The Immune MindDelving into the recent discovery of the brain's immune system, Dr Monty Lyman reveals the extraordinary implications for our physical and mental health. Until a decade ago, we misunderstood a fundamental aspect of human health. Although the brain and the body have always been viewed as separate entitiestreated in separate hospitalsscience now shows that they are intimately linked. Startlingly, we now know that our immune system is in constant