Iron toxicity is most closely associated with which condition?

• A. Pernicious anemia
• B. Rickets
• C. Goiter
• D. Hemosiderosis (Hemochromatosis)

Answer: (D)

Iron toxicity happens when the body's iron stores become excessive and deposit in tissues, causing damage from oxidative stress. This is the hallmark of iron overload disorders such as hemosiderosis (often used interchangeably with hemochromatosis), where too much iron accumulates in organs like the liver, heart, and pancreas. In hereditary hemochromatosis, a genetic defect leads to reduced regulation of iron absorption, driving progressive overload. The other conditions involve different nutrients or systems—pernicious anemia is a B12-related issue, rickets involves vitamin D or mineral metabolism, and goiter relates to thyroid/iodine status—so they are not linked to iron toxicity.