First, natural vitamin D, which is found in small amounts in a few foods and produced in
the body by exposure to sunlight, degrades quickly, while synthetic versions of vitamin D are less susceptible to breakdown.
Not exact matches
But Michos says that sun
exposure may not be the whole story of the direct relationship found between exercise and vitamin D levels, since vitamin D produced
by the skin after
exposure to sunlight tends
to level off when the
body makes enough, and the levels in these participants didn't show signs of doing so.
These are generated in our
body by its essential use of oxygen and on the skin
by exposure to sunlight, airborne pollutants and some synthetic sunscreening agents.
Vitamin D3 (Cholecalciferol) is the form of Vitamin D produced
by the
body after
exposure to sunlight.