비타민 B12 관련 영양 결핍성 탈모
F총 8,355명의 참여자를 대상으로 한 20건의 연구에 근거합니다. 연구 결과는 혼재되어 있습니다.
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F
결론
Research shows mixed results for vitamin B12 and hair loss — while deficiency may contribute to hair thinning, supplementation is unlikely to help unless you have a confirmed B12 deficiency.
- Mixed results across 20 studies — no consistent benefit from supplementation
- Some studies find lower B12 levels in hair loss patients, others do not
- No large-scale RCTs testing B12 supplementation specifically for hair regrowth
- Supplementation may only help if a genuine B12 deficiency is present
Key Study Findings
retrospective observational
n=113
Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases.
Dose: None
vs: Placebo
효과: None
None
Retrospective cohort
n=2851
Retrospective Review of 2851 Female Patients With Telogen Effluvium: A Single-Center Experience.
Dose: None
vs: Placebo
효과: Ferritin low in 46.5% of patients; iron deficiency in 29.5%
p<0.05
Review
Medical Marijuana and Treatment Personalization: The Role of Genetics and Epigenetics in Response to THC …
Dose: None
vs: None
Outcome: None
효과: None
None
대상 집단: Review of pharmacogenomics of THC and CBD
case-control study
n=180
A comprehensive investigation of biochemical status in patients with telogen effluvium: Analysis of Hb, ferritin, …
Dose: not applicable
vs: Placebo
효과: None
None
Cross-Sectional Study
n=108
Evaluation of the relationship of digital phototrichogram findings of patients with diffuse hair loss with …
Dose: None
vs: Placebo
효과: None
0.05
Case-control
n=973
Micronutrient Deficiencies and Digital Computerized Phototrichogram Analysis in Telogen Effluvium: a Retrospective Correlation Study in …
Dose: None
vs: Placebo
효과: r=0.417 (HGB and AHR in females)
p=0.008
Key Statistics
19
연구
8130
참여자
↔
Mixed
F
등급
Referenced Papers
Retrospective Review of 2851 Female Patients With Telogen Effluvium: A Single-Center Experience.
Other
Journal of cosmetic …
2025
4 인용
Genes
2025
1 인용
Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases.
Other
International journal of …
2025
Journal of cosmetic …
2024
7 인용
Northern clinics of …
2024
1 인용
JAMA
2023
49 인용
Dermatology practical & …
2023
4 인용
Sports medicine - …
2022
34 인용
Frontiers in pharmacology
2022
31 인용
Journal of cosmetic …
2022
22 인용
Turkish journal of …
2022
8 인용
Journal of pain …
2020
56 인용
NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India.
Observational
Journal of cosmetic …
2019
25 인용
American journal of …
2017
104 인용
Journal of drugs …
2016
56 인용
Dermatology research and …
2016
26 인용
Acta dermatovenerologica Croatica …
2016
6 인용
Prostaglandins, leukotrienes, and …
2015
40 인용
Clinical and experimental …
2009
34 인용
Dermatologic clinics
1993
38 인용
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
일반적으로 사용되는 용량
- general:
- 2.4 mcg/day
- deficiency:
- 1,000-2,000 mcg/day
상한량: No established UL
연구에서 사용된 용량
| 용량 | 기간 | 효과 | N |
|---|---|---|---|
| None | -- | Neutral | 113 |
| None | -- | Neutral | 2851 |
| None | -- | Mixed | -- |
| not applicable | -- | Mixed | 180 |
| None | -- | Mixed | 108 |
| None | -- | Positive | 973 |
| None | -- | Neutral | -- |
| 300 mg single dose | -- | Mixed | 9 |
권장 복용 시간: With meals; sublingual form can be taken any time
Safety & Side Effects
보고된 부작용
- ⚠ Generally well tolerated even at high doses
- ⚠ Rare allergic reactions (itching, swelling)
- ⚠ Mild diarrhea or nausea at very high doses
알려진 상호작용
- ● Metformin (reduces B12 absorption by 10-30%)
- ● Proton pump inhibitors and H2 blockers (reduce B12 absorption)
- ● Colchicine (may reduce B12 absorption)
일일 최대 섭취 허용량: No established UL
건강기능식품을 복용하기 전에 반드시 의료 전문가와 상담하십시오.
Frequently Asked Questions
Does 비타민 B12 help with 영양 결핍성 탈모?
Based on 19 studies with 8,130 participants, there is insufficient evidence at this time that 비타민 B12 may support 영양 결핍성 탈모 management. Our evidence grade is F (Evidence Against).
How much 비타민 B12 should I take for 영양 결핍성 탈모?
Studies have used various dosages. A commonly studied range is 2.4 mcg/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of 비타민 B12?
Reported side effects may include Generally well tolerated even at high doses, Rare allergic reactions (itching, swelling), Mild diarrhea or nausea at very high doses. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for 비타민 B12 and 영양 결핍성 탈모?
We rate the evidence as Grade F (Evidence Against). This rating is based on 19 peer-reviewed studies with 8,130 total participants. The overall direction of effect is mixed.
Related Evidence
FDA 면책 조항: 이 내용은 미국 식품의약국(FDA)의 평가를 받지 않았습니다. 이 웹사이트의 제품 및 정보는 질병의 진단, 치료, 완치 또는 예방을 목적으로 하지 않습니다. 제시된 근거 등급은 발표된 동료 심사 연구에 대한 우리의 분석에 기반하며, 의학적 조언을 구성하지 않습니다. 건강기능식품 복용을 시작하기 전에 반드시 의료 전문가와 상담하십시오.