Stroke and Vitamin D meta-analyses - many studies

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VitaminDWiki - 10 Meta-analyses of Stroke

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Stroke prognosis 2.95 X more likely if low vitamin D – meta-analysis June 2024

A systematic review and meta-analysis of the linkage between low vitamin D and the risk as well as the prognosis of stroke
Brain and Behavior 14 June 2024 https://doi.org/10.1002/brb3.3577
Jianrong Xiong, Chenliang Zhao, Jinhui Li, Yongxiang Li

Objective
The research intended to probe the connection between the risk of stroke and serum vitamin D levels.

Methods
Three electronic databases (Cochrane Library, EMBASE, PubMed) were searched according to the subject terms from inception until July 29, 2022, and retrieved researches were screened on the basis of inclusion and exclusion criteria. Two investigators conducted the quality assessment and data extraction. Using Stata 16.0 software, a meta-analysis was conducted on the extracted data.

Findings
In total, 27 studies with 45,302 participants were included. Among these studies, 20 focused on stroke risk, while 7 examined stroke prognosis. According to the meta-analysis findings, it was observed that a higher stroke risk is connected to reduced levels of serum vitamin D. This association was reflected in a combined relative risk (RR) of 1 .28 (95% confidence interval (CI): 1.15–1.42) and a worse prognosis after stroke (RR = 2.95, 95% CI: 1.90–4.60). Additional analysis indicated that no apparent relationship between a decrease in vitamin D and the probability of experiencing a hemorrhagic stroke was found. The RR found was 1.93 (95% CI: 0.95–3.95). On the other hand, it was observed that a reduction in serum vitamin D levels was linked to an elevated likelihood of developing an ischemic stroke.
The RR identified was 1.72 (95% CI: 1.78–2.03). Moreover, a lower level of vitamin D in the bloodstream was associated with a more unfavorable prognosis for individuals who suffered from a stroke. The RR for this correlation was 2.95 (95% CI: 1.90–4.60). However, further research is required to confirm the above-mentioned findings.

Conclusion
In conclusion, lower concentration vitamin D was found to be related to an increased risk of stroke, which could mainly be reflected in ischemic stroke patients but not in patients with hemorrhagic stroke. A lower serum vitamin D level was correlative with the poor prognosis of stroke.
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VitaminDWiki – Stroke category contains

131 items in stroke category - see also Overview Stroke and vitamin D,
Overview Hypertension and Vitamin D  Overview Cardiovascular and vitamin D

Stroke more likely if low Vitamin D

• Stroke 74% less likely if high vitamin D (7,295 women 20-50 years old) – July 2017
• Stroke is 13.5 X more likely if low vitamin D and high blood pressure – March 2015
• Ischemic stroke 17 X more likely if low vitamin D – April 2017
• Stroke is strongly associated with Calcification of cerebral arteries (perhaps low Vitamin D, Vitamin K, Mg…) – March 2018
• Ischemic Stroke 3X more likely if Vitamin D Receptor gene change (Fok 1) – Jan 2014

Post-Stroke worse if low Vitamin D

• Poor Acute Ischemic Stroke 4X more likely if low Vitamin D - Nov 2023
• Stroke risks increased if low Vitamin D: Death 3.6 X, recurrence 5.5 X – Meta-analysis Nov 2019
• Stroke outcome at 3 months was 3X worse if bad stroke and low vitamin D – Jan 2020
• Death after Ischemic Stroke 2.5 X more likely if less than 10 ng of Vitamin D – May 2019
• Vascular dementia (after strokes) 32X more likely in Hypertensives with low vitamin D – Oct 2015
• Depression following a stroke is 2.7 X more likely if low vitamin D – Sept 2018
• Stroke incidence not associated with low Vitamin D (but stroke outcome is) – Aug 2019

Post-Stroke better if add Vitamin D

• Post-stroke Vitamin D supplementation helped in 11 ways – May 2023
• Improved recovery from ischemic stroke with Vitamin D (300,000 IU injection) – RCT June 2018
• Better outcome following Ischemic stroke if injected with 600,000 IU of vitamin D – RCT Feb 2017
• Ischaemic stroke – Vitamin D doubled survival (Injection followed by monthly 60,000 IU) – RCT Aug 2016
• Stroke patients need more than 2,000 IU of vitamin D (found this time in Japan) – RCT June 2019

Post-Stroke better if Vitamin D actually gets to cells

• Resveratrol fights Parkinson, Alzheimers, Diabetes, Cardiovascular, ALS, Stroke, etc.– Nov 2018
• Stroke rehabilitation (and prevention) requires Vitamin D actually getting to cells – March 2020

11 studies in both categories of Depression and Stroke

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