Oft it is not the person’s behaviour, per se, that causes our anger or irritation, but our view of their behaviour, our thoughts and perceptions around it. Given that our own thoughts and beliefs play such a fundamental role in how we interpret and respond to the behaviour in question, the line between where the anger or irritation comes from starts to blur. Is it really “external” at all?
'Game-Changing Discovery Links the Brain and the Immune System' by Alissa Greenberg "Researchers at the University of Virginia School of Medicine have made a dazzling discovery, published this week in Nature: the brain is directly connected to the immune system by previously unknown vessels." Time.com 6-3-15