iodine in levo - enough?: I know iodine... - Thyroid UK

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iodine in levo - enough?

MidnightBlue profile image
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I know iodine supplementation is controversial, but there seems to be lots of evidence linking low iodine and breast cancer. If someone wanted to supplement iodine with the aim of reducing their breast cancer risk, would the iodine in Levo will be enough? I believe it is very difficult to get an accurate test showing if you are low in iodine or not, but I'm happy to be corrected if anyone knows better.

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MidnightBlue
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Clutter profile image
Clutter

Midnightblue, 65% of 100mcg Levothyroxine is iodine. That, plus iodine absorbed via diet is probably enough to meet or exceed your RDA.

Iodine is an indispensable component of the thyroid hormones, comprising 65% of T4‘s weight, and 58% of T3‘s.

thyroidmanager.org/chapter/...

MidnightBlue profile image
MidnightBlue in reply to Clutter

Thank you clutter. I wonder then why there is an assossiation btw thyroid problems and breast cancer, if we are getting enoughiodine through the levo. It is a great worry to me.

Clutter profile image
Clutter in reply to MidnightBlue

Midnightblue, I think the association is with undiagnosed (untreated) hypothyroidism and breast cancer. If the hypothyroidism was due to lack of iodine, breast tissue will also be low in iodine.

MidnightBlue profile image
MidnightBlue in reply to Clutter

That would be a serious relief.

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