Algae-based fish substitutes provide iodine?
In a recent study, the content of iodine in various plant-based fish alternatives was examined. The results revealed some interesting findings that could impact the choices of consumers, particularly those with thyroid conditions.
Three of the tested products were found to be iodine-rich, containing more than 45 micrograms of iodine per 100 grams. This amount exceeds the recommended daily intake for an average adult, which is 150 micrograms. The plant-based tuna alternative stood out, with a serving of around 316 micrograms of iodine per 140-gram can, significantly higher than conventional canned tuna (21-28 micrograms per 140 grams).
Interestingly, consumers may not always be aware that individual vegan substitute products can contain high amounts of iodine. This is because the iodine content in plant-based fish alternatives depends on the type and amount of seaweed used, as well as natural fluctuations. As a result, consumers cannot easily recognise iodine content in these alternatives.
Five of the six tested products contained relevant amounts of iodine, with the iodine content in the other products ranging from 29 to 226 micrograms per 100 grams. However, none of the tested products met the criteria for requiring a declaration of iodine content, as the iodine content did not exceed 2,000 micrograms per 100 grams of dry matter.
For everyone else, a varied diet is the best basis for adequate iodine supply. Seaweed-containing fish substitutes can have a place in a varied diet, but consumers should be mindful of their overall iodine intake. For those with thyroid disease, it is recommended to ask the manufacturer about the iodine content of the product before consuming it.
In conclusion, while plant-based fish alternatives can be a good option for those following a vegan or vegetarian diet, consumers should be aware of the potential high iodine content in these products. Consuming typical serving sizes of plant-based fish alternatives can lead to high iodine intake without being aware of it. Therefore, it is essential to read labels and be informed about the iodine content of the products we consume.
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