Episode 224: Iron Deficiency or Defense? Understanding Low Iron and Ferritin

From Thyroid Answers Podcast by Dr Eric Balcavage

March 31, 2026 · 47 min · Season 10 · Episode 224

About this episode

Dr. Eric Balcavage discusses the complexities of iron deficiency and ferritin levels in relation to health symptoms and lab testing.

Iron: Deficiency or Defense? Understanding Low Iron and Ferritin Many people are told they are iron deficient simply because their iron or ferritin levels appear low on a blood test. But iron physiology is far more complex than most people realize. In this episode of the Thyroid Answers Podcast , Dr. Eric Balcavage breaks down one of the most misunderstood areas of lab testing: iron status. Fatigue, hair loss, cold intolerance, brain fog, slow metabolism, and even thyroid symptoms are often blamed on iron deficiency. When labs show low iron or low ferritin, the common response is iron supplements or iron infusions. But low iron in the blood does not always mean the body is truly deficient. In many cases, the body is intentionally regulating iron as part of an inflammatory response. Dr. Balcavage explains the difference between true iron deficiency and anemia of inflammation , why ferritin is often misunderstood, and how markers like soluble transferrin receptor can help clarify whether the body truly needs iron or is simply regulating it differently. Understanding these patterns can help prevent unnecessary iron supplementation and help identify the real reason symptoms may be…

People in this episode

Host: Dr. Eric Balcavage

Topics covered

iron deficiency
ferritin
anemia of inflammation
iron physiology
lab testing
thyroid symptoms

Keywords

iron deficiency
ferritin
anemia of inflammation
fatigue
hair loss
brain fog
thyroid symptoms
iron supplements
soluble transferrin receptor

Mentioned in this episode

Organizations: Thyroid Answers Podcast