Fatigue is my permanent bugbear, it is why I don't work (for money, anyhow).
I take sublingual B12 tablets, which dissolve into the bloodstream throught the mucus membrane under the tongue. Striaghtforward B12 supplements to be taken orally for absorption through the gut won't work with Crohnies, it need to be straight into the blood because the gut will not absorb it.
I actually found that the B12 did not work to begin with. It was only when I started taking B5 - calcium pantothenate - together with B12 that I found the overrevving/underrevving, ready to fall in a heap feeling started to lift somewhat. More to the point, I found the brainfog I have had for thirty years (we don't really do B12 in the UK
) was greatly improved, when I wanted to remember things it was no longer like looking in a coal cellar at midnight for a black cat ! I still have problems, but as an attorney I would guess that declarative/short term memory is important for you, and hopefully any problems you might have with this may well improve with B12. We get a lot of folks who talk about
a sudden improvement in energy levels and concentrationonce they are put on it. I still get bad days, it is a palliative for symptoms, it does not seem to help the body actually fight the disease except perhaps indirectly.
As for being anaemic, I believe there is a specific form of autoimmune anaemia where the blood cells themselves are attacked by the immune system, and that this may be involved in Crohn's Disease. I know I certainly get more fatigued when exercising, if I have severe inflammation in my gut or joints. This tends to be less mental than lack of B12 causes, but really they tend to just encourage each other, with anaemia sneaking up slowly after a period of say, two or three weeks. The dead giveaway about
anaemia is that it leaves me breathless; low iron = low oxygen = panting for breath.