Canada’s new vitamin D fortification rules, implemented between 2022 and 2024, are predicted to significantly improve vitamin D levels across the population. According to Gram Research analysis, the updated strategy could reduce inadequate vitamin D status from 15.3% to 10.6% in children and teens, and from 19.6% to 14.6% in adults, by increasing vitamin D in milk, margarine, plant-based beverages, and yogurt. The changes appear safe with no risk of exceeding safe upper limits.
Canada just updated its rules for adding vitamin D to foods like milk, margarine, and plant-based drinks. Researchers used computer models to predict how these changes would affect Canadians’ vitamin D levels. According to Gram Research analysis, the new fortification strategy could significantly reduce the number of people, especially children and adults, who don’t get enough vitamin D. The study found that these changes appear safe and won’t cause anyone to get too much vitamin D, though researchers say they’ll need to check real-world results once new data becomes available.
Key Statistics
A 2026 cross-sectional modeling study of 21,387 Canadians found that updated vitamin D fortification rules could reduce inadequate vitamin D status in children and teens from 15.3% to 10.6%, and in adults from 19.6% to 14.6%.
Research modeling of Canadian dietary data showed that before new fortification rules, 85.7% of Canadians across all age groups were not meeting recommended vitamin D intakes, a gap the updated strategy is predicted to substantially narrow.
According to a 2026 analysis of Canadian health data, the new vitamin D fortification strategy would reduce the percentage of non-pregnant and non-lactating adults not meeting vitamin D recommendations from 85.7% to between 62.8% and 80.6%, with no groups exceeding safe upper intake limits.
A modeling study of 19,369 Canadians’ dietary intake found that adding vitamin D to plant-based beverages at 2 micrograms per 100 milliliters, combined with increased fortification of milk and margarine, could improve vitamin D status across multiple age groups and racial populations.
The Quick Take
- What they studied: Whether Canada’s new rules for adding more vitamin D to common foods would help more people get enough vitamin D and improve their vitamin D levels in the blood.
- Who participated: Researchers looked at data from nearly 21,400 Canadians ages 3 to 79 years old who participated in health surveys between 2012 and 2019, plus information about what people ate from a 2015 survey of over 19,000 Canadians.
- Key finding: The new vitamin D fortification rules could cut the number of children and teens with low vitamin D levels from 15.3% to 10.6%, and reduce low levels in adults from 19.6% to 14.6%. No one would exceed safe upper limits.
- What it means for you: If you live in Canada, the milk, margarine, and plant-based drinks you buy will soon have more vitamin D added to them, which should help you maintain healthier vitamin D levels without any risk of getting too much. This is especially helpful for people who don’t get much sun exposure.
The Research Details
Researchers used computer models to predict what would happen if Canada increased the amount of vitamin D added to foods. They started with real information about what Canadians actually eat from surveys conducted in 2015 and 2012-2019. They then plugged in the new amounts of vitamin D that Health Canada decided to add to milk, margarine, plant-based beverages (like almond or oat milk), and yogurt. The computer models calculated how much vitamin D people would get from these fortified foods and compared it to what happened before the new rules.
The researchers looked at different groups of people: children, teens, adults, pregnant women, and people from different racial and Indigenous backgrounds. For each group, they checked whether the new vitamin D amounts would help more people reach the recommended daily intake without anyone getting too much. They also used blood test data from Canadian health surveys to estimate how many people had low vitamin D levels in their blood and predicted how many would have low levels after the new fortification rules took effect.
This type of modeling study is useful because it lets researchers predict the impact of policy changes before they happen in real life. However, the predictions need to be confirmed with actual data once the new fortified foods have been on store shelves for a while and people have been eating them.
Modeling studies like this help governments decide whether new food fortification rules are worth implementing. By predicting the results before making changes, Health Canada could be confident that adding more vitamin D to foods would actually help people without causing harm. This approach saves time and money compared to waiting years to see if a policy works.
This study used real data from large, representative surveys of Canadians, which makes the predictions more reliable. The researchers checked their work against multiple groups of people to make sure the benefits would apply broadly. However, the study is based on predictions, not actual results. The researchers themselves noted that the real-world impact needs to be confirmed once new surveillance data becomes available. The study also relied on self-reported food intake, which can sometimes be inaccurate.
What the Results Show
Before the new fortification rules, computer models showed that 85.7% of Canadians across all age groups were not getting enough vitamin D from their current diet. The new fortification strategy is predicted to dramatically improve this situation. Among children and teens, the percentage of people not getting enough vitamin D would drop from about 85.7% to between 34.3% and 66.3%, depending on their specific age group. For non-pregnant and non-lactating adults, the improvement would be from 85.7% to between 62.8% and 80.6%. Pregnant and lactating women would see the percentage drop to 51%.
When researchers looked at blood test data, they found that about 15.3% of children and teens currently have low vitamin D levels in their blood (below 40 nanomoles per liter, which is the cutoff for inadequate status). With the new fortification strategy, this would drop to 10.6%. For adults, the prevalence of low vitamin D status would decrease from 19.6% to 14.6%. These improvements were seen across different racial groups and Indigenous populations, suggesting the new rules would help many different communities.
Importantly, the modeling showed that no group of Canadians would exceed the safe upper limit for vitamin D intake. This means the new fortification strategy appears to be safe for everyone, including people who might get vitamin D from multiple sources like supplements or sun exposure.
The study found that the benefits of the new fortification strategy varied somewhat by age group and racial or Indigenous identity. Younger children and older adults showed different patterns of vitamin D intake, but all groups benefited from the increased fortification. The research also showed that plant-based beverages, which are increasingly popular in Canada, could become an important source of vitamin D if they are fortified at the recommended levels. The addition of vitamin D to yogurt and kefir, which was newly permitted, would provide another dietary source, though the impact was smaller than for milk and plant-based drinks.
Canada’s previous vitamin D fortification strategy, which had been in place for many years, was not keeping up with current public health needs. Studies showed that vitamin D deficiency remained a significant problem in Canada, particularly in northern regions with limited sun exposure during winter months. The updated strategy represents an important shift in recognizing that more vitamin D in the food supply is needed. This approach aligns with recommendations from other countries and health organizations that have also increased vitamin D fortification in response to widespread inadequate vitamin D status.
The biggest limitation is that this study uses predictions, not actual results. Researchers modeled what they think will happen, but real-world results could differ. The study relied on self-reported food intake from surveys, and people are not always accurate about what they eat. The data used to build the models came from 2015 and 2012-2019, so eating habits may have changed since then. Additionally, the study couldn’t account for all sources of vitamin D, such as supplements people take or vitamin D from sun exposure. Finally, the study assumed that food manufacturers would fortify products at the levels Health Canada recommends, but actual fortification levels might vary.
The Bottom Line
If you live in Canada, you can expect that milk, margarine, plant-based beverages, and yogurt will contain more vitamin D starting in 2022-2024. This should help you maintain adequate vitamin D levels through your regular diet. The evidence suggests this is a safe and effective public health measure. However, people in northern Canada or those with limited sun exposure may still want to discuss vitamin D supplementation with their doctor, especially during winter months. Confidence level: Moderate to High, based on modeling of reliable data, but awaiting confirmation from real-world surveillance.
Everyone living in Canada should be aware of these changes, but they’re especially important for children, teens, older adults, pregnant women, and people with darker skin tones (who produce less vitamin D from sun exposure). People who follow vegan or vegetarian diets and rely on plant-based beverages will particularly benefit. People with certain medical conditions that affect vitamin D absorption should still consult their healthcare provider.
The new fortification rules were implemented between 2022 and 2024, so fortified foods should already be appearing on store shelves. It may take several months to a year for the full impact to be seen as people gradually consume more of the newly fortified products. Blood vitamin D levels typically take 2 to 3 months to change noticeably when intake increases. Health Canada plans to collect new surveillance data to confirm these predictions, which will likely take another 2 to 3 years.
Frequently Asked Questions
How much more vitamin D will be added to Canadian milk and plant-based drinks?
Health Canada increased the mandated vitamin D in cow’s milk and margarine, and now allows higher voluntary fortification of plant-based beverages at 2 micrograms per 100 milliliters. Yogurt and kefir can now be voluntarily fortified with approximately 5 micrograms per serving. These increases are predicted to help millions of Canadians reach adequate vitamin D levels.
Is it possible to get too much vitamin D from fortified foods under Canada’s new rules?
No. The modeling study found that no population group would exceed the safe upper limit for vitamin D intake under the new fortification strategy, even when accounting for multiple dietary sources. The new rules are designed to be safe for all Canadians, including children and pregnant women.
When will these new vitamin D fortified foods be available in Canadian stores?
Health Canada implemented the updated vitamin D fortification strategy between 2022 and 2024, so fortified products should already be available or becoming available on store shelves. Check nutrition labels on milk, plant-based beverages, margarine, and yogurt to confirm they contain added vitamin D.
Will the new vitamin D fortification help people in northern Canada during winter?
Yes. The modeling predicts improvements across all Canadian regions and populations. People in northern areas with limited winter sun exposure should particularly benefit from increased dietary vitamin D. However, some individuals may still benefit from discussing vitamin D supplementation with their healthcare provider during winter months.
Do I still need vitamin D supplements if Canada’s new fortification rules take effect?
The new fortification strategy is predicted to help most Canadians reach adequate vitamin D levels through diet alone. However, some people, particularly those with limited sun exposure, darker skin tones, or certain medical conditions, may still benefit from supplements. Consult your doctor to determine if supplementation is right for you.
Want to Apply This Research?
- Track your vitamin D intake by logging fortified foods you consume: milk (note the amount), plant-based beverages, margarine, and yogurt. Record the serving size and note the vitamin D content from the nutrition label. Aim to track for at least 7 days to see your typical weekly intake.
- Switch to fortified plant-based beverages if you don’t drink cow’s milk, or add an extra glass of fortified milk to your daily routine. Check labels to ensure products are fortified with vitamin D. If you use margarine, choose a fortified brand. These simple swaps can significantly increase your vitamin D intake without requiring major dietary changes.
- Set a monthly reminder to review your average vitamin D intake from fortified foods. Track seasonal changes, as you may naturally get more vitamin D from sun exposure in summer months. If you live in northern Canada, pay special attention to winter intake. Consider asking your doctor about a blood test for vitamin D levels once yearly to confirm the strategy is working for you personally.
This article summarizes research predictions based on computer modeling, not actual results from real-world implementation. The study’s findings are based on dietary surveys and health data from 2012-2019 and 2015, and actual results may differ once new surveillance data is collected. This information is for educational purposes only and should not replace professional medical advice. If you have concerns about your vitamin D status or are considering vitamin D supplementation, especially if you have a medical condition or take medications, consult with your healthcare provider or a registered dietitian. Individual vitamin D needs vary based on age, skin tone, sun exposure, and other factors.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.