Risk of excessive iodine intake with certain algae products - Algae-based foods may contain dangerous iodine levels without warnings

A recent study has raised concerns about iodine levels in algae-based foods. Researchers found that many products contain unsafe amounts of the mineral, yet fail to provide clear warnings or serving instructions. Consumer groups are now pushing for stricter labelling rules to protect public health. The investigation, carried out by German consumer centres, tested 13 algae-containing foods. Eight of these required health warnings due to excessive iodine content. Among the flagged items were two algae-based pasta products and a rooibos tea with kombu algae, which exceeded safe limits even when consumed in normal portions.

Iodine levels in algae can vary widely depending on the species, where it grows, and environmental factors. While the German Nutrition Society advises a daily intake of 150 micrograms, amounts above 600 micrograms can harm thyroid function. Despite the risks, none of the tested products included full details on iodine content or appropriate warnings.

Consumer advocates are now calling for legally binding rules on iodine labelling. They argue that without clear information, shoppers cannot make safe choices. The study did not specify which products had the highest iodine levels or how many types of algae were examined. The findings highlight a gap in food safety regulations for algae products. Without proper labelling, consumers may unknowingly exceed safe iodine limits. Authorities are now under pressure to introduce clearer guidelines and mandatory warnings on packaging.