Épisode 162 : Le fer, le minéral le plus mal compris

3 Aug 2026 · 21 min
21:19

In this solo French‑language episode of her biohacking/ longevity podcast for women, naturopath Alie Bragz explains why iron is the most misunderstood mineral in female health. She begins by announcing upcoming format changes (new guests, studio recordings) and reiterates the podcast’s mission to help women age healthily, lose fat and maintain a youthful appearance using natural techniques. Alie then shares her personal experience of repeatedly ordering blood work without ever receiving a complete iron panel, discovering that despite normal hemoglobin she had abnormal iron markers. She illustrates the problem with a client case study (pseudonym Sophie), a woman in her 40s who suffered fatigue, hair loss, brain fog and poor exercise recovery despite normal hemoglobin; the underlying issue was a functional iron deficiency caused by elevated hepcidin and chronic low‑grade inflammation. Alie provides a concise physiology overview: iron’s roles in oxygen transport, mitochondrial energy production, neurotransmitter synthesis, immune function, thyroid hormone conversion (T4→T3) and muscle performance. She explains the regulatory system—hepcidin (produced by the liver) closes the ferroportin “gate” when iron stores are sufficient or inflammation is present, preventing absorption even if dietary iron is high. The episode then details the key laboratory biomarkers—ferritin (storage and acute‑phase protein), serum iron, transferrin (the “bus” that carries iron), transferrin saturation, and inflammatory markers (CRP, ESR)—and how to interpret them together rather than in isolation. Alie contrasts functional medicine’s focus on optimal ranges with conventional medicine’s reliance on pathological cut‑offs, highlighting common clinical errors: supplementing iron without a full panel, assuming normal/elevated ferritin rules out deficiency, and long‑term supplementation without re‑testing. She concludes with practical advice: request a complete iron panel (including ferritin, serum iron, transferrin, saturation, CRP/ESR), discuss results with a qualified practitioner, address underlying inflammation, and consider personalized supplementation. Listeners are invited to contact her clinic (Ting Fit) for further guidance.

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