MrsD,
I struggled through the Thread, one-eyed, some interesting stuff in there. I checked my meds Patient Info Sheet - no contraindications with D from them, BUT increases absorbtion of Atorvastatin - Aaargh!

Kitt,

A good article which made me dig deeper. Some (about 35-40%) of UVA can penetrate plain window glass. This, I assume, is reduced by thickness, double glazing.

And Fortified foodstuffs and Supplementation are not as widespread over here as one would like to think. So figures are probably worse for us in general.

Dave.