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Is Iodine deficiency inherited?

By Lucy Rose Clinic

January 19, 2023

If you’ve been following us for a while, you’ll know we LOVE talking about IODINE.

Today’s blog topic is a big part of why we do what we do. We like to break down the barriers & the “norms” to educate our patients on why iodine is super important and why it can be a main contributor to your thyroid hormone dysregulation.

Let’s start from the beginning!

So, the thyroid is the butterfly shaped gland that sits in the front part of your lower neck.

In short, it creates iodine-filled hormones which play a key role in your brain development, regulating our growth and contributes to the rate of chemical reactions in your body that impact areas like your metabolism. Those with genetically linked hypothyroidism, known as “underactive” thyroid, have been shown to have lower levels of iodine, among other important nutrients compared to those who don’t have a thyroid condition.

Why is iodine important?

Iodine is a major nutrient needed for the production of your thyroid hormones.
The body cannot create iodine on its own, so it then needs to become an essential part of your diet. If you do not have enough iodine circulating in your body, you won’t be able to make enough thyroid hormones to regulate many different areas of your body..

.. So, iodine deficiency can lead to an enlarged thyroid, known as a goiter as well as increasing your risk of hypothyroidism 10-fold ..

Why is iodine intake MORE important for those carrying certain gene types?

Numerous genes involved in healthy thyroid function as well as autoimmune conditions are very sensitive to iodine uptake. For people who carry these gene variants, SUFFICIENT INTAKE of IODINE is important to MINIMISE RISK of thyroid DYSFUNCTION.

Now, let’s get stuck into the ‘nitty gritty’..

The two particular genes that are strongly influenced by iodine intake are PDE8B and DIO2.
About 65% of the world’s population carries the protein called protein phosphodiesterase 8B known as PDE8B, which increases risk for hypothyroidism. The other gene DIO2 decodes deiodinase type 2, that is utilised in the conversion of T4 (thyroxine) to the active T3 (triiodothyronine) hormone.

Thyroid disease is an issue that can run in the female family line

As we now know, the most common cause worldwide is a shortage of essential nutrients in our diet. In most cases, the mother and the affected female infant.
Nutrient deficiencies inherited from your mother

Breast tissue & ovaries store large amounts of iodine, and when iodine is insufficient it allows for abnormal changes to occur – which are the precursor to nodules, cysts and fibrocystic lumps.

Note, in many cases iodine supplements purchased over the counter are not high enough to account for what the mothers body required, when she fell pregnant. On top of that the soils here in Australia are either low or completely void of iodine, to provide the mothers diet with the necessary amount of nutrients needed for the bub’s healthy growth.

It is imperative we have adequate intake to maintain optimal health, as all the cells in our body need iodine

There’s a lot of misinformation about iodine and how it may give negative side effects, however like anything, if taken at the right dose it is harmless. The body also has a natural regulatory system to excrete it if you have too much, making sure we are safe at all times!

How do you know if you have an iodine deficiency?

A simple 24-hour urinary excretion load test will be able to tell you if you do have an iodine deficiency, or a toxic build up of bromide – which can block the intake of iodine.
This is a urinary test done in the comfort of your own home.

If you’re interested in reading on check out, how does this impact our generations?

PREVENTION is BETTER than CURE, so the earlier we treat this, the faster your body can heal & the less damage it causes to your body.

Book a discovery call to discuss your options – we are here to help!


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