'Trigger warnings' on sensitive content have been thrust into the spotlight after Hollywood actor Matt Smith criticised their use. 

The House of the Dragon star claimed giving viewers 'trigger warnings' has left TV shows 'dumbed-down'.

Clinical psychologist Dougal Sutherland says these warnings aren't particularly useful - and can create problems in their own right.

"What they do do is they increase people's anxiety in advance of something coming up, and that people don't end up avoiding looking up at or watching the thing you're supposed to be not looking at."

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