Have you had full blood count and iron panel done?
Have you been diagnosed with iron deficiency anaemia.
For thyroid hormone to work ferritin needs to be at least 70, preferably half way through range. Ideally you need an iron infusion so ask for one, but you may only be prescribed tablets which will take months to raise your level whereas an infusion will raise your level within 24-48 hours.
Take each iron tablet with 1000mg Vitamin C to aid absorption and help prevent constipaton. Always take iron 4 hours away from thyroid meds and two hours away from other medication and supplements as it will affect absorption.
You can help raise your level by eating liver regularly, maximum 200g per week due to it's high Vit A content, and including lots of iron rich foods in your diet apjcn.nhri.org.tw/server/in...
If you have iron deficiency anaemia then the correct treatment is Ferrous Fumarate two or three times a day, and with your ferritin level I think it should be the maximum. Make sure you get this if you do have this diagnosis.
As your doctor why he has ignored your folate deficiency.
Do you have any signs of B12 deficiency b12deficiency.info/signs-an... If so then post on the Pernicious Anaemia Society forum for further advice, quoting your folate, B12 and ferritin results, along with iron deficiency information (if confirmed) plus any signs of B12 deficiency you may be experiencing healthunlocked.com/pasoc You may need testing for Pernicious Anaemia and you may need B12 injections. Whatever they say, discuss with your GP and don't start any folic acid supplement until any other necessary investigations have taken place.
I have read (but not researched so don't have links) that BCSH, UKNEQAS and NICE guidelines recommend:
"In the presence of discordance between test results and strong clinical features of deficiency, treatment should not be delayed to avoid neurological impairment."
And an extract from the book, "Could it be B12?" by Sally M. Pacholok:
"We believe that the 'normal' serum B12 threshold needs to be raised from 200 pg/ml to at least 450 pg/ml because deficiencies begin to appear in the cerebrospinal fluid below 550".
"For brain and nervous system health and prevention of disease in older adults, serum B12 levels should be maintained near or above 1000 pg/ml."
Folate should be at least half way through it's range.
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Vitamin D 34.6 (25 - 50 deficiency)
Taking 800iu D3
Well, 800iu D3 isn't going to raise your level. It is hardly a maintenance dose for someone with a reasonable level. You are just 4.6 away from the level where you'd be given loading doses, so discuss this with your doctor and ask to see if he will give them to you.
Treat for vitamin D deficiency if serum 25-hydroxyvitamin D (25[OH]D) levels are less than 30 nmol/L.
For the treatment of vitamin D deficiency, the recommended treatment is based on fixed loading doses of vitamin D (up to a total of about 300,000 international units [IU]) given either as weekly or daily split doses, followed by lifelong maintenance treatment of about 800 IU a day. Higher doses of up to 2000 IU a day, occasionally up to 4000 IU a day, may be used for certain groups of people, for example those with malabsorption disorders. Several treatment regimens are available, including 50,000 IU once a week for 6 weeks (300,000 IU in total), 20,000 IU twice a week for 7 weeks (280,000 IU in total), or 4000 IU daily for 10 weeks (280,000 IU in total)."
Each Health Authority has their own guidelines but they will be very similar. Once the loading doses have been completed you will need a reduced amount (not the 800iu prescribed) to bring your level up to what's recommended by the Vit D Council and then you'll need a maintenance dose (not the 800iu prescribed) which may be 2000iu daily, it's trial and error so it's recommended to retest once or twice a year to keep within the recommended range. You can do this with a private fingerprick blood spot test with City Assays vitamindtest.org.uk/
If you aren't allowed the loading doses then come back and suggestions can be made for buying your own supplement and dose to take.
There are important cofactors needed when taking D3
D3 aids absorption of calcium from food and K2-MK7 directs the calcium to bones and teeth where it is needed and away from arteries and soft tissues where it can be deposited and cause problems.
D3 and K2 are fat soluble so should be taken with the fattiest meal of the day, D3 four hours away from thyroid meds.
Magnesium comes in different forms, check to see which would suit you best and as it's calming it's best taken in the evening, four hours away from thyroid meds
I imagine that SlowDragon has given you information about Hashi's, these are the links I usually give (sorry if you already have some of them), the more information you have, the more you can help yourself.
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