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Nobody has 0 intake, that is a useless control; nor would any IRB sign off on such a study, because it would be harmful to the subjects.
by fc_barnes 7y ago
Nobody has 0 intake, that is a useless control; nor would any IRB sign off on such a study, because it would be harmful to the subjects.
- ebg13 7y ago> Nobody has 0 intake And thus we have ourselves a quandary, but truth isn't diminished by the practical limits of safe experimentation. We don't have to lie just because. > it would be harmful to the subjects. That doesn't make the title precise or the observation inapt.
- slothtrop 7y agoIf you avoid animal foods the only dietary vitamin D really is from fortified products. However we also synthesize it, albeit poorly as adults, particularly with lower exposure to the sun.
- scottlocklin 7y agoThe experiment itself may be useless control; most people get D vitamins from the sun. How do we know the cohorts got the same D from sun exposure?
- AstralStorm 7y agoShould use a blood tests for vitamin D status, probably calcium, phosphate and K too instead of relying on self reported diet.
- kibibu 7y agoPlenty of people have 0 supplementation though.