Vitamin D

This report in Science Daily is interesting. I'd want to see verification before I took any action though. And I'd want to look at the paper.

Marshall's research has demonstrated how ingested vitamin D can actually block VDR activation, the opposite effect to that of Sunshine. Instead of a positive effect on gene expression, Marshall reported that his own work, as well as the work of others, shows that quite nominal doses of ingested vitamin D can suppress the proper operation of the immune system.

Since the body generates its own vitamin D, there really isn't any need for supplemental D anyway. If this pans out (a really big IF), then vitamin D milk is a bad idea.