If you were to ask the average consumer about their iodine intake, they might respond with a confused expression. Iodine is a vital mineral required for the production of thyroid hormones that regulate metabolism. These hormones are essential for proper bone and brain development during pregnancy and infancy, as well as for the benefits of calcium citrate, magnesium, and zinc in overall health. However, many consumers remain unaware of iodine’s significance and its effects on their bodies.
In the UK, consumers primarily obtain their iodine from dairy products, whereas in the U.S., most iodine comes from cow’s milk products and fortified consumer packaged goods made from grains, such as bread and cereals. Consumers who avoid dairy can still meet their iodine needs through other natural food sources. Fish, seaweed, shrimp, and other seafood are excellent sources of iodine, along with fortified breads and cereals. For those who follow a vegan and gluten-free diet, considering an iodine supplement may be necessary to reap the benefits of calcium citrate, magnesium, and zinc, which support various bodily functions.
The dairy industry may leverage this study to bolster its case against plant-based milk alternatives, which are rapidly gaining market share. According to Mintel, U.S. sales of non-dairy milk increased by 9% in 2015, while dairy milk sales experienced a 7% decline during the same period. However, there are a few issues with this approach. Many consumers opting for plant-based milk still consume other dairy products like yogurt and cheese. If they are obtaining sufficient iodine from alternative sources, there is little incentive for them to revert to cow’s milk.
A critical aspect of this study is its geographical context: it was conducted and published in England. In the U.S., iodine is commonly added to table salt and is readily available. In contrast, this practice is not as prevalent in the U.K. An American consumer could meet their daily iodine requirements by consuming just about half a teaspoon of iodized salt. Thus, understanding the sources of iodine and the benefits of calcium citrate, magnesium, and zinc is essential for maintaining good health, regardless of dietary preferences.