Christianity says lust is a sin but the Greek and Roman empires celebrated it. The history of the sin of lust reveals surprising twists--including Gnostic Christian orgies, Puritan anti-fornication laws, and exorcists who battled the demon of lust called Asmodeus. Today scientists believe the sin of lust maybe more genetics than choice... but can they prove it?

The sin of gluttony isn't mentioned in the Bible, but as early as the 4th century those of Christian faith believed that eating to much could send you to Hell. During the Dark Ages theologians believed there were seven ways to commit the sin of gluttony, from "eating too much" to "eating too daintily." Italian writer Dante said those who committed the sin of gluttony would be punished in hell by being force-fed toads and vermin. This sin is thought to be the cause of obesity and alcoholism--and crusaders fought against the sin with everything from religious fasts to Prohibition.

The sin of anger is the sin that kills. The prophet Moses was prone to fits of rage. The mythic warriors of Sparta meditated in order to banish the sin of anger before a battle. Italian writer Dante placed those that committed the sin of anger in the "Fourth Circle of Hell," tearing each other limb from limb for eternity. Those who study demonology claim the sin of anger is really the possession of the body by the demon Ammon. Today, neuroscientists believe they've found the emotion of anger in the "amygdala." So, is the sin of anger demonic or chemical?