How does the body get vitamin D from the sun? Why is vitamin D not actually a vitamin? Why do we need it? What foods are high in vitamin D? What happens if we get too much? Why are there so many types of vitamin B (e.g. B1, B2, B3, B6, B9, etc), but only one type of some other vitamins (such as C and D)?
... We explain like i'm five!
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