ビタミンD ：休止期脱毛症

Q: Does ビタミンD help with 休止期脱毛症?

Based on 34 studies with 17,842 participants, there is insufficient evidence at this time that ビタミンD may support 休止期脱毛症 management. Our evidence grade is F (Evidence Against).

Q: How much ビタミンD should I take for 休止期脱毛症?

Studies have used various dosages. A commonly studied range is 600-800 IU/day. Always consult your healthcare provider before starting any supplement regimen.

Q: Are there side effects of ビタミン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.

Q: How strong is the evidence for ビタミンD and 休止期脱毛症?

We rate the evidence as Grade F (Evidence Against). This rating is based on 34 peer-reviewed studies with 17,842 total participants. The overall direction of effect is mixed.

合計17,842名の参加者を対象とした32件の研究（メタアナリシス1件、RCT 1件を含む）に基づく。研究間で結果にばらつきが見られる。

𝕏 LinkedIn

<\/script>\n

`; }, get iframeSnippet() { const domain = 'haircited.com'; const params = 'ingredient\u003Dvitamin\u002Dd\u0026condition\u003Dtelogen\u002Deffluvium'; 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.

結論

Despite frequent associations between low vitamin D and telogen effluvium, research does not clearly support vitamin D supplementation as an effective approach for this type of hair shedding.

Lower vitamin D levels are common in telogen effluvium patients but may not be the cause
No well-designed RCTs demonstrate that supplementation resolves telogen effluvium
Post-COVID hair loss studies show inconsistent findings regarding vitamin D
Correcting a deficiency is reasonable, but vitamin D alone is unlikely to resolve hair shedding

Key Study Findings

retrospective observational n=113

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

Dose: None vs: Placebo 効果: None None

narrative review

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.

Dose: None vs: Placebo 効果: None None

Review

Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients.

Dose: None vs: Placebo 効果: None None

Meta-analysis

Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.

Dose: None vs: Placebo 効果: OR=2.84 (AA vs controls), OR=5.24 (FPHL vs controls) p<0.01

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 効果: None None

meta_analysis n=10670

Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.

Dose: not applicable (observational meta-analysis) vs: Placebo 効果: WMD -7.29 ng/mL (95% CI -9.21, -5.38); OR for vitamin D deficiency 3.11 (95% CI 2.29, 4.22) not explicitly stated; CI does

Key Statistics

研究数

17842

参加者数

↔

Mixed

グレード

Referenced Papers

Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients. Review

Nutrients 2025 2 件の引用

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

International journal of … 2025

Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions. Review

Journal of drugs … 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 件の引用

Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis. Meta-Analysis

Journal of cosmetic … 2024 7 件の引用

Post Covid telogen effluvium: the diagnostic value of serum ferritin biomarker and the preventive value of dietary supplements. a case … Other

Archives of dermatological … 2024 5 件の引用

Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis. Systematic Review

Frontiers in nutrition 2024 4 件の引用

Filling the Gaps: Vitamin D Status in Diffuse Hair Fall Among Pakistanis. Other

Dermatology practical & … 2024

Etiology, management, and outcomes of pediatric telogen effluvium: A single-center study in the United States. Other

Pediatric dermatology 2023 9 件の引用

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

Dermatology practical & … 2023 4 件の引用

The development of non-scarring alopecia in women who wear the hijab. Other

Archives of dermatological … 2023 3 件の引用

Oral Vitamin D Treatment in Patients with Telogen Effluvium: Clinical and Dermoscopic Evaluation. Other

International journal of … 2023 1 件の引用

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

Journal of cosmetic … 2022 22 件の引用

The role of micronutrients in the management of COIVD-19 and optimizing vaccine efficacy. Review

Human nutrition & … 2022 9 件の引用

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

Turkish journal of … 2022 8 件の引用

Reply to "Vitamin D status in scarring and nonscarring alopecia". Other

Journal of the … 2022 6 件の引用

Evaluation of MCV/RDW Ratio and Correlations With Ferritin in Telogen Effluvium Patients. Other

Dermatology practical & … 2022 6 件の引用

Supplementation and hair growth: A retrospective chart review of patients with alopecia and laboratory abnormalities. Other

JAAD international 2022 6 件の引用

Telogen Effluvium - a review of the science and current obstacles. Review

Journal of dermatological … 2021 51 件の引用

Role of vitamin D in hair loss: A short review. Review

Journal of cosmetic … 2021 44 件の引用

Characteristics of telogen effluvium in COVID-19 in western Iran (2020). Other

Anais brasileiros de … 2021 26 件の引用

Prevalence of Low Serum Vitamin D Levels in Patients Presenting With Androgenetic Alopecia: A Review. Review

Cureus 2021 20 件の引用

Efficacy of Oral Vitamin D3 Therapy in Patients Suffering from Diffuse Hair Loss (Telogen Effluvium). Other

Journal of nutritional … 2021 12 件の引用

Telogen effluvium caused by COVID-19 in Elmhurst, New York: report of a cohort and review. Review

Dermatology online journal 2021 3 件の引用

Study of serum vitamin D levels in men with premature androgenetic alopecia. Other

International journal of … 2020 18 件の引用

Topical L-thyroxine: The Cinderella among hormones waiting to dance on the floor of dermatological therapy? Review

Experimental dermatology 2020 10 件の引用

NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India. Observational

Journal of cosmetic … 2019 25 件の引用

Vitamin D Receptor Gene Polymorphism In Chronic Telogen Effluvium; A Case-Control Study. Other

Clinical, cosmetic and … 2019 7 件の引用

The Role of Vitamin D in Non-Scarring Alopecia. Review

International journal of … 2017 61 件の引用

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

Journal of drugs … 2016 56 件の引用

Female Pattern Hair Loss: A Retrospective Study in a Tertiary Referral Center. Other

International journal of … 2016 28 件の引用

Use of Vitamins and Minerals in the Treatment of Hair Loss: A Cross-Sectional Survey among Dermatologists in Saudi Arabia. Other

Journal of cutaneous … 2014 10 件の引用

Serum ferritin and vitamin d in female hair loss: do they play a role? Other

Skin pharmacology and … 2013 127 件の引用

'Atrophic telogen effluvium' from cytotoxic drugs and a randomized controlled trial to investigate the possible protective effect of pretreatment with … RCT

The British journal … 2005 40 件の引用

Dosage & Usage

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

一般的な使用量

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

上限量： 4,000 IU/day

研究で検討された用量

用量	期間	効果	N
None	--	Neutral	113
None	--	Positive	--
None	--	Mixed	--
None	--	Negative	--
not applicable	--	Mixed	180
not applicable (observational meta-analysis)	--	Negative	10670
None	--	Mixed	100
None	--	Neutral	120

推奨摂取タイミング： With a fat-containing meal for optimal absorption

Safety & Side Effects

報告されている副作用

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

既知の相互作用

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

耐容上限摂取量： 4,000 IU/day

サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。

Frequently Asked Questions

Does ビタミンD help with 休止期脱毛症?

Based on 34 studies with 17,842 participants, there is insufficient evidence at this time that ビタミンD may support 休止期脱毛症 management. Our evidence grade is F (Evidence Against).

How much ビタミンD should I take for 休止期脱毛症?

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 ビタミン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 ビタミンD and 休止期脱毛症?

We rate the evidence as Grade F (Evidence Against). This rating is based on 34 peer-reviewed studies with 17,842 total participants. The overall direction of effect is mixed.

Related Evidence

に関する他の成分：休止期脱毛症

ミノキシジル A ブラックシードオイル A ビビスカル A 鉄 B オメガ3脂肪酸 B ケラチン B

ビタミンD 他の症状・状態について

円形脱毛症 A 女性型脱毛症 A

総合評価

合計17,842名の参加者を対象とした32件の研究（メタアナリシス1件、RCT 1件を含む）に基づく。研究間で結果にばらつきが見られる。

Evidence Strength10%

Low confidence

研究の内訳

RCT (1)Meta (1)Other (32)

代替成分との比較

この症状に対する他の成分との比較をご覧ください。

に関するすべての成分を見る：休止期脱毛症

詳しく見る

FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。

ビタミンD ： 休止期脱毛症

Embed This Widget

結論

Key Study Findings

Key Statistics

Referenced Papers

Dosage & Usage

一般的な使用量

研究で検討された用量

Safety & Side Effects

報告されている副作用

既知の相互作用

Frequently Asked Questions

Related Evidence

に関する他の成分： 休止期脱毛症

ビタミンD 他の症状・状態について

ビタミンD ：休止期脱毛症

に関する他の成分：休止期脱毛症