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delecti 7 months ago | parent | context | favorite | on: Vitamin D reduces incidence and duration of colds ...

And humans aren't dogs.

wongarsu 7 months ago [–]

Most definitions of the word vitamin are not specific to humans. Wikipedia talks about "organisms", Britannica about "higher animal life", Webster about "most animals and some plants"

lxgr 7 months ago | [–]

What is and isn't a vitamin by definition varies from species to species.

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