Healthy soil and sustainable growing

["John D'hondt" <dhondt@eircom.net>]

Seems that natural living humans (mostly naked) have around 65-75 ng/dl vit 
D in their blood. Some doctors estimate that all disease could be reduced by 
50% if that were still the case in modern populations. I think the average 
in the US is below 15 ng.
Vitamin D is made in our skin from cholesterol by sunlight (specific UV B). 
Sunbloc or sunning behind a glas window has a negative effect.
john

> Vitamin D May Influence Genes for #Cancer, Autoimmune #Disease 
> http://tinyurl.com/28ce25r
>
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