Without directly suggesting dietary supplementation, Diffey concludes:"[...] current advice about modest sun exposure during the summer months does little in the way of boosting overall 25(OH)D levels, while sufficient sun exposure that could achieve a worthwhile benefit would compromise skin health."
There is so much going on along the lines of Vitamin D research that it will be hard for me to keep you up-to-date. Nevertheless, I'll do my very best. So stay tuned!"Failure to understand the nature of human exposure to sunlight has led to misguided advice concerning the sun exposure necessary for an adequate vitamin D status."