Thanks for this. I have IBS and began taking a 2000 IU supplement of Vitamin D awhile back for unrelated reasons. Maybe I'll bump it up to 3000 to see if it helps.
No worries at all! I'm in the same boat. FYI some patience is needed as it apparently takes 3-6 months for changes in vitamin D input to make its way into the bloodstream and show effects [1]. I've just started supplementing 5000 IU as I get very low levels of sunlight. Fingers crossed that this helps the both of us.