Fasting activates AgRP/NPY neurones in the arcuate nucleus, which not only induce food intake, but also are suggested to reduce fear‐related behaviour.225, 226, 227 Arcuate AgRP neurones project to the medial amygdala neurones that innervate the posterior bed nucleus of the stria terminalis, and this AgRP‐medial amygdala‐bed nucleus of the stria terminalis pathway has been shown to be involved in fasting‐induced behavioural changes in mice.226 AgRP/NPY neurones also project to the periaqueductal gray, which is involved in fear and anxiety‐related behaviour. Here, NPY is linked to Anxiety.