>The clincher that proved it to myself was that in February, I ran out of
>vitamin D.  The sypmtoms came back just as strong as before.  The next
>Saturday, I got more vitamin D.  I was back to normal on Sunday.

        That is really amazing, Lisa!  I am going to try that next winter.
As a matter of fact, I WAS giving Paul A and D supplements at the time, for
an actinic keratosis (pre-cancerous ) on his nose.  I think I will use it as
a health hint suggestion in the late fall.
        I always recommend D supplements for people in our area. We don't
get out much for 4 months of the year.  D deficiency is the most common def.
in the elderly.  It really helps prevent the constant cold (virus) syndrome.
        Independent observations are the beginnings of good studies.