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An analysis of the vitamin D intake of children and adults in the United States revealed that they were unable to achieve the RDA for vitamin D from any dietary sources.
There is potentially a great upside (in terms of improving overall health and well-being) to increasing serum 25(OH)D levels above 30 ng/mL.
I totally disagree with you that D2 and D3 are equally effective. Vitamin D3 is much closer to what the body makes naturally from exposure to sunlight. I've also come across several people over the years who were using prescription D2 and their blood levels weren't coming up, and when they switched to OTC D3 their levels came up quickly. Check out the "Vitamin D Council" for more info.From the section Type of Vitamin D Supplementation I would say vitamin D2 and D3 are equally effective, or close enough, so D2 is probably fine for people who want to avoid animal products.
Conclusions: This meta-analysis indicates that vitamin D3 is more efficacious at raising serum 25(OH)D concentrations than is vitamin D2, and thus vitamin D3 could potentially become the preferred choice for supplementation.
"these studies offered little information for lower doses, which are more realistic in terms of what individuals are likely to be able to consume within their daily diet and gain from sunlight exposure and the concentrations of ergocalciferol and cholecalciferol available in commercial supplements.
Thus, in combination with the small and underpowered study populations (n = 19–89) and lack of data in lower doses, there is a clear need for additional research to ascertain whether the results obtained within the studies included in this review translate across the entire dose-response curve.
In conclusion, our results suggest a favoring toward cholecalciferol rather than ergocalciferol supplementation with respect to the more effective improvement of vitamin D status. When the frequency of dosage administration was compared, there was a significant response for vitamin D3 when given as a bolus dose (P = 0.0002) compared with administration of vitamin D2, but the effect was lost with daily supplementation."
@keenly what are the 1,25 dehydroxy vitamin D results?? thats important i think, when deciding to supplement or not
Although 1,25(OH)D is the biologically active form, it provides no information about vitamin D status because it is often normal or even elevated in children and adults who are vitamin D deficient.
Should I supplement?
I thought there was a train of thinking that Vitamin D is not ideal for us. Is this test helpful?
Wow that's low. Do you supplement with vitamin D? Also, just for the future, I would black out your personal info in the document.
It was not available when I did this. Doesn't that one show inflammation?@keenly what are the 1,25 dehydroxy vitamin D results?? thats important i think, when deciding to supplement or not
Nobody should supp vitamin d get through sun and cod liver oilShould I supplement?
I thought there was a train of thinking that Vitamin D is not ideal for us. Is this test helpful?
That what I thought. I have heard doctors say no supplement on the market is ideal.Nobody should supp vitamin d get through sun and cod liver oil