Vitamin D
Been doing some reading to make sure I'm covered and found that the reccommended daily levels vary widely.
I do eat fine for dietary Vit D but have low sun exposure. A recent Australian position (2010) seems to be an order of magnitude above ours here in UK, which has me confused. Anyone?
Wiki - You need 200 IU
http://en.wikipedia.org/wiki/Vitamin_D#cite_note-austpre01-26
Sun limited individuals in Denmark need 600 - 1000 IU
http://www.ncbi.nlm.nih.gov/pubmed/10692090
Australia - normal people need 800-1000 IU
http://www.australianprescriber.com/magazine/33/4/103/6