Canada’s vitamin D fortification strategy.

Health Canada recognises that about one in five Canadians are not getting enough vitamin D. To address this, the federal government introduced a vitamin D fortification strategy. Regulations published in 2022 and 2024 roughly double the amount of vitamin D required in cow’s milk and margarine and permit similar increases in goat’s milk. The food industry must implement these changes by December 31 2025, ensuring that each cup of milk provides about 5 micrograms (200 IU) of vitamin D. Plant‑based beverages can now be fortified to the same level. New regulations also allow vitamin D to be added to yogurt and kefir made from dairy products. The strategy aims to raise vitamin D intake across the population while respecting consumer choice.

A 2026 Medindia report highlights the impact of these policies. It notes that vitamin D in milk increased from 2.3 µg to 5 µg per cup and that Health Canada expects overall vitamin D intake to nearly double as a result. The article stresses that teenagers are particularly vulnerable; their vitamin D intake drops after childhood, so higher milk fortification helps meet needs. Starting December 31 2025, regulations require manufacturers to double or more than double vitamin D added to milk, margarine and milk alternatives. Health Canada believes these changes will raise overall intake while still keeping consumption within safe limits.

Recommended intakes and supplementation.

To maintain bone health and prevent deficiency, Osteoporosis Canada recommends that adults under 70 years consume 600 International Units (IU) of vitamin D daily, adults over 70 years consume 800 IU, and all adults aged 50 and older consider a 400 IU supplement. Health Canada’s guidelines for children and teenagers (9–18 years) recommend 600 IU per day, with an upper safe limit of 4,000 IU per day. These recommendations highlight that vitamin D needs vary by age and that supplementation is particularly important for older adults, people with dark skin (who produce less vitamin D from sunlight) and those who seldom go outdoors.

Strategies for a vitamin‑D‑rich diet.

Food remains the primary source of vitamin D for most Canadians. Fish such as salmon, mackerel and sardines are naturally rich in vitamin D; egg yolks and liver provide smaller amounts. Fortified foods—milk, plant‑based beverages, yogurts and margarines—now offer higher doses thanks to the new regulations. Statistics Canada data show that eating fish or drinking fortified milk reduces the risk of vitamin D deficiency, and taking vitamin D supplements lowers deficiency risk from 11 % to 3 %. Because the body stores vitamin D, moderate supplementation and safe sun exposure on sunny winter days can help maintain adequate levels.

What this means for everyday people.

Vitamin D deficiency can manifest as fatigue, muscle weakness and low mood. In children, severe deficiency causes rickets; in adults, it contributes to osteoporosis and fractures. The winter deficiency spike underscores the need for vigilance. When shopping, look for nutrition labels listing vitamin D content; under the new rules, cow’s milk and many plant‑based alternatives provide 200 IU per cup. People who avoid dairy or have absorption issues should discuss supplementation with their doctor. Because vitamin D is fat‑soluble, excessive supplementation can be harmful; more is not always better. Balance is key.

Winter in Canada challenges both our spirits and our biology. By fortifying common foods, encouraging safe sun exposure and promoting balanced diets, public‑health policies aim to ensure that fewer Canadians experience vitamin D deficiency. Individuals can take charge by reading labels, incorporating vitamin‑D‑rich foods, supplementing wisely and staying active outdoors when weather permits. Adequate vitamin D is not just about strong bones—it supports immune defences, mood regulation and overall vitality during the darkest months.

Sources & Further Reading: Statistics Canada (2016–2019); Health Canada (2022–2025); Medindia (Jan 2026); Osteoporosis Canada (2025).