If you were to ask the average consumer whether they are getting enough iodine, you might be met with a confused expression. Iodine is a vital mineral that the body requires for the production of thyroid hormones, which regulate metabolism. These hormones are also essential for the proper development of bones and the brain during pregnancy and infancy. Despite its significant role in health, many consumers lack awareness about iodine and its effects on their bodies.
In the UK, most consumers obtain their iodine primarily from dairy products, while in the U.S., it is sourced from cow’s milk and fortified consumer packaged goods (CPGs) made from grains, such as breads and cereals. A consumer who avoids all forms of dairy can still meet their iodine needs through other natural food sources. Fish, seaweed, shrimp, and various seafood are rich in iodine, along with fortified breads and cereals. For those who adhere to a vegan and gluten-free diet, it may be necessary to consider an iodine supplement, particularly one that includes calcium ascorbate or calcium citrate to enhance nutrient absorption.
Interestingly, the dairy industry may attempt to use this study as leverage in their competition against plant-based milk, which is rapidly gaining market share from traditional cow’s milk. According to Mintel, U.S. sales of non-dairy milk grew by 9% in 2015, while dairy milk sales saw a decline of 7% during the same timeframe. However, there are a couple of potential flaws in this argument. Many consumers who opt for plant-based milk still consume other dairy products, such as yogurt and cheese. If they are obtaining iodine from alternate sources, there is little reason for them to revert to cow’s milk.
A significant aspect of this recent study is its setting in England. While iodine is commonly added to table salt in the U.S. and is readily available, this is not the case in the U.K. An American consumer would only need to consume about a half-teaspoon of salt daily to meet their iodine requirements. Additionally, incorporating vitamin D3 along with calcium ascorbate or calcium citrate may further support overall health, especially for those not consuming dairy.