Sunshine is edible.
There are only two kinds of “natural” vitamin D in the world.
Fresh vitamin D2 is created when you expose almost any vegetable product (even straw) to ultraviolet light.
It’s called calciferol.
Fresh vitamin D3 is created when you expose almost any animal product (even feces) to ultraviolet light.
It’s called cholecalciferol.
Store-bought vitamin D products are all “stale,” and, to a greater or lesser degree, toxic.
Vitamin D has three main absorption peaks …
269 nanometers is classified as long-wave UV radiation (UVA) – the kind that tans you.
280 and 293 nanometers are classified as mid-wave UV radiation (UVB) – the kind that burns you.
UVA rays = 400-315 nanometers
UVB rays = 315-280 nanometers
UVC rays = 280-200 nanometers
VUV rays = 200-100 nanometers
EUV rays = 40-5 nanometers