Magnesium test result - do I need to supplement? - Thyroid UK

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Magnesium test result - do I need to supplement?

HotelHurricaine profile image
6 Replies

Hello,

I'm busy trying to improve my T3 conversion thanks to this forum.

Have done Medichecks test for iron and just started supplementing on advice here.

Also supplementing Vit D3, K2, B complex w folate and awaiting Selenium and copper test results (no zinc test available at medichecks so opting for zinc/copper seesaw approach).

Can anyone advise if I should supplement Magnesium with this test result? I have searched the site but can't find any info on optimal Magnesium levels for those with Hashimoto's.

Any advice most welcome. 🙏

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HotelHurricaine
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HotelHurricaine profile image
HotelHurricaine

Apologies, I remember now that I was told here that Magnesium blood test is not reliable.

Is advice then to supplement regardless?

Is any particular dose advisable?

🙏

SeasideSusie profile image
SeasideSusieRemembering

Testing magnesium is unreliable. About 99% of magnesium is stored in bone, muscles and soft tissues, leaving about 1% in the blood. So testing what's in the blood isn't giving an accurate picture of our magnesium status.

A red cell magnesium test is the better indicator of magnesium status, not the standard serum magnesium test. The red cell test is expensive and requires phlebotomy which is why it's not included in these bundles.

If you want to read the science, this information is from this article:

ncbi.nlm.nih.gov/pmc/articl...

When taking D3 we should take magnesium as this helps the body convert D3 into it's usable form. If you are worried you may be taking it unnecessarily then look out for symptoms of Hypermagnesaemia:

Nausea

Vomiting

Neurological impairment

Hypotension

Flushing

Headache

Heart problems

Breathing difficulties

There are many types of magnesium so we have to check to see which one is most suitable for our own needs:

naturalnews.com/046401_magn...

The following link is included purely to describe the different forms of magnesium, ignore the fact that it mentions calcium is necessary, calcium is only necessary if you test and found to be deficient and then your GP should address that

explore.globalhealing.com/t...

and ignore the fact that this is a supplement company, the information is relevant:

swansonvitamins.com/blog/ar...

Magnesium should be taken 4 hours away from thyroid meds and as it tends to be calming it's best taken in the evening.

HotelHurricaine profile image
HotelHurricaine in reply toSeasideSusie

Thank you.

humanbean profile image
humanbean

Two other comments to add to SeasideSusie 's reply is that the body "protects" levels of magnesium in the blood. If levels of magnesium in blood drop the body steals it from the bones, muscles, and soft tissues so that levels in the blood will always stay fairly consistent. Someone could have a totally normal level of magnesium in blood and yet be deficient elsewhere in the body. So people can't really know if their magnesium level is low, "normal", or high for certain.

If you look at Table 2 in the first link that Susie gave it tells you that

0.3% of the body's total magnesium is in serum

0.5% is in the red blood cells

19.3% is in soft tissues

27% is in muscle

52.9% is in bone

On the basis of the above I would never pay for a red blood cell magnesium test even if I had the money for it.

I think anyone who suffers from cramp, eyelid tics or tics affecting other places other than the eyes, benign fasciculations, or restless legs should supplement magnesium.

Anyone with severely diseased kidneys or kidney failure should not take magnesium supplements without discussing it with a doctor first. Excess magnesium is excreted via the kidneys - but only if they work.

Just for info :

Magnesium deficiency : en.wikipedia.org/wiki/Magne...

Magnesium toxicity : en.wikipedia.org/wiki/Hyper...

Magnesium deficiency is extremely common globally.

For information on doses :

en.wikipedia.org/wiki/Dieta...

I think you'll find that many magnesium supplements provide about 250mg - 400mg of magnesium per dose. Being female I wouldn't go above about 300mg - 350mg. Men would probably be okay with slightly more.

HotelHurricaine profile image
HotelHurricaine

Thank you thats super helpful.

Star13 profile image
Star13

I’m using Higher Natures Super Magnesium 300mg. It’s making my ankles itch. Does anyone know if that is a normal reaction?

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