Iron for Hair
An essential mineral for producing hemoglobin, which carries oxygen to hair follicles for growth and repair.
Also known as: Ferrous Bisglycinate • Ferrous Sulfate
Overview
Iron is a crucial mineral that plays a central role in oxygen transport throughout the body via hemoglobin in red blood cells. Hair follicles have a high rate of cell turnover and require a steady supply of oxygen and nutrients to function optimally. Iron deficiency, particularly low levels of ferritin (the body's stored iron), is a well-known cause of telogen effluvium, a common type of diffuse hair shedding. Correcting an iron deficiency is one of the most important steps for restoring hair growth in affected individuals.
Key Benefits
Supports Oxygen Supply to Follicles
Adequate iron levels are necessary for hemoglobin to deliver oxygen to hair follicles, which is essential for their metabolic activity and growth.
Reverses Iron-Deficiency Hair Loss
Supplementation can halt and reverse hair shedding (telogen effluvium) caused by low ferritin levels.
Boosts Energy Production
By improving oxygen transport, iron helps combat fatigue and weakness, which often accompany iron deficiency and can impact overall health, including hair.
Dosage & How to Take
Iron supplementation should be guided by blood tests (ferritin, serum iron, CBC). Do not supplement without confirming a deficiency.
| Purpose | Dose | Notes |
|---|---|---|
| Treating Iron-Deficiency Hair Loss | 25-65mg of elemental iron per day | Aim to raise ferritin levels above 50-70 ng/mL for optimal hair growth. Dose depends on the severity of the deficiency. |
| Maintenance/Prevention | 18mg of elemental iron per day | This is a common dose for premenopausal women or those with diets low in iron. |
Best Time to Take
Take on an empty stomach to maximize absorption. Taking with Vitamin C (e.g., a glass of orange juice) significantly enhances absorption.
With or Without Food
If it causes stomach upset, it can be taken with a small amount of food, but avoid taking with calcium, tea, or coffee, which inhibit absorption.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Iron Bisglycinate Chelate | Very High | Minimizing side effects. | A chelated form that is gentle on the stomach and less likely to cause constipation compared to other forms. |
| Ferrous Sulfate | Moderate | Low-cost, effective option. | Highly effective but notorious for causing gastrointestinal side effects like constipation and nausea. |
Side Effects & Safety
Common
- Constipation
- Nausea
- Stomach cramps
- Dark stools (this is normal)
Rare
- Iron toxicity (from overdose), which is a medical emergency.
Contraindications
- Hemochromatosis (iron overload disorder). Do not take iron supplements unless a deficiency has been confirmed by a blood test.
Interactions
These can significantly decrease the absorption of iron. Take iron at least 2 hours apart.
Iron can reduce the absorption of thyroid hormones. Separate doses by at least 4 hours.
Scientific Research
The Role of Iron in Hair Loss
A 2013 review highlights that iron deficiency is a common cause of hair loss, and correcting it is crucial for recovery. It suggests that maintaining a serum ferritin level above 50 ng/mL is important for healthy hair.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.