维生素 D 用于休止期脱发

Q: Does 维生素 D help with 休止期脱发?

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

Q: How much 维生素 D should I take for 休止期脱发?

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 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.

Q: How strong is the evidence for 维生素 D and 休止期脱发?

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.

基于32项研究（1项荟萃分析、1项RCT），共17,842名参与者。各研究结果不一。

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结论

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 效果: None None

narrative review

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

Dose: None vs: Placebo 效果: None None

Review

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

Dose: None vs: Placebo 效果: None None

Meta-analysis

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

Dose: None vs: Placebo 效果: 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 效果: 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 效果: 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

研究数量

17842

受试者

↔

Mixed

等级

Referenced Papers

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

Nutrients 2025 2 次引用

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 次引用

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

Journal of cosmetic … 2024 7 次引用

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 次引用

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

Frontiers in nutrition 2024 4 次引用

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 次引用

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

Dermatology practical & … 2023 4 次引用

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

Archives of dermatological … 2023 3 次引用

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

International journal of … 2023 1 次引用

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

Journal of cosmetic … 2022 22 次引用

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

Human nutrition & … 2022 9 次引用

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

Turkish journal of … 2022 8 次引用

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

Journal of the … 2022 6 次引用

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

Dermatology practical & … 2022 6 次引用

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

JAAD international 2022 6 次引用

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

Journal of dermatological … 2021 51 次引用

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

Journal of cosmetic … 2021 44 次引用

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

Anais brasileiros de … 2021 26 次引用

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

Cureus 2021 20 次引用

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

Journal of nutritional … 2021 12 次引用

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

Dermatology online journal 2021 3 次引用

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

International journal of … 2020 18 次引用

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

Experimental dermatology 2020 10 次引用

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

Journal of cosmetic … 2019 25 次引用

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

Clinical, cosmetic and … 2019 7 次引用

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

International journal of … 2017 61 次引用

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

Journal of drugs … 2016 56 次引用

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

International journal of … 2016 28 次引用

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 次引用

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

Skin pharmacology and … 2013 127 次引用

'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 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
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

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 休止期脱发?

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

How much 维生素 D should I take for 休止期脱发?

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 休止期脱发?

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

其他成分用于休止期脱发

米诺地尔（Minoxidil） A 黑种草油 A Viviscal A 铁 B Omega-3 脂肪酸 B 角蛋白（Keratin） B

维生素 D 用于其他健康状况

斑秃 A 女性型脱发 A

快速结论

基于32项研究（1项荟萃分析、1项RCT），共17,842名参与者。各研究结果不一。

Evidence Strength10%

Low confidence

研究分析

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

对比替代方案

查看其他成分针对该健康状况的对比结果。

查看所有成分用于休止期脱发

了解更多

FDA 免责声明: 这些声明未经美国食品药品监督管理局（FDA）评估。本网站上的产品和信息无意用于诊断、治疗、治愈或预防任何疾病。所展示的证据等级基于我们对已发表的同行评审研究的分析，不构成医疗建议。在开始任何补充剂方案之前，请务必咨询您的医疗保健提供者。

维生素 D 用于 休止期脱发

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结论

Key Study Findings

Key Statistics

Referenced Papers

Dosage & Usage

常用剂量

研究中使用的剂量

Safety & Side Effects

已报告的副作用

已知相互作用

Frequently Asked Questions

Related Evidence

其他成分用于 休止期脱发

维生素 D 用于其他健康状况

维生素 D 用于休止期脱发

其他成分用于休止期脱发