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Vitamin D3 instead of D2 category in VitaminDWiki starts with
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Some of the items
Physicians Desk Reference still only lists D2, but not Vitamin D3 – Sept 2025
Vitamin D3 better than D2, especially if non-daily or high dose - meta-analysis Sept 2021
Vitamin D2 decreases levels of D3 (again) and visa versa – RCT Jan 2019
It’s (way past) time to stop prescribing with Vitamin D2 (ergocalciferol) – Oct 2018
If you have a vitamin D prescription, be sure that it is for D3– June 2017
Vitamin D reduces risk of cause specific death, unless it is D2 – meta-analysis BMJ April 2014
Vitamin D2 should not be used as a Vitamin supplement for any mammal – Oct 2006
Loading dose of Vitamin D2 REDUCED vitamin D blood in a third of the patients – Jan 2015
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VitaminDWiki – Overview Vitamin D3 not D2 contains
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Vitamin D2 has been known for a long time to not be as good as vitamin D3
VitaminD2 was the first to be discovered and, until 2011, was the only one that most doctors could prescribe
The D3 form has been known for many decades, but the medical profession has not yet adapted - after all, only 12,000 papers on D3 asof Oct 2023.
Several recent studies have shown that vitamin D2 actually reduces the levels of D3 in the blood
AND, worse still, D2 actually INCREASES a health problem , instead of reducing it, the way vitamin D3 does
Notes:
Some multivitamins and milk/food fortifications still use D2, but in such low quantities that it can be ignored.
Some people buy D2 because it is vegan, being unaware that there are vegan forms of D3
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VitaminDWiki – Overview Alzheimer's-Cognition and Vitamin D contains:
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FACT: Cognitive decline is 19X more likely if low vitamin D
FACT: Dementia is associated with low vitamin D levels.
FACT: Alzheimer’s Dementia 2.3X more likely in elderly if low vitamin D – Dec 2022
FACT: Dementia is associated with low vitamin D - many studies
FACT: Alzheimer's Disease is 4X less likely if high vitamin D
FACT: Every single risk factor listed for Alzheimer's Disease is also a risk factor for low vitamin D levels
FACT: Elderly cognition gets worse as the elderly vitamin D levels get even lower (while in senior homes)
OBSERVATION: Reports of increased vitamin D levels result in improved cognition
OBSERVATION: Alzheimer’s patients 3X more likely to have a malfunctioning vitamin D receptor gene – 2012
OBSERVATION: Alzheimer's Disease has been seen to halt when vitamin D was added.
OBSERVATION: Alzheimer’s is associated with all 7 of the genes which restrict vitamin D
OBSERVATION: 39 vitamin D and Alz. or Cognition intervention trials as of Sept 2018
OBSERVATION: 2 Meta-analysis in 2012 agreed that Alzheimer's Disease. associated with low vitamin D
OBSERVATION: 50X increase in Alzheimer's while decrease in vitamin D
OBSERVATION: Vitamin D reduces Alzheimer’s disease in 11 ways
OBSERVATION: Alzheimer’s cognition improved by 4,000 IU of vitamin D
OBSERVATION: Plaque removed in mice by equiv. of 14,000 IU daily
OBSERVATION: DDT (which decreases Vit D) increases risk of Alzheimer's by up to 3.8X
OBSERVATION: 2% of people have 2 copies of the poor gene reference: Alz Org
OBSERVATION: Genes do not change rapidly enough to account for the huge increase in incidence
OBSERVATION: End of Alzheimer's videos, transcripts - many studies protocol has been very successful
- It adjusts Vitamin D, B-12, Iron, Omega-3, food, etc, and can now be done at home.
FACT: Vitamin D is extremely low cost and has very very few side effects
CONCLUSION: Everyone concerned about cognitive decline or Alzheimer's Disease should take vitamin D
PREDICTION MET: By 2024 Omega-3 and high dose Vitamin D will be found to reverse Alzheimer's in humans
- There are 13+ Alzheimer’s meta-analyses in VitaminDWiki
- There are 97+ Alzheimer’s studies in VitaminDWiki
- Dementia is associated with low vitamin D - many studies 50+ studies
- 16+ studies in both categories Cognitive and Omega-3
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