Long COVID might be triggered by low iron levels in the blood from the person's initial infection, a new study claims.

New research suggests that low iron levels could lead to brain fog during perimenopause. Here's what to know about the new findings and what it means for you.

Iron, which is part of the important molecule (hemoglobin) found in red blood cells, which carry oxygen around the body. Zinc, which is needed for making protein and genetic material.

If we take the blood bank at their word and your iron level is too high, that raises the possibility of hereditary hemochromatosis.