In the spring, I was found to be very deficient in vit D (blood results were 10) so I took high doses (15,000 IU daily) for three months and was able to raise it to 50ish. When I felt no better I got a bit dejected and unreliable, taking 5000 IU when I remembered but probably not every day, and my next test (autumn) showed I was back where I started again - 10. I still went through bottles of the stuff and I still ended up severely deficient.
My vit D was tested last week and it is up to 98! I had only just begun to supplement again (5000-10,000 IU per day) a week or two before the test, so it can't be that. Here are the only things I can think of that have changed.
1) I spent five weeks (Nov/Dec) in sunnier climes. My family in the US were hit quite hard by the massive storm at the end of Oct and I went over to help. I was very busy and spent most days out and about, mostly in a car, but still out of doors much more than usual. Of course it was still wintry weather, but much brighter than here. Can a bit of sun help that much, even when you're all covered up?
2) Because my family were displaced, I had to eat out a lot (no kitchen!) and ate a lot of eggs and dairy, like cheese omelettes for breakfast and lunch virtually every day. I normally avoid milk and cheese. I've had an unprecedented outbreak of psoriasis in places I've never had it before, which I think could be related so I guess that could be a tradeoff.
3) A friend who was deficient suggested that I a) spread my doses out throughout the day and b) take them with some fatty food, which I've been trying to do. It's harder to remember to take two doses than to take one, so I sometimes miss the second dose.
Any thoughts? I'd like to maintain this level but as I don't know how it happened it's hard to know what to keep doing!