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Vitamin D لـ Immune Aging (Immunosenescence)

B

Research suggests vitamin D supplementation in elderly populations may help improve immune markers and vaccine response. Deficiency is highly prevalent in older adults and is associated with impaired immune function and increased infection susceptibility.

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B

الخلاصة

Research suggests vitamin D supplementation in elderly populations may help improve immune markers and vaccine response. Deficiency is highly prevalent in older adults and is associated with impaired immune function and increased infection susceptibility.

Key Study Findings

Review
Fanconi anaemia as a human model of accelerated epigenetic and immune ageing.
Dose: None مقابل: None Outcome: None التأثير: None None

المجتمع المدروس: patients with Fanconi anaemia

Randomized Controlled Trial n=124
Effects of a Novel Dispersible Supplement Containing 2500 IU of Vitamin D and 1000 µg …
Dose: 2500 IU vitamin D + 1000 mcg B12 مقابل: Separate D+B12 and no supplementation control Outcome: Serum 25-OH-D and B12 level restoration التأثير: 37.1% adequate vs 29.4% separate None

المجتمع المدروس: Adults with vitamin D (<20ng/mL) and B12 (<250ng/L) insufficiency

Observational Study n=72
Cardiovascular Risk and Systemic Inflammation in Alopecia Areata: An Observational Case-control Study.
Dose: None مقابل: Healthy controls Outcome: CVR and systemic inflammation in alopecia areata التأثير: None None

المجتمع المدروس: 36 AA patients vs 36 matched controls, mean age 39

Controlled Clinical Trial
Vitamin D stimulates Il-15 synthesis in rodent muscle.
Dose: Single dose (rats); variable (in vitro) مقابل: Untreated controls; VDR-KO mice Outcome: IL-15 gene expression in skeletal muscle التأثير: None None

المجتمع المدروس: C2C12 myotubes, rats, VDR-KO mice

Randomized Controlled Trial 8 weeks
Comparison of Safety and Efficacy of Topical Mometasone 0.1% Ointment, Calcipotriol 0.005% Ointment, and Tacrolimus …
Dose: Topical ointment application (3 arms) مقابل: 3-arm: mometasone vs calcipotriol vs tacrolimus Outcome: SALT score change at 8 weeks التأثير: None <0.001 (momet, calcipot)

المجتمع المدروس: Patients with localized alopecia areata

Other
Modelling the influence of vitamin D and probiotics on inflammation and the intestinal microbiota in …
Dose: None مقابل: No supplementation (modeled) Outcome: Epithelial barrier integrity and immune response التأثير: None None

المجتمع المدروس: Older adults (mathematical model)

Key Statistics

10

الدراسات

5000

المشاركون

Positive

B

التقييم

Referenced Papers

Skin appendage disorders 2025 5 اقتباسات
Biochemistry and biophysics … 2025
Indian dermatology online … 2024 3 اقتباسات
The Cochrane database … 2024 1 اقتباسات
International journal of … 2023 54 اقتباسات
Autoimmunity reviews 2023 24 اقتباسات
Mini reviews in … 2023 9 اقتباسات
Journal of dietary … 2022 6 اقتباسات
Physiological research 2021 2 اقتباسات
Journal of cachexia, … 2020 365 اقتباسات
Advances in chronic … 2019 326 اقتباسات
Actas dermo-sifiliograficas 2019 43 اقتباسات
European journal of … 2017 66 اقتباسات
Postepy dermatologii i … 2017 31 اقتباسات
World journal of … 2016 238 اقتباسات
Ageing research reviews 2016 142 اقتباسات
Postepy dermatologii i … 2016 59 اقتباسات
Indian dermatology online … 2016 51 اقتباسات
World journal of … 2015 62 اقتباسات
The American journal … 2014 125 اقتباسات
Dermato-endocrinology 2013 62 اقتباسات
European journal of … 2012 225 اقتباسات
Inflammatory bowel diseases 2012 224 اقتباسات
Gerontology 2011 27 اقتباسات
Gastroenterology 2010 390 اقتباسات
Journal of the … 2010 11 اقتباسات
Artificial organs 2006 76 اقتباسات
Aging cell 2004 102 اقتباسات

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

الجرعات الشائعة

general:
600-800 IU/day
immunesupport:
1,000-2,000 IU/day
deficiencycorrection:
4,000-5,000 IU/day (under medical supervision)

الحد الأعلى: 4,000 IU/day (100 mcg)

الجرعات المدروسة في الأبحاث

الجرعة المدة التأثير ن
None -- Negative --
2500 IU vitamin D + 1000 mcg B12 -- Positive 124
None -- Negative 72
Single dose (rats); variable (in vitro) -- Positive --
Topical ointment application (3 arms) 8 weeks Positive --
None -- Positive --
None -- Mixed --
None -- Mixed --

أفضل وقت للتناول: With a meal containing fat for better absorption

Safety & Side Effects

الآثار الجانبية المُبلّغ عنها

  • Hypercalcemia at very high doses (nausea, vomiting, weakness)
  • Kidney stones with excessive long-term use
  • Constipation
  • Metallic taste

التفاعلات المعروفة

  • Thiazide diuretics (may increase risk of hypercalcemia)
  • Corticosteroids (reduce vitamin D absorption and metabolism)
  • Orlistat and cholestyramine (reduce fat-soluble vitamin absorption)
  • Statins (vitamin D may affect statin metabolism)

الحد الأقصى المسموح به: 4,000 IU/day (100 mcg)

استشر مقدم الرعاية الصحية دائماً قبل البدء بأي مكمل غذائي.

Frequently Asked Questions

Does Vitamin D help with Immune Aging (Immunosenescence)?
Based on 10 studies with 5,000 participants, there is moderate evidence from clinical studies that Vitamin D may support Immune Aging (Immunosenescence) management. Our evidence grade is B (Good Evidence).
How much Vitamin D should I take for Immune Aging (Immunosenescence)?
Studies have used various dosages. A commonly studied range is 600-800 IU/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Vitamin D?
Reported side effects may include Hypercalcemia at very high doses (nausea, vomiting, weakness), Kidney stones with excessive long-term use, Constipation, Metallic taste. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Vitamin D and Immune Aging (Immunosenescence)?
We rate the evidence as Grade B (Good Evidence). This rating is based on 10 peer-reviewed studies with 5,000 total participants. The overall direction of effect is positive.

Related Evidence

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