It’s likely that even the most virtuous amongst us has experienced feelings of anger at some point in our lives. But is this simply a failing in our personal moral fabric or does it have more universal biological origins?

In this episode, we catch up with Guy Leschziner, a professor of neurology and sleep medicine at King’s College Hospital in London to talk about his latest book Seven Deadly Sins: The Biology of Being Human.

He tells us how activity in the emotional regions of our brains affects our behaviour, talks about the influence of testosterone on our aggressive tendencies and tells us how mutations in specific genes can predispose us to commit violent acts.

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