Vitamina D per Telogen effluvium
F Effetto La ricerca indica che è improbabile che sia efficace per questo utilizzo.Basato su 32 studi (1 meta-analysis, 1 RCT) con 17,842 partecipanti totali. I risultati sono contrastanti tra gli studi.
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F
In sintesi
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
Effetto: None
None
narrative review
Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions.
Dose: None
vs: Placebo
Effetto: None
None
Review
Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients.
Dose: None
vs: Placebo
Effetto: None
None
Meta-analysis
Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.
Dose: None
vs: Placebo
Effetto: 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
Effetto: 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
Effetto: 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
34
Studi
17842
Partecipanti
↔
Mixed
F
Grado
Referenced Papers
Nutrients
2025
2 citazioni
Telogen Effluvium Following Coronavirus Disease-2019 Infection: A Retrospective Study of 113 Cases.
Other
International journal of …
2025
Journal of drugs …
2025
Journal of cosmetic …
2024
7 citazioni
Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis.
Meta-Analysis
Journal of cosmetic …
2024
7 citazioni
Archives of dermatological …
2024
5 citazioni
Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis.
Systematic Review
Frontiers in nutrition
2024
4 citazioni
Dermatology practical & …
2024
Pediatric dermatology
2023
9 citazioni
Dermatology practical & …
2023
4 citazioni
Archives of dermatological …
2023
3 citazioni
Oral Vitamin D Treatment in Patients with Telogen Effluvium: Clinical and Dermoscopic Evaluation.
Other
International journal of …
2023
1 citazioni
Journal of cosmetic …
2022
22 citazioni
Human nutrition & …
2022
9 citazioni
Turkish journal of …
2022
8 citazioni
Journal of the …
2022
6 citazioni
Dermatology practical & …
2022
6 citazioni
JAAD international
2022
6 citazioni
Journal of dermatological …
2021
51 citazioni
Journal of cosmetic …
2021
44 citazioni
Anais brasileiros de …
2021
26 citazioni
Cureus
2021
20 citazioni
Journal of nutritional …
2021
12 citazioni
Dermatology online journal
2021
3 citazioni
International journal of …
2020
18 citazioni
Experimental dermatology
2020
10 citazioni
NonScarring Diffuse Hair Loss in Women: a Clinico-Etiological Study from tertiary care center in North-West India.
Observational
Journal of cosmetic …
2019
25 citazioni
Clinical, cosmetic and …
2019
7 citazioni
International journal of …
2017
61 citazioni
Journal of drugs …
2016
56 citazioni
International journal of …
2016
28 citazioni
Journal of cutaneous …
2014
10 citazioni
Skin pharmacology and …
2013
127 citazioni
The British journal …
2005
40 citazioni
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Dosaggi di uso comune
- general:
- 600-800 IU/day
- deficiency:
- 1,000-5,000 IU/day
Limite massimo: 4,000 IU/day
Dosaggi studiati nella ricerca
| Dosaggio | Durata | Effetto | 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 |
Momento migliore per l'assunzione: With a fat-containing meal for optimal absorption
Safety & Side Effects
Effetti collaterali segnalati
- ⚠ Hypercalcemia at very high doses (nausea, vomiting, weakness)
- ⚠ Kidney stones with excessive long-term use
- ⚠ Constipation
- ⚠ Metallic taste
Interazioni note
- ● Thiazide diuretics (may increase risk of hypercalcemia)
- ● Corticosteroids (reduce vitamin D absorption and metabolism)
- ● Orlistat and cholestyramine (reduce fat-soluble vitamin absorption)
Livello di assunzione massimo tollerabile: 4,000 IU/day
Consultare sempre il proprio medico prima di iniziare qualsiasi integratore.Consultate sempre il vostro medico prima di iniziare qualsiasi integratore.
Frequently Asked Questions
Does Vitamina D help with Telogen effluvium?
Based on 34 studies with 17,842 participants, there is insufficient evidence at this time that Vitamina D may support Telogen effluvium management. Our evidence grade is F (Evidence Against).
How much Vitamina D should I take for Telogen effluvium?
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 Vitamina 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 Vitamina D and Telogen effluvium?
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
Altri ingredienti per Telogen effluvium
Vitamina D per altre condizioni
References
- [1] Andrea Sechi et al.. Nutrients. 2025. Safety First: A Comprehensive Review of Nutritional Supplements for Hair Loss in Breast Cancer Patients. doi:10.3390/nu17091451 PubMed
- [2] 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
- [3] Adam Leavitt et al.. J Drugs Dermatol. 2025. Addressing the Root Causes of Female Hair Loss and Non-Pharmaceutical Interventions. doi:10.36849/JDD.8763 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] Yuling Chen et al.. J Cosmet Dermatol. 2024. Serum 25 hydroxyvitamin D in non-scarring alopecia: A systematic review and meta-analysis. doi:10.1111/jocd.16093 PubMed
- [6] Nermeen Ibrahim Bedair et al.. Arch Dermatol Res. 2024. Post Covid telogen effluvium: the diagnostic value of serum ferritin biomarker and the preventive value of dietary supplements. a case … doi:10.1007/s00403-024-03004-1 PubMed
- [7] Tanat Yongpisarn et al.. Front Nutr. 2024. Vitamin D deficiency in non-scarring and scarring alopecias: a systematic review and meta-analysis. doi:10.3389/fnut.2024.1479337 PubMed
- [8] Palwasha Jalil et al.. Dermatol Pract Concept. 2024. Filling the Gaps: Vitamin D Status in Diffuse Hair Fall Among Pakistanis. doi:10.5826/dpc.1404a232 PubMed
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- [33] H Rasheed et al.. Skin Pharmacol Physiol. 2013. Serum ferritin and vitamin d in female hair loss: do they play a role? doi:10.1159/000346698 PubMed
- [34] T O Bleiker et al.. Br J Dermatol. 2005. 'Atrophic telogen effluvium' from cytotoxic drugs and a randomized controlled trial to investigate the possible protective effect of pretreatment with … doi:10.1111/j.1365-2133.2005.06608.x PubMed
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