BMC Neurol November 2019 PMID 31722673

Vitamin D deficiency as a risk factor for dementia and Alzheimer's disease: an updated meta-analysis.

Bingyan Chai, Fulin Gao, Ruipeng Wu, Tong Dong, Cheng Gu, Qiaoran Lin, Yi Zhang

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Mentions

34
Peak: 3 in Nov 2019
across 5 sources since Nov 2019

Extended reach

1,489,389
potential audience

Total likes

29,294

Video views

1,406,288

Mentions per month

Nov 2019 – Dec 2025

Where it's discussed

  • X / Twitter14 posts
  • News9 articles
  • YouTube6 videos
  • Blogs3 articles
  • Facebook2 posts

AI synopsis

What people are saying

The collective responses reflect strong agreement with the study's conclusions, especially with mentions of stronger links in severe deficiency cases and vulnerable populations like Black and South Asian groups. The tone varies from scientific reference to general concern, with posts emphasizing the importance of vitamin D for mental health and highlighting how the findings could alter health strategies.

AgreementStrong agreement

Most discussions acknowledge and support the findings of the meta-analysis, emphasizing the link between vitamin D deficiency and neurodegenerative diseases.

InterestModerate interest

Comments show curiosity about the demographic differences and implications of vitamin D deficiency, indicating moderate interest.

EngagementHigh engagement

Many posts reference specific study results, such as the increased risk associated with severe deficiency and demographic disparities, demonstrating deep engagement.

ImpactHigh impact

The discussions highlight the potential impact of maintaining adequate vitamin D levels on brain health, suggesting the findings could influence health practices and awareness.

Abstract in brief

  • The meta-analysis found that vitamin D deficiency is significantly associated with an increased risk of developing dementia and Alzheimer's disease, with the risk being higher as vitamin D levels decrease.
  • Specifically, severe vitamin D deficiency (below 10 ng/mL) shows a stronger link to dementia and Alzheimer's compared to moderate deficiency (10-20 ng/mL).
  • The study emphasizes the potential importance of maintaining adequate vitamin D levels as a factor in reducing the risk of these neurodegenerative conditions.]

Top posts

Most liked on X and Bluesky
islieb?
@Islieb · X

@focusonline Niedrige Vitamin-D-Werte sind nach etlichen Studien deutlich mit einem höheren Risiko für Alzheimer und Demenz assoziiert. https://t.co/oSr3slVwRK https://t.co/z1nBQ0kHBG https://t.co/Ue71oNnQ4N

Mar 21, 2021 · 9 likes · 37,098 followers View post →
Ekoloji-Ekonomi
@EkolojiE · X

Bilişi korumak için D vitamini önemli midir? Demans ve Alzheimer hastalığı için bir risk faktörü olarak D vitamini eksikliği: güncellenmiş bir meta-analiz: "D vitamini eksikliği ile hem demans hem de AD arasında önemli ilişkiler vardır." https://t.co/Iewb8BLeZy https://t.co/1b0jSvPCfe

Jan 8, 2021 · 4 likes · 1 share · 1,892 followers View post →
Nuala Woulfe
@Nuala_Woulfe · X

Vitamin D deficiency as a risk factor for dementia and Alzheimer’s disease: There are stronger associations between severe vitamin D deficiency (< 10 ng/ml) and both dementia and AD meta-analysis | BMC Neurology | Full Text #study #vitaminD #health https://t.co/gChkBTSu7V

Sep 26, 2021 · 1 like · 1 share · 1,785 followers View post →
BMC Series
@BMC_series · X

Additional evidence for the relationship between vitamin D deficiency (< 20 ng/ml) and risk of #dementia and Alzheimer’s disease in older people found in this meta-analysis by Chai et al. https://t.co/mVP4qXcFvR #BMCNeurol https://t.co/wKp7onJIIW

Nov 15, 2019 · 1 share · 21,321 followers View post →
SystematicReviewBot
@EvidenceRobot · X

RT @BMC_series: Additional evidence for the relationship between vitamin D deficiency (< 20 ng/ml) and risk of #dementia and Alzheimer’s di…

Nov 15, 2019 · 1 share · 6,713 followers View post →
SystematicReviewBot
@EvidenceRobot · X

RT @Nuala_Woulfe: Vitamin D deficiency as a risk factor for dementia and Alzheimer’s disease: There are stronger associations between sever…

Sep 26, 2021 · 1 share · 6,713 followers View post →

All mentions

CovidConfusion
@CovidConfusion · X

@thehealthb0t Maybe not having a cholesterol deficiency is protective v AD because cholesterol is needed to make vit D. https://t.co/9BT10iy3my

Sep 22, 2025 · 786 followers View post →
trillionofcells
@trillionofcells · X

@mancmenace1 @IamTybalt79 @thisisnothappen @Strikenstein @RichDSML @stkirsch "There are significant associations between vitamin D deficiency and both dementia and AD. There are stronger associations between severe vitamin D deficiency (< 10 ng/ml) and both dementia and AD compared to moderate vitamin D deficiency (10-20 ng/ml)." https://t.co/jxz1tFbdXS

Nov 2, 2023 · 858 followers View post →
Héctor A. L.
@avellonlianno · X

Algo que se venía ya sospechando: https://t.co/dgGlqAbbKj

Dec 21, 2022 · 698 followers View post →
Álvar Núñez Cabeza de Vaca
@nunez_cabeza · X

@guardian Interesting that vitamin D deficiency is most prominent in black and south Asians and studies have found that vitamin D severe deficiency was associated with a greater risk of dementia (by 48%) and Alzheimer’s disease (by 51%) https://t.co/iz7VRCLToM

Sep 18, 2022 · 107 followers View post →
sapl_
@drpalacioslee · X

@casandradp91 @adrian_dhv @MedscapeES @drjohnm https://t.co/w95o7E798F

Apr 14, 2022 · 89 followers View post →
SystematicReviewBot
@EvidenceRobot · X

RT @Nuala_Woulfe: Vitamin D deficiency as a risk factor for dementia and Alzheimer’s disease: There are stronger associations between sever…

Sep 26, 2021 · 1 share · 6,713 followers View post →
Nuala Woulfe
@Nuala_Woulfe · X

Vitamin D deficiency as a risk factor for dementia and Alzheimer’s disease: There are stronger associations between severe vitamin D deficiency (< 10 ng/ml) and both dementia and AD meta-analysis | BMC Neurology | Full Text #study #vitaminD #health https://t.co/gChkBTSu7V

Sep 26, 2021 · 1 like · 1 share · 1,785 followers View post →
islieb?
@Islieb · X

@focusonline Niedrige Vitamin-D-Werte sind nach etlichen Studien deutlich mit einem höheren Risiko für Alzheimer und Demenz assoziiert. https://t.co/oSr3slVwRK https://t.co/z1nBQ0kHBG https://t.co/Ue71oNnQ4N

Mar 21, 2021 · 9 likes · 37,098 followers View post →
The Pinnacle of Greenville
@PofGreenville · X

Studies are showing that vitamin D deficiency doubles the risk of dementia. https://t.co/c9F0Oe28JW https://t.co/sbydhWemFB

Feb 10, 2021 · 9 followers View post →
Necla Özsel MKA
@Neclazsel3 · X

RT @EkolojiE: Bilişi korumak için D vitamini önemli midir? Demans ve Alzheimer hastalığı için bir risk faktörü olarak D vitamini eksikliğ…

Jan 8, 2021 · 1 share · 4,984 followers View post →
Ekoloji-Ekonomi
@EkolojiE · X

Bilişi korumak için D vitamini önemli midir? Demans ve Alzheimer hastalığı için bir risk faktörü olarak D vitamini eksikliği: güncellenmiş bir meta-analiz: "D vitamini eksikliği ile hem demans hem de AD arasında önemli ilişkiler vardır." https://t.co/Iewb8BLeZy https://t.co/1b0jSvPCfe

Jan 8, 2021 · 4 likes · 1 share · 1,892 followers View post →
Health Time
@healthtimetaylo · X

Vitamin D deficiency as a risk factor for dementia and Alzheimer's disease: an updated meta-analysis. https://t.co/uwBCJnsz2O

Nov 20, 2019 · 40 followers View post →
SystematicReviewBot
@EvidenceRobot · X

RT @BMC_series: Additional evidence for the relationship between vitamin D deficiency (< 20 ng/ml) and risk of #dementia and Alzheimer’s di…

Nov 15, 2019 · 1 share · 6,713 followers View post →
BMC Series
@BMC_series · X

Additional evidence for the relationship between vitamin D deficiency (< 20 ng/ml) and risk of #dementia and Alzheimer’s disease in older people found in this meta-analysis by Chai et al. https://t.co/mVP4qXcFvR #BMCNeurol https://t.co/wKp7onJIIW

Nov 15, 2019 · 1 share · 21,321 followers View post →