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One important factor in vitamin studies is the prevalence of vitamin deficiency in a particular population. E.g. vitamin D in the US might not be as effective
by rustamm 6y ago
One important factor in vitamin studies is the prevalence of vitamin deficiency in a particular population. E.g. vitamin D in the US might not be as effective because it is already added into many food products, e.g. milk, which is not the case for other countries.
- Noxmiles 6y agoIn Germany (probably in most european countries) it's not allowed to add vitamin D to food. So it's really important to know about it. Still, almost no one knows about it...
- sandos 6y agoVitamin D is added to milk and butter in Sweden, even obligatory for some kinds! But that's because of our sad lack of sunshine for many months on end of course, so I expect the other nordic countries does something similar.
- kevinmchugh 6y agoEven within a population, vitamin D deficiency will vary by lifestyle, skin tone, and climate. All three of which vary a lot in the US.
- deelowe 6y agoMy understanding is that even the definition of what constitutes deficient isn't settled due to how it's measured. For example, many African Americans show deficient even though it's believed they aren't.