Researchers from a study centre in Germany have found that men's brains may shrink if they watch too much pornographic material.
A new study by researchers at the Max Planck Institute for Human Development in Germany has found that men who watch a lot of sexually explicit videos generally have a smaller striatum - the part of the brain which processes rewards and motivation.
Watching pornographic material can also lead to a decrease in grey matter, making the brains of these men generally smaller than those who choose not to watch it.
Dr Kühn told Reuters, "We found that another brain region,that is also part of the striatum that is active when people see sexual stimuli, shows less activation the more pornography participants consumed."