The research found that men who watched a lot of porn 'have less volume and activity in regions of the brain linked to rewards and motivation' - which effectively means that your dirty habit could be hindering your ambition and making you lazy.

Worryingly, the researchers also found that watching large amounts of porn affected parts of the brain associated with behaviour and decision making.

Try not to get too het up though - Simone Kühn, the study’s lead author, has claimed that the study cannot prove that porn caused the changes to the brain, as those attributes may have already been present with the subject - so there's no conclusive answer to whether porn is 'harmful'.

As reported in Yahoo! News, Kühn said that many other behaviors, such as driving a taxi, are linked to changes to brain size and functioning.

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