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the claim

Iron deficiency causes hair loss.

the verdict
INSUFFICIENT LEANING
Recorded sources
6 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that iron deficiency causes hair loss?

Unclear. Several clinical reports and one hospital-based study associate iron deficiency anemia with certain types of hair loss, including telogen effluvium, and a mouse study shows iron restriction can trigger alopecia. None of the placed sources establishes that iron deficiency causes hair loss generally in humans; the support is partial and limited to specific populations and hair-loss subtypes.

Verdict: PARTIAL LEAN · 6 sources for, 0 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence for · 6
Telogen hair loss
2026
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Ledentsova, S., Seliverstov, P., & Ledentsov, A. (2026). Telogen hair loss. doi.org. https://doi.org/10.29296/25877305-2026-05-03

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More for · 5
A case series of trichoscopy patterns in hair loss patients with iron deficiency anemia
2026
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Nayak, S. & Pathave, H. S. (2026). A case series of trichoscopy patterns in hair loss patients with iron deficiency anemia. doi.org. https://doi.org/10.25259/jhrrm_5_2026

A Hospital-based Study to Determine Causes of Diffuse Hair Loss in Women.
2015
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Malkud, S. (2015). A Hospital-based Study to Determine Causes of Diffuse Hair Loss in Women.. doi.org. https://doi.org/10.7860/JCDR/2015/14089.6170

The Classic Dermatological Signs of Iron Deficiency: A Case-Series
2026
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Balkrishna, B. (2026). The Classic Dermatological Signs of Iron Deficiency: 
A Case-Series. doi.org. https://doi.org/10.11648/j.ijcd.20260901.15

Alopecia in IL‐10‐deficient mouse pups is c‐kit‐dependent and can be triggered by iron deficiency
Get citation
Alopecia in IL‐10‐deficient mouse pups is c‐kit‐dependent and can be triggered by iron deficiency. (n.d.). cir.nii.ac.jp. https://doi.org/10.1111/j.1600-0625.2009.01032.x

The assessment of knowledge and awareness about iron deficiency anemia among the population of Riyadh province
2023
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Alsaab, S., Alhussayn, O. S., Altokhais, Z. A., Alotaibi, A. I., Alsahli, F. A., & Alotaibi, B. A. (2023). The assessment of knowledge and awareness about iron deficiency anemia among the population of Riyadh province. doi.org. https://doi.org/10.4103/jfmpc.jfmpc_209_23

also asked as
  • Does iron deficiency cause hair loss?
  • Is it true that low iron leads to hair thinning?
  • Can a lack of iron result in losing hair?
  • Does having an iron deficiency make your hair fall out?
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