Calcium and vitamin D supplements do not improve quality of life or reduce symptoms in women over 50 with kidney stones, according to a 2026 study of 734 women from 16 North American hospitals. Gram Research analysis found that women taking these supplements reported similar pain levels and daily functioning as those taking no supplements, suggesting these pills should be chosen based on bone health needs rather than hopes of kidney stone relief.
A new study of 734 women over 50 with kidney stones found that taking calcium and vitamin D supplements did not improve their quality of life or reduce stone-related symptoms. Researchers from 16 North American hospitals tracked women taking these supplements between 2014 and 2020. According to Gram Research analysis, about half the women took no supplements, while others took calcium alone, vitamin D alone, or both together. The results showed no meaningful difference in how these women felt or their daily functioning, regardless of which supplements they used. This suggests that women with kidney stones should decide whether to take these supplements based on bone health needs, not on hopes of feeling better from their stones.
Key Statistics
A 2026 study of 734 women over 50 with kidney stones found that 51.9 percent took no calcium or vitamin D supplements, while 49.1 percent took one or both supplements, yet quality of life scores showed no significant differences between groups.
Among 734 women with kidney stones tracked across 16 North American hospitals from 2014 to 2020, women taking calcium supplements alone scored only 4.06 points higher on quality of life measures compared to those taking no supplements, a difference too small to be meaningful.
A 2026 analysis of 734 women over 50 with kidney stones found that 28.1 percent took vitamin D alone and 14.0 percent took both calcium and vitamin D, but neither group reported better quality of life than women taking no supplements.
The Quick Take
- What they studied: Whether taking calcium pills and vitamin D pills helps women over 50 with kidney stones feel better and have a better quality of life
- Who participated: 734 women aged 50 and older who had kidney stones and were being treated at 16 hospitals across North America between 2014 and 2020
- Key finding: Taking calcium supplements, vitamin D supplements, or both together did not improve how women with kidney stones felt or their daily quality of life compared to taking no supplements
- What it means for you: If you have kidney stones and are over 50, you should not expect these supplements to make your stone symptoms better. Talk to your doctor about whether you need these supplements for bone health instead
The Research Details
Researchers looked at information they had already collected from 734 women over 50 who had kidney stones. They divided the women into four groups based on what supplements they were taking: no supplements, calcium only, vitamin D only, or both calcium and vitamin D together. They then compared how each group felt using a special questionnaire called the Wisconsin Stone Quality of Life survey, which asks about pain, daily activities, and overall well-being. The researchers adjusted their results to account for differences between the women, such as their age, other health conditions, and the size and type of their kidney stones.
This approach is important because it looks at real-world information from actual patients rather than just testing supplements in a lab. By studying women who were already taking these supplements for their own reasons, researchers could see whether the supplements actually helped people feel better in their everyday lives. The study was large enough and included women from many different hospitals, which makes the results more trustworthy
This study has several strengths: it included a large number of women, used information from multiple hospitals across different regions, and carefully measured quality of life using a validated questionnaire. However, the study was observational, meaning researchers watched what people were already doing rather than randomly assigning them to take supplements or not. This means we cannot be completely certain that the supplements themselves caused the results, since women who took supplements might have been different from those who did not in ways that were not measured
What the Results Show
Among the 734 women studied, 381 (about 52 percent) took no supplements, 44 (about 6 percent) took calcium alone, 206 (about 28 percent) took vitamin D alone, and 103 (about 14 percent) took both calcium and vitamin D. When researchers compared quality of life scores between groups, they found no significant differences. Women taking calcium alone had scores that were 4.06 points higher than those taking nothing, but this difference was so small it could easily have happened by chance. Women taking vitamin D alone had scores that were essentially the same as those taking nothing. Women taking both supplements together had scores only 3.29 points higher, which again was not a meaningful difference. The researchers also looked at specific areas of quality of life, such as pain levels, ability to work, and emotional well-being, and found no significant differences between any of the groups.
The study examined whether different types of kidney stones or different patient characteristics might change the results, but no subgroup showed a benefit from supplementation. The findings were consistent across different age ranges, different stone types, and different levels of kidney stone severity. This suggests that the lack of benefit from these supplements applies broadly to women over 50 with kidney stones, not just to specific subgroups
Previous research has shown that calcium and vitamin D are important for bone health in older women, and many doctors recommend these supplements to prevent osteoporosis and fractures. However, there has been limited research on whether these supplements specifically help people with kidney stones feel better. This study is one of the first to directly examine this question in a large group of women. The findings suggest that while these supplements may be appropriate for bone health reasons, they should not be expected to improve kidney stone symptoms or quality of life
This study has several important limitations. First, it was observational, meaning researchers could not randomly assign women to take supplements or not, so we cannot be completely certain about cause and effect. Second, women who chose to take supplements might have been different from those who did not in ways that were not measured. Third, the study only included women over 50, so results may not apply to younger people with kidney stones. Fourth, the study looked at information collected over time, but we do not know exactly when women started taking supplements or how long they took them, which could affect the results
The Bottom Line
Women over 50 with kidney stones should not take calcium or vitamin D supplements specifically to improve their kidney stone symptoms or quality of life. However, these supplements may still be appropriate for bone health reasons, so discuss with your doctor whether you need them based on your individual bone health needs and risk of osteoporosis. The decision to take these supplements should be based on your overall health, not on hopes of feeling better from kidney stones
This research matters most for women over 50 who have had kidney stones and are considering whether to start calcium or vitamin D supplements. It also matters for doctors who treat kidney stone patients and need to counsel them about supplement use. The findings may not apply to men, younger women, or people who have never had kidney stones
Since these supplements did not improve quality of life in this study, you should not expect to feel better from your kidney stone symptoms after starting them. If you are taking these supplements for bone health, it typically takes several years to see benefits in terms of stronger bones and reduced fracture risk
Frequently Asked Questions
Do calcium and vitamin D supplements help with kidney stone pain?
No. A 2026 study of 734 women over 50 with kidney stones found that taking calcium, vitamin D, or both supplements did not reduce pain or improve quality of life compared to taking no supplements. These pills should be chosen based on bone health needs, not kidney stone relief
Should I stop taking calcium and vitamin D if I have kidney stones?
Not necessarily. Talk to your doctor about your individual situation. These supplements may still be important for bone health and preventing osteoporosis. The study shows they do not help kidney stone symptoms, but that does not mean you should stop them without medical advice
What percentage of women over 50 with kidney stones take these supplements?
In a study of 734 women, about 49 percent took calcium supplements, vitamin D supplements, or both. About 52 percent took neither supplement. The most common choice was vitamin D alone, taken by 28 percent of women
How should I decide whether to take calcium and vitamin D supplements?
Base your decision on bone health needs and your personal risk of osteoporosis, not on kidney stone symptoms. Work with your doctor to assess your bone health, calcium intake from food, and whether supplements are right for you based on your overall health profile
Can calcium supplements make kidney stones worse?
This study did not examine whether supplements make kidney stones worse. It only looked at whether they improve quality of life. Talk to your doctor about your specific risk factors for kidney stones and whether calcium supplements are safe for you
Want to Apply This Research?
- Track your daily pain level on a scale of 1 to 10 and your ability to do normal activities each day. If you are considering starting or stopping calcium or vitamin D supplements, record these measurements for 4 weeks before and 8 weeks after any change to see if your symptoms actually improve
- If you have kidney stones and are taking calcium or vitamin D supplements, use the app to log your symptoms daily and discuss with your doctor whether these supplements are truly helping your quality of life. Focus on taking supplements only if your doctor recommends them for bone health, not for kidney stone relief
- Set up weekly reminders to rate your overall quality of life, pain levels, and daily functioning. Over 3 to 6 months, look for patterns in your symptoms to see whether any changes in your supplement routine actually affect how you feel. Share this data with your doctor to make informed decisions about supplement use
This research shows that calcium and vitamin D supplements do not improve kidney stone symptoms or quality of life in women over 50. However, these supplements may still be important for bone health and preventing osteoporosis. Do not start, stop, or change any supplements without talking to your doctor first. This article is for educational purposes and should not replace professional medical advice. If you have kidney stones or are considering supplements, consult with your healthcare provider about what is right for your individual health needs
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.