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Functional Iron Deficiency: When ‘Normal’ Isn’t Optimal

Functional Iron Deficiency: When ‘Normal’ Isn’t Optimal

Mar 10, 2026 | Hair & Scalp Science.

“Your iron levels are normal.” You have heard it from your GP. You have seen it on your blood results. But you are exhausted by 3pm. Your hair is thinning. You cannot concentrate the way you used to. And despite sleeping well, you never feel truly rested....

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