United Kingdom, March 4 -- YouTube is making changes to discourage people from getting stuck in negative "wormholes" by repeatedly watching harmful videos.

The video-sharing platform looked into insights from young people's development last year and shared that some kinds of videos aren't harmful or offensive when seen once, but become more damaging when viewed repeatedly.

Now, the Google-owned platform has developed ways of finding categories of videos that could be deemed problematic and is testing ways to spread out views of the videos.

Initially, the changes were made to two specific types of videos: social aggression and those that compare idealised physical features or body types.

But now, the changes are being rolled out to thr...