In the Winter months, where I am unable to receive the benefits of sunshine, I take a high quality natural supplement of 2000iu's of Vitamin D3 per day: something that not everyone here will agree with (I can hear Andrew moaning already), but you have to bear in mind that the recommended dosage of 2000ius per day in the winter, has been reported to prevent 77% of ALL cancers in clinical trials. It has also been reported from several well respected sources, that most people are Vitamin D deficient
It's alright for Andrew, eh Chris, living in Australia. lol I think we do need our supplements living here.