UK plant-based dairy shift risks iodine deficiency for teens

UK market analysis shows swapping dairy for plant-based alternatives could significantly increase iodine deficiency among adolescent girls and women.

A Lancet Planetary Health study analyzing 146 UK plant milks, 76 yoghurts, and 67 cheeses reveals that replacing 15-20% of dairy consumption with plant-based alternatives could raise iodine deficiency prevalence among UK teenage girls from 54% to 65%. Current market data shows only 12% of plant milks are iodine-fortified—critical for preventing deficiency in this group. Replacing 100% of dairy with plant alternatives could push teenage girls’ deficiency rates to 80%. The analysis specifically models impacts based on typical market fortification levels, not universal implementation. While some brands like Alpro and Oatly offer iodine fortification, the majority of plant-based dairy products lack this essential nutrient. This friction arises because iodine deficiency is already widespread among UK teenage girls, and plant-based swaps without adequate fortification could worsen health outcomes for vulnerable populations. The study highlights that iodine-rich salt added to bread reduced deficiency risks in modelled scenarios, suggesting targeted interventions could mitigate these gaps. What matters most is that the UK’s growing plant-based market currently fails to meet nutritional needs for key groups, creating a direct barrier to health access. Policy must address fortification gaps before widespread adoption of plant-based dairy escalates health risks for youth and women. This is a market-driven friction point in the SUSTENANCE sector that threatens universal health outcomes if unaddressed.

Source: Guardian