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维生素 D 用于 斑秃

A

基于62项研究(8项荟萃分析、1项RCT),共9,085,485名参与者。多数研究显示无效果或负面效果。

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A

结论

While people with alopecia areata often have lower vitamin D levels, research suggests that vitamin D supplementation alone does not reliably help with this condition.

  • 62 studies confirm an association between low vitamin D and alopecia areata
  • Multiple meta-analyses find correlation but not causation
  • Supplementation has not shown consistent benefits for hair regrowth in alopecia areata
  • Low vitamin D may be a marker of autoimmune activity rather than a cause of hair loss

Key Study Findings

Meta-analysis
Vitamin D and its Analogs in Treatment of Mild to Moderate Alopecia Areata: Systematic Review …
Dose: Topical or intralesional vitamin D3 and analogs (various doses and formulations) vs: Placebo 效果: OR=3.20 (95% CI: 1.24-8.24) for intralesional vitamin D3; MD=2.11 (topical); MD=-4.73 vs intralesion None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None vs: Placebo 效果: None None
Meta-Analysis n=4931
Association Between Serum Trace Elements Level and Alopecia Areata: A Systematic Review and Meta-Analysis.
Dose: None vs: Placebo 效果: SMD=-0.93 (vitamin D); SMD=-0.69 (zinc); OR=2.48 (vitamin D deficiency risk) p<0.05
Case-Control n=144 Open-label
Tru9I Variant as a Novel Genetic Marker for Vitamin D Deficiency in Alopecia Areata.
Dose: None vs: 72 AA patients vs 72 age/sex-matched healthy controls Outcome: Vitamin D levels and VDR gene expression by … 效果: None None

研究人群: Alopecia areata patients vs healthy controls

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

研究人群: 36 AA patients vs 36 matched controls, mean age 39

Key Statistics

98

研究数量

9086791

受试者

Mixed

A

等级

Referenced Papers

Skin research and … 2023 28 次引用
Autoimmunity reviews 2023 24 次引用
Photodiagnosis and photodynamic … 2023 5 次引用
Archives of dermatological … 2023 3 次引用
The American Journal … 2022 2 次引用
Journal of dermatological … 2021 51 次引用
Journal of cosmetic … 2021 44 次引用
Journal of the … 2020 57 次引用
International journal of … 2020 18 次引用
Journal of the … 2019 189 次引用
Actas dermo-sifiliograficas 2019 43 次引用
Journal of Nepal … 2019 8 次引用
American journal of … 2018 138 次引用
Clinical and experimental … 2018 50 次引用
American journal of … 2017 104 次引用
International journal of … 2017 61 次引用
Indian journal of … 2017 46 次引用
Postepy dermatologii i … 2017 31 次引用
Journal of the … 2017 7 次引用
Postepy dermatologii i … 2016 59 次引用
Indian dermatology online … 2016 51 次引用
Clinics in dermatology 2016 19 次引用
The journal of … 2015 25 次引用
The Israel Medical … 2014 79 次引用
The British journal … 2014 74 次引用
Expert opinion on … 2014 57 次引用
Journal of cutaneous … 2014 35 次引用
The Journal of … 2013 10 次引用

Dosage & Usage

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

常用剂量

general:
600-800 IU/day
deficiency:
1,000-5,000 IU/day

上限: 4,000 IU/day

研究中使用的剂量

剂量 持续时间 效果 N
Topical or intralesional vitamin D3 and analogs (various doses and formulations) -- Positive --
None -- Positive --
None -- Negative 4931
None -- Positive --
None -- Positive 144
None -- Negative 72
Topical ointment application (3 arms) 8 weeks Positive --
oral betamethasone 2 mg (children) or 4 mg (adults) two consecutive days per week for at least 3 mon 12 weeks Positive 40

最佳服用时间: With a fat-containing meal for optimal absorption

Safety & Side Effects

已报告的副作用

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

已知相互作用

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

可耐受最高摄入量: 4,000 IU/day

在开始服用任何补充剂之前,请务必咨询您的医疗保健提供者。

Frequently Asked Questions

Does 维生素 D help with 斑秃?
Based on 98 studies with 9,086,791 participants, there is strong evidence from multiple clinical trials that 维生素 D may support 斑秃 management. Our evidence grade is A (Strong Evidence).
How much 维生素 D should I take for 斑秃?
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 维生素 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 维生素 D and 斑秃?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 98 peer-reviewed studies with 9,086,791 total participants. The overall direction of effect is mixed.

Related Evidence

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