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الزنك لـ Alopecia Areata (الثعلبة البقعية)

F

بناءً على 46 دراسة (3 meta-analyses, 1 RCT) بمشاركة 23,495 مشاركًا إجمالاً. النتائج متباينة بين الدراسات.

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F

الخلاصة

While people with alopecia areata often have lower zinc levels, research is mixed on whether zinc supplementation helps — it may support overall immune health but is not a reliable solution for alopecia areata.

  • Lower zinc levels are consistently found in alopecia areata patients
  • Supplementation studies show inconsistent results for hair regrowth
  • Zinc plays a role in immune function, which is relevant to autoimmune hair loss
  • No large-scale RCT specifically tests zinc supplementation for alopecia areata

Key Study Findings

Review
Eyebrow Madarosis: An Updated Review of the Etiology and Management, Part I - Nonscarring Disorders.
Dose: None مقابل: None Outcome: None التأثير: None None

المجتمع المدروس: review of nonscarring eyebrow alopecia etiologies and management (1960-2025)

Review
The role of trace elements for the function and health of the skin.
Dose: None مقابل: Placebo التأثير: None None
Meta-Analysis n=4931
Association Between Serum Trace Elements Level and Alopecia Areata: A Systematic Review and Meta-Analysis.
Dose: None مقابل: Placebo التأثير: SMD=-0.93 (vitamin D); SMD=-0.69 (zinc); OR=2.48 (vitamin D deficiency risk) p<0.05
Animal Study n=36
Associations between ionomic profile and metabolic abnormalities in a murine model of sodium sulfide induced …
Dose: Tofacitinib 1 mg/kg مقابل: Placebo التأثير: Differential metabolites and ions identified via OPLS-DA; Mg2+ correlated with CD8+ T cell modulatio None
Systematic Review and Meta-Analysis n=7014
Trace Elements and Risk of Immune-Mediated Skin Disease: A Systematic Review and Meta-analysis.
Dose: None مقابل: Placebo التأثير: Standardized mean differences reported for each element and disease combination (specific values not None

Key Statistics

60

الدراسات

23876

المشاركون

Mixed

F

التقييم

Referenced Papers

Journal of trace … 2025 4 اقتباسات
Cureus 2024 1 اقتباسات
Acta dermato-venereologica 2023 11 اقتباسات
Skin appendage disorders 2020 10 اقتباسات
The Australasian journal … 2019 51 اقتباسات
Indian journal of … 2019 10 اقتباسات
American journal of … 2017 104 اقتباسات
Archives of biochemistry … 2016 124 اقتباسات
Clinics in dermatology 2016 19 اقتباسات
Acta dermatovenerologica Croatica … 2016 6 اقتباسات
Journal of the … 2016 4 اقتباسات
Annals of dermatology 2013 114 اقتباسات
Indian journal of … 2009 79 اقتباسات
Clinical and experimental … 2003 6 اقتباسات
Deutsche medizinische Wochenschrift … 1997 7 اقتباسات
Clinical and experimental … 1989 140 اقتباسات
Zeitschrift fur Hautkrankheiten 1987 3 اقتباسات
Acta dermato-venereologica 1986 53 اقتباسات
Giornale italiano di … 1986
Dermatologische Monatschrift 1984 3 اقتباسات
Zeitschrift fur Hautkrankheiten 1982 2 اقتباسات
The British journal … 1981 58 اقتباسات
Zeitschrift fur Hautkrankheiten 1980
Przeglad dermatologiczny 1978 4 اقتباسات

Dosage & Usage

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

الجرعات الشائعة

general:
8-11 mg/day
hairloss:
15-30 mg/day

الحد الأعلى: 40 mg/day

الجرعات المدروسة في الأبحاث

الجرعة المدة التأثير ن
None -- Neutral --
None -- Mixed --
None -- Negative 4931
None -- Positive --
Tofacitinib 1 mg/kg -- Positive 36
None -- Mixed 7014
None -- Neutral 30
Corticosteroid injections (dose not specified) in transgenic mice -- Positive --

أفضل وقت للتناول: With meals to minimize stomach upset; separate from iron and calcium by 2 hours

Safety & Side Effects

الآثار الجانبية المُبلّغ عنها

  • Nausea and vomiting (especially on an empty stomach)
  • Metallic taste in the mouth
  • Copper depletion with chronic high-dose use
  • Headache and diarrhea

التفاعلات المعروفة

  • Copper supplements (zinc inhibits copper absorption at doses >40 mg/day)
  • Tetracycline and quinolone antibiotics (mutual absorption reduction)
  • Penicillamine (zinc reduces absorption of this rheumatoid arthritis drug)

الحد الأقصى المسموح به: 40 mg/day

استشر مقدم الرعاية الصحية دائماً قبل البدء بأي مكمل غذائي.

Frequently Asked Questions

Does الزنك help with Alopecia Areata (الثعلبة البقعية)?
Based on 60 studies with 23,876 participants, there is insufficient evidence at this time that الزنك may support Alopecia Areata (الثعلبة البقعية) management. Our evidence grade is F (Evidence Against).
How much الزنك should I take for Alopecia Areata (الثعلبة البقعية)?
Studies have used various dosages. A commonly studied range is 8-11 mg/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of الزنك?
Reported side effects may include Nausea and vomiting (especially on an empty stomach), Metallic taste in the mouth, Copper depletion with chronic high-dose use, Headache and diarrhea. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for الزنك and Alopecia Areata (الثعلبة البقعية)?
We rate the evidence as Grade F (Evidence Against). This rating is based on 60 peer-reviewed studies with 23,876 total participants. The overall direction of effect is mixed.

Related Evidence

إخلاء مسؤولية FDA: لم تُقيَّم هذه البيانات من قبل إدارة الغذاء والدواء (FDA). لا تهدف المنتجات والمعلومات الواردة في هذا الموقع إلى تشخيص أو علاج أو شفاء أو الوقاية من أي مرض. تستند تقييمات الأدلة المعروضة إلى تحليلنا للأبحاث المحكّمة المنشورة ولا تُشكّل نصيحة طبية. استشر مقدم الرعاية الصحية دائماً قبل البدء بأي نظام مكملات.