비타민B12 관련 영양 결핍성 탈모

Q: Does 비타민B12 help with 영양 결핍성 탈모?

Based on 19 studies with 8,130 participants, there is insufficient evidence at this time that 비타민B12 may support 영양 결핍성 탈모 management. Our evidence grade is F (Evidence Against).

Q: How much 비타민B12 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.

Q: Are there side effects of 비타민B12?

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.

Q: How strong is the evidence for 비타민B12 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.

F 효과 연구에 따르면 이 용도에 효과가 있을 가능성은 낮은 것으로 나타납니다.

총 8,355명의 참여자를 대상으로 한 20건의 연구에 근거합니다. 연구 결과는 혼재되어 있습니다.

𝕏 LinkedIn

<\/script>\n

`; }, get iframeSnippet() { const domain = 'haircited.com'; const params = 'ingredient\u003Dvitamin\u002Db12\u0026condition\u003Dnutritional\u002Ddeficiency\u002Dhair\u002Dloss'; return ``; }, get activeSnippet() { return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet; }, copySnippet() { navigator.clipboard.writeText(this.activeSnippet).then(() => { this.copied = true; setTimeout(() => { this.copied = false; }, 2000); }); } }" @keydown.escape.window="open = false" @click.outside="open = false">

Embed This Widget

Style

Widget powered by . Free, no account required.

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

연구

8130

참여자

↔

Mixed

등급

Referenced Papers

Retrospective Review of 2851 Female Patients With Telogen Effluvium: A Single-Center Experience. Other

Journal of cosmetic … 2025 4 인용

Medical Marijuana and Treatment Personalization: The Role of Genetics and Epigenetics in Response to THC and CBD. Review

Genes 2025 1 인용

Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases. Other

International journal of … 2025

A comprehensive investigation of biochemical status in patients with telogen effluvium: Analysis of Hb, ferritin, vitamin B12, vitamin D, thyroid … Other

Journal of cosmetic … 2024 7 인용

Evaluation of the relationship of digital phototrichogram findings of patients with diffuse hair loss with blood TSH, ferritin and vitamin … Other

Northern clinics of … 2024 1 인용

Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US. Other

JAMA 2023 49 인용

Micronutrient Deficiencies and Digital Computerized Phototrichogram Analysis in Telogen Effluvium: a Retrospective Correlation Study in a Tertiary Medical Center. Other

Dermatology practical & … 2023 4 인용

Effects of Cannabidiol on Exercise Physiology and Bioenergetics: A Randomised Controlled Pilot Trial. Other

Sports medicine - … 2022 34 인용

Differentiating Cannabis Products: Drugs, Food, and Supplements. Review

Frontiers in pharmacology 2022 31 인용

Telogen effluvium in daily practice: Patient characteristics, laboratory parameters, and treatment modalities of 3028 patients with telogen effluvium. Other

Journal of cosmetic … 2022 22 인용

Nonscarring scalp alopecia: Which laboratory analysis should we perform on whom? Other

Turkish journal of … 2022 8 인용

CBD Effects on TRPV1 Signaling Pathways in Cultured DRG Neurons. Other

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

The Role of Micronutrients in Alopecia Areata: A Review. Review

American journal of … 2017 104 인용

Vitamin and Mineral Deficiencies in Patients With Telogen Effluvium: A Retrospective Cross-Sectional Study. Other

Journal of drugs … 2016 56 인용

Clinicoepidemiological Observational Study of Acquired Alopecias in Females Correlating with Anemia and Thyroid Function. Other

Dermatology research and … 2016 26 인용

Trichotillomania: Bizzare Patern of Hair Loss at 11-Year-old Girl. Case Report

Acta dermatovenerologica Croatica … 2016 6 인용

Vitamin B12 and omega-3 fatty acids together regulate lipid metabolism in Wistar rats. Other

Prostaglandins, leukotrienes, and … 2015 40 인용

The role of psychological factors and serum zinc, folate and vitamin B12 levels in the aetiology of trichodynia: a case-control … Other

Clinical and experimental … 2009 34 인용

Management of hair loss in women. Review

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 비타민B12 help with 영양 결핍성 탈모?

Based on 19 studies with 8,130 participants, there is insufficient evidence at this time that 비타민B12 may support 영양 결핍성 탈모 management. Our evidence grade is F (Evidence Against).

How much 비타민B12 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 비타민B12?

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 비타민B12 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.

비타민B12 다른 건강 상태에 대한 근거

휴지기 탈모증 F

한눈에 보기

총 8,355명의 참여자를 대상으로 한 20건의 연구에 근거합니다. 연구 결과는 혼재되어 있습니다.

Evidence Strength10%

Low confidence

연구 분석

RCT (0)Meta (0)Other (19)

대안 비교

이 건강 상태에 대한 다른 성분의 비교 결과를 확인하세요.

모든 성분 보기: 영양 결핍성 탈모

자세히 알아보기

References

[1] Ömer Karakoyun et al.. J Cosmet Dermatol. 2025. Retrospective Review of 2851 Female Patients With Telogen Effluvium: A Single-Center Experience. doi:10.1111/jocd.70037 PubMed
[2] Małgorzata Kalak et al.. Genes (Basel). 2025. Medical Marijuana and Treatment Personalization: The Role of Genetics and Epigenetics in Response to THC and CBD. doi:10.3390/genes16121487 PubMed
[3] Namrata Chhabra et al.. Int J Trichology. 2025. Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases. doi:10.4103/ijt.ijt_38_22 PubMed
[4] Irem Nur Durusu Turkoglu et al.. J Cosmet Dermatol. 2024. A comprehensive investigation of biochemical status in patients with telogen effluvium: Analysis of Hb, ferritin, vitamin B12, vitamin D, thyroid … doi:10.1111/jocd.16512 PubMed
[5] Leyla Bilik et al.. North Clin Istanb. 2024. Evaluation of the relationship of digital phototrichogram findings of patients with diffuse hair loss with blood TSH, ferritin and vitamin … doi:10.14744/nci.2023.33269 PubMed
[6] Pieter A Cohen et al.. JAMA. 2023. Quantity of Melatonin and CBD in Melatonin Gummies Sold in the US. doi:10.1001/jama.2023.2296 PubMed
[7] Hakan Arslan et al.. Dermatol Pract Concept. 2023. Micronutrient Deficiencies and Digital Computerized Phototrichogram Analysis in Telogen Effluvium: a Retrospective Correlation Study in a Tertiary Medical Center. doi:10.5826/dpc.1303a202 PubMed
[8] Ayshe Sahinovic et al.. Sports Med Open. 2022. Effects of Cannabidiol on Exercise Physiology and Bioenergetics: A Randomised Controlled Pilot Trial. doi:10.1186/s40798-022-00417-y PubMed
[9] Arash Salehi et al.. Front Pharmacol. 2022. Differentiating Cannabis Products: Drugs, Food, and Supplements. doi:10.3389/fphar.2022.906038 PubMed
[10] Ahu Yorulmaz et al.. J Cosmet Dermatol. 2022. Telogen effluvium in daily practice: Patient characteristics, laboratory parameters, and treatment modalities of 3028 patients with telogen effluvium. doi:10.1111/jocd.14413 PubMed
[11] Ümran Öner et al.. Turk J Med Sci. 2022. Nonscarring scalp alopecia: Which laboratory analysis should we perform on whom? doi:10.3906/sag-2106-28 PubMed
[12] Uma Anand et al.. J Pain Res. 2020. CBD Effects on TRPV1 Signaling Pathways in Cultured DRG Neurons. doi:10.2147/JPR.S258433 PubMed
[13] Kavita Poonia et al.. J Cosmet Dermatol. 2019. NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India. doi:10.1111/jocd.12559 PubMed
[14] Jordan M Thompson et al.. Am J Clin Dermatol. 2017. The Role of Micronutrients in Alopecia Areata: A Review. doi:10.1007/s40257-017-0285-x PubMed
[15] Evelyn J Cheung et al.. J Drugs Dermatol. 2016. Vitamin and Mineral Deficiencies in Patients With Telogen Effluvium: A Retrospective Cross-Sectional Study. PubMed
[16] Kirti Deo et al.. Dermatol Res Pract. 2016. Clinicoepidemiological Observational Study of Acquired Alopecias in Females Correlating with Anemia and Thyroid Function. doi:10.1155/2016/6279108 PubMed
[17] Jana Zímová et al.. Acta Dermatovenerol Croat. 2016. Trichotillomania: Bizzare Patern of Hair Loss at 11-Year-old Girl. PubMed
[18] Amrita Khaire et al.. Prostaglandins Leukot Essent Fatty Acids. 2015. Vitamin B12 and omega-3 fatty acids together regulate lipid metabolism in Wistar rats. doi:10.1016/j.plefa.2015.04.006 PubMed
[19] C Durusoy et al.. Clin Exp Dermatol. 2009. The role of psychological factors and serum zinc, folate and vitamin B12 levels in the aetiology of trichodynia: a case-control … doi:10.1111/j.1365-2230.2008.03165.x PubMed
[20] D H Rushton. Dermatol Clin. 1993. Management of hair loss in women. PubMed

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.