an association between vitamin B6 intake and gallstone risk but does not prove that B6 prevents gallstones. This article is for educational purposes and should not replace professional medical advice. If you have gallstones, a family history of gallbladder disease, or are considering significant dietary changes, consult your healthcare provider before making changes. Do not take high-dose vitamin B6 supplements without medical supervision. Individual nutritional needs vary based on age, health status, and medications.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.