Algae-based fish substitutes as a sufficient iodine source?
Consumer centres have issued a warning about the potential high levels of iodine in individual vegan substitute products, particularly those containing algae. This issue may not be immediately clear to consumers, making it essential to be aware of the iodine content in these algae-based products.
Labeling of iodine content is only mandatory when manufacturers advertise their products as "iodine-rich" or "iodine source" or if the content exceeds 2,000 micrograms per 100 grams of dry matter. However, this means that many algae-based products may not have iodine content clearly indicated on their labels.
Algae, a natural source of iodine, is commonly used in algae-containing plant-based fish and seafood alternatives. Consumers might find it challenging to recognize the iodine content in these algae-based products, especially if they are not aware of the potential high levels.
Recent tests conducted by consumer centres on six such vegan fish substitutes revealed varying iodine content. One product contained no notable amounts of iodine, while the other five products contained relevant amounts. Three of these products were so high in iodine that they could be considered iodine-rich, with the highest iodine content found in a canned vegan tuna alternative, providing approximately 316 micrograms of iodine per 140 grams. This exceeds the recommended daily intake of iodine, which is 600 micrograms from all sources combined.
For people with thyroid disease, it is recommended to ask the manufacturer about the iodine content of the algae-based product before consuming it. Consuming usual portion sizes of these products can lead to high iodine intake without being aware of it. High iodine levels can be critical for thyroid function if too much iodine is consumed over time, especially if one were to eat a product like the affected tuna alternative daily.
However, for everyone else, a varied diet remains the best basis for adequate iodine supply. Algae-based fish substitutes can have their place in a varied diet, but it is crucial to be mindful of their iodine content. The iodine content in these products depends on the type and amount of algae used, as well as natural fluctuations.
It is essential to remember that canned tuna contains significantly less iodine, between 21 and 28 micrograms per 140 grams, making it a safer choice for those concerned about their iodine intake.
In conclusion, while algae-based plant-based fish and seafood alternatives can be a valuable addition to a varied diet, consumers must be aware of their potential high iodine content. Always check the label, ask the manufacturer, and consider the iodine content when planning your meals.
