Nutrition & Scalp Health
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The Role of Iron in Hair Health
Explore how iron fuels follicle metabolism and why deficiencies can trigger chronic hair shedding.
Source: JAMA DermatologyPublished on: February 26, 2024
Abstract in Plain English
Iron deficiency remains one of the most common nutritional causes of diffuse hair loss. This review examines how iron supports follicular metabolism and what deficiency looks like under the microscope.
Key Findings
- Iron is vital for DNA synthesis in rapidly dividing follicle cells.
- Low ferritin (<30 µg/L) correlates with chronic telogen effluvium.
- Restoring ferritin levels often improves hair density within 3–6 months.
- Dietary absorption depends on vitamin C and gut health.
Why It Matters
Hair shedding can be an early indicator of low iron — long before anemia develops. Addressing nutrition helps clinicians rule out deficiency-related causes of hair loss.
Study Limitations
Correlational data only; researchers emphasize individualized testing before supplementation.
Citation & Review Team
Full Citation
Ramos PM et al., JAMA Dermatology, 2021.Review Team
Author: Student Editor
Fact-Checker: Dermatology Researcher
Disclaimer
This article is for educational purposes only and not a substitute for professional medical advice.