A Major New Review Says the Benefits Are Far Smaller Than Most People Think
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Introduction
For decades, doctors, health agencies, and supplement companies have told older adults the same thing: take your calcium and vitamin D to keep your bones strong and avoid broken hips. It seemed like sensible advice.
Calcium builds bone, vitamin D helps your body absorb calcium, and low levels of both have been linked to weaker bones and more falls. So why wouldn’t taking more calcium and vitamin D help?
A comprehensive new systematic review and meta-analysis published in The BMJ (2026) examined this question more thoroughly than ever before, and the results are striking.
After analyzing 69 randomized controlled trials involving 153,902 participants, the researchers concluded that calcium, vitamin D, or the two combined offer little to no meaningful benefit for preventing fractures or falls.
This is not just another study. It is one of the largest and most rigorous reviews ever conducted on the topic, and it carries an important message: the supplements so many people take every day may not be doing what they think.
Why This Question Matters
Falls and fractures are not minor inconveniences. Among adults aged 65 and older, nearly one in three falls each year. Falls are the leading cause of both fatal and non-fatal injuries in this age group, leading to hospital visits, loss of independence, and enormous healthcare costs.
The consequences go beyond physical injury. About 85 percent of older adults who have fallen develop a fear of falling, which leads them to reduce their daily activities. That reduction in movement makes them weaker and more likely to fall again, creating a vicious cycle.
Fractures are equally serious. Half of all women and one in five men will experience a low-trauma fracture in their lifetime, often caused by a simple fall.
Hip fractures, in particular, are associated with pain, loss of mobility, declining quality of life, and a higher risk of dying within the following year.
Given these stakes, finding effective prevention strategies has become a global public health priority. Calcium and vitamin D have long been at the center of that effort.
The Logic Behind the Supplements
The reasoning has always seemed sound. Calcium is the primary mineral in bone. Vitamin D helps the body absorb calcium from the gut and regulates bone turnover. In observational studies, people with low dietary calcium intake and low blood vitamin D levels tend to have lower bone density, weaker muscles, and higher rates of falls and fractures.
These findings led to widespread recommendations. Vitamin D supplements, with or without calcium, became standard advice for musculoskeletal health. Prescriptions soared. In the United Kingdom alone, spending on vitamin D prescriptions rose from about 13 million pounds in 2001 to 111 million pounds in 2021.
But observational studies can only show associations, not cause and effect. The real test is whether giving people these supplements actually prevents fractures and falls. That is where randomized controlled trials come in — and where the story becomes much more complicated.
What the New Review Did
The researchers behind the new BMJ review set out to answer one core question: In adults not taking prescription osteoporosis drugs, do calcium, vitamin D, or combined supplements reduce the risk of fractures and falls?
They searched major medical databases, clinical trial registries, conference abstracts, and reference lists. They included only randomized controlled trials — the gold standard for testing cause and effect. They excluded studies of people taking active vitamin D analogs or osteoporosis medications, and they placed no restrictions on dose, duration, or language.
Two reviewers independently screened all studies, extracted data, and assessed risk of bias. They used a well-established system called GRADE to rate how confident we can be in the findings. They also defined thresholds for what would count as a clinically meaningful benefit — in other words, how much reduction in fractures or falls would actually matter to patients.
What They Found
The review included 69 trials with 153,902 participants. Most participants lived independently in the community, and most were not considered at high risk of fractures or falls. The average age was about 71.
Here is what the analysis showed.
Calcium Alone
Calcium supplements did not significantly reduce the risk of any fracture, hip fracture, non-vertebral fracture, vertebral fracture, or falling. The evidence for most of these outcomes was moderate in certainty.
For hip fracture specifically, the evidence was very uncertain — the data even hinted at a possible increase, though this finding was imprecise and biologically implausible.
In plain terms, calcium alone did not appear to prevent fractures or falls.
Vitamin D Alone
Vitamin D fared no better. Across 36 trials involving more than 92,000 participants, vitamin D had no effect on the risk of any fracture. It also had no effect on hip fractures, non-vertebral fractures, vertebral fractures, the risk of falling, or the total number of falls. The certainty of this evidence was rated as high — meaning we can be quite confident in these results.
This is particularly notable because vitamin D has been widely promoted for fall prevention. The new review found no support for that claim.
Calcium and Vitamin D Combined
The combined supplement showed a slightly different picture. There were statistically significant reductions in the risk of any fracture, hip fracture, and non-vertebral fracture. However, the absolute benefits were tiny.
For example, the risk of any fracture dropped from about 11.3 percent to 10.3 percent — an absolute reduction of just 1 percent. That means about 100 people would need to take the supplement for several years to prevent one fracture. For hip fractures, the reduction was 0.3 percent. For non-vertebral fractures, it was 1.6 percent.
These reductions did not reach the thresholds the researchers had set for clinical meaningfulness. In other words, while the numbers moved slightly in the right direction, the change was so small that most patients would not notice a difference.
The researchers also found that a single large trial had a disproportionate influence on the combined supplement results. When that trial was removed from the analysis, the statistical significance disappeared. This suggests that even the modest benefits observed may not be reliable.
What About High-Risk People?
One important question is whether these supplements might help people who are already at high risk — those with a history of fractures or falls, those living in nursing homes, or those with osteoporosis.
The review looked at this through subgroup analyses. For calcium alone and combined supplements, the evidence for high-risk populations was limited for many outcomes. There was no consistent evidence that treatment effects differed between high-risk and lower-risk groups.
The authors note that their conclusions may somewhat underestimate benefits for high-risk populations, particularly for combined supplementation. But the overall picture does not change: even in higher-risk groups, the benefits appeared small.
Why the Results Are So Much Less Impressive Than Expected
There are several reasons why these supplements have not lived up to their early promise.
First, the early excitement was based on a small number of trials, some of which had methodological problems. One influential trial from the early 1990s enrolled very old women in nursing homes who had severe vitamin D deficiency and very low calcium intake.
Many of them likely had unrecognized osteomalacia — a bone-softening condition caused by severe vitamin D deficiency. For those women, supplementation was correcting a serious deficiency, not providing a preventive benefit to healthy people. Subsequent trials in better-nourished populations did not replicate those dramatic results.
Second, many trials enrolled people who were not deficient in vitamin D or calcium to begin with. If your body already has enough of these nutrients, adding more does not necessarily further strengthen your bones.
Third, many trials used low doses of vitamin D, had short follow-up periods, or were too small to detect meaningful differences in fracture rates.
Fourth, participants in the control groups were often allowed to take their own calcium and vitamin D supplements. This “contamination” would tend to make the treatment appear less effective than it actually is, since both groups would receive extra nutrients.
Finally, fractures and falls are complex events with many causes. Bone strength is only one factor. Muscle strength, balance, vision, medications, home hazards, and other health conditions all play major roles.
A single nutrient supplement is unlikely to overcome all of these.
Beyond Supplements: Non-Drug Strategies to Prevent Fractures and Falls
If calcium and vitamin D supplements are not the answer, what is? The evidence points to several other approaches.
Exercise
Physical activity is one of the most effective non-drug strategies for reducing the risk of falls and fractures. Weight-bearing exercises like walking, dancing, and stair climbing help maintain bone density.
Resistance training builds muscle strength, which improves balance and stability. Balance exercises like tai chi and yoga can significantly reduce the risk of falling.
A Cochrane review of exercise for preventing falls in older adults found that exercise programs reduce both the rate of falls and the number of people who fall. The benefits are greatest when exercise is ongoing and includes a combination of strength, balance, and functional training.
Home Safety Modifications
Many falls happen at home, and many of those can be prevented. Simple changes can make a big difference: removing loose rugs, improving lighting, installing grab bars in bathrooms, using non-slip mats in the shower, and keeping frequently used items within easy reach.
Occupational therapists can assess a home and recommend specific modifications. For people at high risk of falls, these interventions have been shown to reduce fall rates.
Medication Review
Some medications increase the risk of falls and fractures. Sedatives, sleeping pills, antidepressants, antipsychotics, and certain blood pressure medications can cause dizziness, drowsiness, or balance problems.
Blood pressure medications may cause drops in blood pressure upon standing, leading to falls.
Specific age considerations: Aggressive blood pressure lowering is not universally recommended for all older adults. The American College of Physicians (ACP) and the American Academy of Family Physicians (AAFP) issued a joint guideline recommending that for adults aged 60 and older with persistent systolic blood pressure ≥150 mmHg, treatment should aim for a target of <150 mmHg, rather than more intensive targets.
This guidance reflects evidence that more aggressive blood pressure targets do not consistently reduce mortality or cardiac events in this population and may increase the risk of adverse effects such as very low blood pressure and passing out.
For very elderly or frail patients, blood pressure management should be highly individualized, with some guidelines suggesting allowing systolic blood pressure to rise above 160 mmHg before initiating treatment
A periodic review of all medications by a doctor or pharmacist can identify drugs that might be contributing to fall risk and allow for adjustments or alternatives. This is a simple but often overlooked strategy.
Vision and Hearing Checks
Poor vision and hearing loss are both associated with an increased risk of falls. Regular eye exams can detect and correct vision problems. Cataract surgery has been shown to reduce falls in some studies. Hearing aids can improve spatial awareness and balance.
Nutrition
While calcium and vitamin D supplements may not prevent fractures in well-nourished people, overall nutrition still matters for bone health. Adequate protein intake helps maintain muscle mass.
A balanced diet rich in fruits, vegetables, and whole grains supports overall health. For people who are malnourished or have specific deficiencies, addressing those deficiencies is important — but that is different from routine supplementation for everyone.
Smoking Cessation and Alcohol Moderation
Smoking accelerates bone loss and increases fracture risk. Excessive alcohol consumption impairs balance and coordination and is associated with a higher fall risk. Stopping smoking and limiting alcohol are important steps for bone and fall prevention.
Fall Prevention Programs
Many communities offer structured fall prevention programs that combine exercise, education, and home safety assessment. These programs have been shown to reduce falls and are recommended by major health organizations. Examples include the Otago Exercise Program and Stepping On.
What the Review’s Authors Conclude
The authors of the BMJ review are direct in their conclusion: “Based on absolute risk reductions and thresholds considered clinically meaningful, this review found little to no benefits with calcium, vitamin D, or combined supplements on fracture and fall prevention.”
They add that these findings do not support routine supplementation with calcium, vitamin D, or a combination of both to prevent fractures or falls in the general adult population.
Importantly, the authors note that their findings may not apply to certain groups: people with specific bone disorders, those receiving drug treatment for osteoporosis, and those taking long-term corticosteroids.
In those cases, calcium and vitamin D are often recommended as background treatment alongside osteoporosis medications.
The authors also call on clinicians, guideline panels, and regulatory agencies to re-evaluate their general recommendations for calcium and vitamin D supplementation in light of current evidence.
The Bottom Line
The story of calcium and vitamin D supplementation is a cautionary tale about how early enthusiasm, based on limited evidence, can become entrenched practice. For decades, these supplements were promoted as essential for bone health. The evidence now suggests that for most adults, they do not prevent fractures or falls.
That does not mean calcium and vitamin D are unimportant. They are essential nutrients. But getting them from food and maintaining adequate levels is different from taking high-dose supplements in the hope of preventing fractures.
Sunlight exposure is another important source of vitamin D. When ultraviolet B (UVB) rays from the sun reach the skin, the body synthesizes vitamin D3. For many people, brief and regular sun exposure — typically 10 to 30 minutes of midday sunlight several times per week — can help maintain adequate vitamin D levels.
However, factors such as skin tone, age, latitude, season, and sunscreen use all affect how much vitamin D the skin produces. For older adults, in particular, the skin becomes less efficient at synthesizing vitamin D, and many people do not get enough sun exposure, especially in winter months or at northern latitudes.
This is one reason why some individuals may still need supplementation despite the review’s overall findings. As with supplements, the decision should be individualized based on a person’s circumstances and discussed with a healthcare provider.
If you are taking calcium or vitamin D supplements, or considering starting them, talk to your doctor. The decision should be individualized.
If you have a diagnosed deficiency, osteoporosis, or are taking medications that affect bone health, supplementation may still be appropriate. But for the average older adult hoping to avoid a broken hip, the evidence suggests these supplements are not the answer.
The real solutions lie elsewhere: staying active, making homes safer, reviewing medications, and addressing vision and hearing problems. These strategies, while less glamorous than a pill, have stronger evidence behind them.
Key Takeaways
- A major new review of 69 trials and over 153,000 participants found that calcium, vitamin D, or combined supplements offer little to no meaningful benefit for preventing fractures or falls in most adults.
- Vitamin D alone, even with high-certainty evidence, showed no effect on fractures or falls.
- Calcium alone showed no significant benefit and very uncertain evidence for hip fractures.
- Combined calcium and vitamin D showed small, statistically significant reductions in some fracture types, but the absolute benefits were too small to be clinically meaningful for most people.
- These findings do not support routine supplementation for fracture and fall prevention in the general adult population.
- The results may not apply to people with specific bone disorders, those on osteoporosis drugs, or those taking long-term corticosteroids.
- Non-drug strategies — especially exercise, home safety modifications, medication review, and vision and hearing checks — have stronger evidence for preventing falls and fractures.
- If you take these supplements, talk to your doctor about whether they are still appropriate for your individual situation.
- Clinicians, guideline panels, and regulatory agencies should re-evaluate their general recommendations for calcium and vitamin D supplementation in light of this evidence.
Don’t Get Sick!
About Dr. Jesse Santiano, MD
Dr. Santiano is a retired internist and emergency physician with extensive clinical experience in metabolic health, cardiovascular prevention, and lifestyle medicine. He reviews all medical content on this site to ensure accuracy, clarity, and safe application for readers. This article is for educational purposes and is not a substitute for personal medical care.
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References:
- Massé O, Mercurio C M, Dupuis S, Al Sahwi M, Arruda A, Dallaire G et al. Calcium, vitamin D, or combined supplementation to prevent fractures and falls: systematic review and meta-analysis BMJ 2026; 393 :e088050 doi:10.1136/bmj-2025-088050
- Jessica Weiss, Michele Freeman, Allison Low, et al. Benefits and Harms of Intensive Blood Pressure Treatment in Adults Aged 60 Years or Older: A Systematic Review and Meta-analysis. Ann Intern Med.2017;166:419-429. [Epub 17 January 2017]. doi:10.7326/M16-1754
- Falk JMFroentjes LKirkwood JEMHeran BSKolber MRAllan GMKorownyk CSGarrison SR. Blood pressure targets for older adults with high blood pressure.
- Qaseem, A., Wilt, T. J., Rich, R., Humphrey, L. L., Frost, J., & Forciea, M. A. (2017). Pharmacologic treatment of hypertension in adults aged 60 years or older to higher versus lower blood pressure targets: A clinical practice guideline from the American College of Physicians and the American Academy of Family Physicians. Annals of Internal Medicine, *166*(6), 430–437. https://doi.org/10.7326/M16-1785
Disclaimer:
This article is for educational purposes and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician before making health decisions based on the TyG Index or other biomarkers.
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