COVID and vitamin deficiencies: Have you been tested?
Q: Are there any linkages between COVID and Vitamin deficiencies?
Background: I had COVID (positive test) in December of 2020. Serious at-home symptoms for 5 days then a typical recovery. I had both Moderna shots in March. I was experience fatigue and fog in Feb and March. Almost immediately after my 2nd vax, those symptoms seemed to go away and I was feeling pretty good until around the middle of Aug when the fatigue and fog returned. I was consistently having 2-3 days a week when I couldn't sit without going to sleep. I had a physical in late Sept and my Dr was sympathetic to the realities of long covid and said my symptoms were all consistent with everything she knew about it, but we should do some fasting labs just to make sure it wasn't something else. The results came back with very low Vitamin D, B12 so low it was just reported as <50, and Ferritin (iron deficiency) a few points below normal. I'm now on a supplement regiment of 8-10k of B12 daily with about 2k of D, and a multi vitamin with iron three times a day. I have not taken supplements since I was as kid.
I know I could me more specific with all that, but my question is, are there any indicators of linkages between COVID and Vitamin deficiencies, or am I most likely just at a coincidence of tipping points? I did get my Moderna booster yesterday with hopes that it will help, as the second shot seemed to have helped in April. I'm not having any side-effects today at all, other than the typical fog and fatigue.
Thanks for the wisdom of any experience on this topic.