Green politics always places great emphasis on better and less expensive healthcare by reducing toxins released into the environment, promoting wellness programs, etc. Vitamin D just might become a key ingredient in preventative healthcare, especially for counties in polar regions (both north and south) of the planet. After watching a compelling video lecture with Dr. Reinhold Vieth a few years ago, I started taking vitamin D supplements in winter and ever since have badgered family and friends to do the same. Does it work? I dunno — I’m just a sample of one, but I think I feel better and get fewer colds in winter. Every month new studies are churned out which demonstrate links between diabetes, cancer, etc with vitamin D deficiency. Here’s a lecture by Dr. Frank Garland of the U.S. Naval Health Research Centre that makes an even stronger case for vitamin D’s role in human health. Definitely worth considering.