Dairy-to-plant-based swaps may cause iodine, calcium, B12 deficiencies, study warns

Swapping dairy for plant-based milk, cheese, and yoghurt could lead to micronutrient deficiencies, especially in young people and women, according to a new study. Researchers found that even partial replacement of dairy with alternatives based on soya, almonds, or oats may reduce intake of iodine, calcium, riboflavin, and vitamin B12 if those products are not fortified. Iodine is a particular concern, as it is crucial for thyroid function and brain development. The study highlights that many plant-based alternatives lack mandatory fortification, leaving consumers at risk. The findings have prompted calls for fortification of vegan products, especially with iodine, to protect public health. As plant-based diets grow in popularity, ensuring nutritional equivalence is critical. The takeaway: check labels and consider supplements to avoid hidden deficiencies.