A decade ago, vitamin D achieved superstar status in the nutrition community.
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Claims were wide and far reaching, but scientific support is unclear. It seems to help with Multiple Sclerosis, and bone calcuim absorption. There is proof that vitamin D does help with a problem that is not common called rickets.
Nutritionists are in agreement on vitamin D helping bones by better calcium absorption, but they disagree on how that actually happens.
Here is a good article on what vitamin D actually does in the Body, and has a lot of good information:
https://www.sciencenews.org/article/vitamin-d-supplements-lose-luster
All vitamins are important, and should be a regular part of supplements used to assist the Standard American Diet (SAD)
So do not stop taking vitamin D just because some exaggerated claims were made, the vitamin D is still needed.
There is also good science that Vitamin D (combined with calcium) does fight Cancer, reducing risk in post metopausal women by 50%, referenced in this article:
https://academic.oup.com/ajcn/article/85/6/1586/4633053
Science supports reduced cancer risk in a broad set of cases refernced here:
https://academic.oup.com/jnci/advance-article/doi/10.1093/jnci/djy087/5035027
Bottom line, good nutrition is a noble goal. The Body works better when it has the required supplies it needs to heal damage when damage occurs. The best source of nutrition is as close to fresh as possible, so use naturally extracted vitamins and supplements. Better yet, eat the plants that contains these vitamins, in their raw form, and get them all! I am having to rely on naturally extracted vitamins myself, because I do not have the fortitude or the time, for the raw veggies right now!
If I can get you to consider natural supplements, my time spent here was worth it.
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