B12 injections and T3 (thyroid hormone)

[rogergee]

Morning all.

Asking over here first...

Does anybody have knowledge (or even experience) of whether starting on the B12 injections can kick-start the body's system into doing T3 conversion when it was little able to do that before?

And also, does PA come under endocrinology?

Thanks in advance

rogergee

[jade_s]

PA does not come under endocrinology. Usually hematology, neurology, or gastroenterology.

I don't have any references on it increasing T3 conversion but I wouldn't doubt it. B12D can create a state of severe illness and lots of processes could be affected by that. In my case, b12d created severe "intolerance" to thyroid meds, and attempting to increase the measly dose i could tolerate affected my nerves.

Can you share some context?

[davina70 in reply to jade_s]

How did this intolerance manifest itself Jade I’ve been having palpitations for the last year I take thyroxin and have PA ..,?

[jade_s in reply to davina70]

It caused numbness and severe burning. I had palps as well but this could have been due to low thyroid. I see in your TUK post you mention that your dose was reduced - it could very well be from that. You might also need T3. How often do you get B12 injections? You might need more! I have to do them daily even after 6 years.

Here is my post describing what happened when I tried to raise my levo dose while B12 deficient: healthunlocked.com/pasoc/po...

[davina70 in reply to jade_s]

Thanks Jade just been to give blood have a cancellation to finally see an endo on Thursday watch this space !

[jade_s in reply to davina70]

Good luck!

[rogergee in reply to jade_s]

Crikey, that sounds difficult for you. Thanks for the info.

[Pickle500]

I don't know much about t3 conversion, but about a year before I become severely b12 deficient Doctors found a nodule on my thyroid. This was found following a routine scan after the appearance of a parotid gland tumour.

Because the thyroid nodule was 'indeterminate' for Cancer (i.e. they couldn't say if it was or wasn't C based on a FNA biopsy) they removed half the thyroid at the same time as the parotid gland tumour.

This was in August 2020 and by April 2021 I was on my knees with B12 deficiency. I had been to the GP in March 2020 with symptoms--and even said I wondered if the heat in my body and pins and needles related to the thyroid--and they didn't like that. And told me it was stress.

At no point did any GP raise the issue or test for B12 after removing half my thyroid.

I don't know if this is helpful.

[rogergee in reply to Pickle500]

Thank you for that. I hope you've revovered well from everything.

[Gambit62 Administrator]

I honestly don't know about interactions between thyroid hormones and B12 though it isn't uncommon for people reporting that they need to reduce thyroid medication when they start B12 injections. This may be because some processes that needed both B12 and thyroid hormones start running more efficiently and start using less of the thyroid hormones as a result.

[rogergee in reply to Gambit62]

Thanks Gambit62. I hadn't read iit anywhere before asking on here. I can imagine it's another area that's a nightmare via the NHS to juggle to get right for people.

[WhyAmISoTired]

Starting on B12 injections didn't affect my t4 to t3 conversion.

However, my tsh increased immediately after starting injections, and other thyroid hormones decreased, so my levothyroxine dose was increased. Once all the tuning was complete, I started feeling much better.

[rogergee in reply to WhyAmISoTired]

Thanks for this. It's very interesting. I suspect it's something that isn't very easily addressed for some people, especially those needing T3 too.