Becky Ripley and Sophie Ward take a cold hard look at the psychology behind each of the seven deadly sins, in the order established by Pope Gregory the Great: pride, greed, lust, envy, gluttony, wrath, and lazy old sloth. Why have we evolved these ugly emotions? What’s going on in the brain and the body when we feel them? And how best can we live alongside them - in ourselves and with others?

Lust is today's hot topic. It's crucial to the continuation of our species, but it's also a form of neurochemical madness that can lead us astray. We all have wildly different brains, bodies, and cultural references, so everyone’s relationship to lust is highly personal. Is it true that men want it more than women? When was the "lustiest" time in history? And, back in today's world, how can we navigate our drives alongside cultural expectations and the issue of consent? And how can we feel desire without shame?

To guide us through this mess is evolutionary anthropologist Dr Anna Machin from the Department of Experimental Psychology at the University of Oxford, sexologist with a specialty in men’s health and sexual function, Dr Anand Patel, and sex historian Dr Kate Lister, lecturer at Leeds Trinity University and author of 'A Curious History of Sex'.

Producer: Becky Ripley