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Iron deficiency symptoms can develop gradually and include:
- Unusual fatigue and weakness
- Pale skin and brittle nails
- Shortness of breath
- Headaches and dizziness
- Cold hands and feet
According to research published in NCBI, iron deficiency affects over 2 billion people worldwide. If you experience these symptoms, it’s important to get your iron levels tested before starting supplementation, as excessive iron can be harmful.
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Last Updated: October 15, 2025
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