Your blood test comes back normal. Your GP says your iron is fine. But you are exhausted in a way sleep doesn't fix, your hair is coming out in handfuls, and your workout breathing is worse than it was a year ago. The problem may not be your haemoglobin — it may be your ferritin. Ferritin is the protein that stores iron, and it can fall critically low months before anaemia appears. In perimenopause, heavier and more frequent periods accelerate the loss. This is the iron probl