Iodine

Benefits of Iodine

  • Thyroid function
  • Energy
  • Cognitive function
  • Form: Potassium Iodide
  • Food source: Iodine-fortified plant milks, iodised salt and seaweed (the iodine content of seaweed varies widely).
Iodine

What is Iodine?

Iodine is an essential mineral. Most iodine in the UK diet comes from dairy and seafood, and not all plant milks are fortified with it, so vegans need to think about where theirs comes from. Many popular meal replacement and protein shakes don't include it either.

What does Iodine do?

Iodine contributes to the normal production of thyroid hormones and normal thyroid function. It also contributes to normal energy-yielding metabolism, normal cognitive function, normal functioning of the nervous system and the maintenance of normal skin.

Iodine is used directly in making thyroid hormones. The thyroid makes the hormone T4, and some T4 is then converted around the body, including in the liver, into T3, the more active form. This conversion relies on enzymes that need selenium. Selenium contributes to normal thyroid function. Thyroid hormones are involved in our metabolic rate, energy levels, digestive system and heart, as well as a range of other processes and organs.

The body's need for iodine increases during pregnancy. Research has looked at iodine and thyroid hormones during pregnancy and iodine intake before and during pregnancy.

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