TL;DR: I have the MTHFR 677T mutation (amongst others) and I don't know how to interpret all the information that's out there or how best to treat my condition.
Through 23andMe I discovered that I have this mutation (homozygous). I've done a lot of reading over the last few weeks. I've been wondering whether it could explain a lot of the inexplicable symptoms I've been having over the past few years, including brain fog, fatigue, sleep difficulties, heart pain and palpitations, unexplained weight loss, joint/muscle/nerve pains, slow healing injuries and skin issues, amongst others, always without the doctor being able to explain it.
My basic understanding:
- My body cannot process folic acid very well (about 30% as efficient). I do not know if this applies only to the artificial folic acid that is found in supplements and fortified foods, or if I also can't process folate that you get from leafy vegetables. But I think I've probably suffered from folate deficiency quite often in my life.
- I believe my body also doesn't process vitamin B12 very well.
- This can lead to elevated homocysteine levels in the blood, which is bad.
- Supplementation with folic acid or B12 is ineffective because my body cannot process it very well. In fact, supplementation with folic acid can make it worse, because the folic acid will just build up in the blood and inhibit the active forms from being taken up. This means you can have elevated folic acid levels in the blood but still be deficient in folate. This means I should avoid fortified foods like cereals.
- Folate (or folic acid?) supplementation can mask vitamin B12 deficiency, which can lead to "pernicious anaemia". Vitamins B9 and B12 need to be in balance.
- I should supplement with bioavailable forms of the vitamins, e.g. 5-methyltetrahydrofolate and methylcobalamin.
- However, even if you do this, if you take them in the wrong proportions you can get a "methyl trap". I don't fully understand this, but I think the solution is to take more B12.
I started taking Metafolin and methylcobalamin nearly a week ago, and I felt incredible. I didn't realise how chronically fatigued I was until suddenly I felt wide awake during the day, and a great sense of wellness. A lot of my pains reduced and I was able to think clearly, and I was sleeping better. It was like a switch had been flicked in me and my body was suddenly working.
Since then, I've been reading up on it more and particularly about how other people taking these two supplements have experienced bad side effects and had to stop taking them or take them in different amounts, or how they've had to stop eating vegetables, or how they've had a methyl trap occur. Obviously there is more than a single nucleotide polymorphism involved in methylation, so not everybody is the same. I've even read that some people with this mutation are fine and don't need supplements.
Another issue is that I have other mutations which affect the methyl cycle, but they are less well-documented. Some of them might make me an over-methylator rather than an under-methylator, and by taking these supplements I may be doing harm. I don't know though. I can't find enough information about it.
A lot of the websites out there are triggering my quackery alarms. Most of the forums seem to be filled with hypochondriacs, many of whom also think they have Lyme disease, or are treating their child who has ADHD or autism (probably due to Dr. Amy Yasko). Many of the doctors seem to have qualifications from suspicious nutrition schools rather than real medical qualifications and want you to take brand name supplements that they no doubt make money from.
I'm really struggling to distinguish the valuable scientific information from the hype and the quackery. I'm really looking for any advice about this mutation and how to best treat it.