Table of contents
Weixia Wang 1 YijinLi 1 Xianfang Meng 1
Neurodegenerative diseases, featured by progressive loss of structure or function of neurons, are considered incurable at present. Movement disorders like tremor and postural instability, cognitive or behavioral disorders such as memory impairment are the most common symptoms of them and the growing patient population of neurodegenerative diseases poses a serious threat to public health and a burden on economic development. Hence, it is vital to prevent the occurrence of the diseases and delay their progress. Vitamin D can be transformed into a hormone in vivo with both genomic and non-genomic actions, exerting diverse physiological effects.
Cumulative evidence indicates that vitamin D can ameliorate neurodegeneration by
- regulating pertinent molecules and signaling pathways including maintaining Ca2+ homeostasis,
- reducing oxidative stress,
- inhibiting inflammation,
- suppressing the formation and aggregation of the pathogenic protein, etc.
This review updates discoveries of molecular mechanisms underlying biological functions of vitamin D in neurodegenerative diseases including
- Alzheimer’s disease,
- Parkinson’s disease,
- multiple sclerosis, and
- vascular dementia.
Clinical trials investigating the influence of vitamin D supplementation in patients with neurodegenerative diseases are also summarized. The synthesized information will probably provoke an enhanced understanding of the neuroprotective roles of vitamin D in the nervous system and provide therapeutic options for patients with neurodegenerative diseases in the future.
Download the PDF from VitaminDWiki
VitaminDWiki - Overview Parkinson's and Vitamin D contains
- Vitamin D associated with Parkinson’s Disease in 55 studies, more studies needed- March 2022
- Parkinson patients: 60 % taking Vitamin D – Dec 2019
- Low Vitamin D increases Parkinson's by 3X– July 2010 only a 30 year test, need more study
- Parkinson's disease prevented by Vitamin D, but small doses do not treat it - Aug 2023
- 10 clinical trials for PD with vitamin D intervention as of June 2023
- Parkinson’s Disease Summer School – alternative therapies included 60-80 ng of Vitamin D – Sept 2019
- Parkinson's category has
- Associated with PD are: Meta-analyses (
12 ), Cognition ( 21 studies), Multiple Sclerosis ( 15 studies), VIRUS ( 4 studies), Omega-3 ( 3 studies), Vitamin D Receptor ( 11 studies)
- Note by the Founder of VitaminDWiki: I have twice recommended lots of Vitamin D to treat PD. Both got much better, but one had his doctor him cut back to just 2,000 IU. All of his recovery got reversed. With lots of vitamin D he could sing and bike, but now he can barely talk or walk
VitaminDWiki - Overview Alzheimer's-Cognition and Vitamin D contains
- 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
- 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: By 2024 Omega-3 and high dose Vitamin D will be found to reverse Alzheimer's in humans
- As of 2018 that combination has worked well with Multiple Sclerosis, Sleep, and Cluster Headaches
There are 12+ Alzheimer’s meta-analyses in VitaminDWiki
There are 91+ Alzheimer’s studies in VitaminDWiki
- End of Alzheimer's video and transcript - June 2023
Dementia is associated with low vitamin D - many studies 50+
16+ studies in both categories Cognitive and Omega-3
The End of Alzheimer's and Dementia if adjust Vitamin D, B-12, Iron, Omega-3, etc.
Customizing the types of treatment to the individual results in reversing Alzheimer's
VitaminDWiki - Dementia is associated with low vitamin D - many studies
VitaminDWiki - Overview MS and vitamin D contains
Clinical interventions have shown that Vitamin D can prevent, treat, and even cure Multiple Sclerosis, at a tiny fraction of the cost of the drugs now used to treat it, and without side effects.
- Fact: Low Vitamin D results in higher risk of getting MS
Increase latitude leads to decreased Vitamin D, which leads to increased risk of MS
Dark skinned people are far more likely to get MS (dark skin people typically have low vitamin D)
Elderly (who typically have low vitamin D) are more likely to get MS
Is there increased risk in people who already have diseases associated with low vitamin D - TB, for example ? ? ?
Women typically have 3X increased MS risk then men (note: women typically have 20% lower levels of vitamin D than men)
Exception: women in very sunny climates and dark-skinned women have the same MS risk as men
Obese are 60% more likely to get MS
Multiple Sclerosis 42X more likely if light brown skin and smoke (both associated with low vitamin D) – July 2020
MS recurrence is much higher in spring - the lowest time of the year for vitamin D
increase in clouds/rainfall (which reduces available Vitamin D) is associated with increased risk of MS (Scotland, Western Washington)
MS incidence has increased 70% in a decade while the incidence of vitamin D deficiency doubled
Less MS in those with outdoor occupations PDF file, not a web page
- Fact: MS uses up Vitamin D
- Fact: Lower vitamin D (due to MS using up Vitamin D while fighting the disease) results in many other health problems (such as broken bones), so depleted vitamin D levels must be restored.
- Fact: Vitamin D looks so promising for preventing and treating MS that there were 25 INTERVENTION clinical trials as of Feb 2014
- Fact: Vitamin D reduced the MS relapse rate far better than Fingolimod which is now used for that purpose.
- Note: Fingolimod costs $25,000/year while vitamin D, which works better and has no side effects is 1000 times less expensive.
- Fact: 98% of the genes affected by Interferon are also affected by Vitamin D
- Note: 1 week of Interferon = $4,700, 1 week of vitamin D 10,000X lower cost
- Fact: MS Doctors in Brazil recommending 40-100 ng/mL of Vitamin D
- Fact: Many MS forums are recommending vitamin D to treat MS, with some taking 5,000 to 10,000 IU daily
Observation: Risk of going from pre-MS to MS reduced 68 percent with 7100 IU vitamin D – RCT Dec 2012
- This is an observation instead of a fact - it has not yet been confirmed.
- Fact: VERY LARGE doses of vitamin D have CURED 2,000 people of MS in Brazil
- Controversy: UVB fron sunlight or UVB bulb may be BETTER than Vitamin D for reducing the risk of getting MS
- Hypothesis: In addition to Vitamin D there are many other photoproducts produced by UVB that may promote health.
Summary: lack of consensus on how much to prevent, treat, or cure MS.
How Vitamin D fights neurodegeneration (Multiple Sclerosis, Alzheimer’s, Dementia, etc) – Jan 2023
- How much Vitamin D to prevent many diseases - such as MS
- How much Vitamin D is needed to treat MS? There is currently no agreement
The recommendations range from 40 to 100 ng - which can result of a dose ranging from 3,000 to 20,000 IU/day
- How Vitamin D is needed to Cure MS?: It appears that 20,000-140,000 IU daily may be needed to CURE the disease
You must be under the supervision of a doctor who knows what to watch for in your individual situation.
High doses of Vitamin D cannot be used as a monotherapy.
You will need to adjust the cofactors: Typically increasing Magnesium and Vitamin K2, and reducing Calcium intake.
Your doctor will monitor these and might increase your intake of Vitamins B2, C, as well as Omega-3899
- Epstein-Barr virus increases risk of Multiple Sclerosis by 32X - Jan 2022
- Multiple Sclerosis treated by Vitamin D, recommends investigating high dose Coimbra - Oct 2021
- Multiple Sclerosis patients had fewer COVID-19 problems (Note: many MSers take Vitamin D) – April 30, 2021
- Vitamin D Resistance hypothesis confirmed by Coimbra high-dose vitamin D protocol – April 2021
- Multiple Sclerosis relapses cut in half by 100,000 IU of Vitamin D every 2 weeks– RCT 2019
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- Associated with PD are: Meta-analyses (