Known as a "chubby filter", the artificial intelligence (AI) tool took a photo of a person and edited their appearance to look as though they had put on weight. Many people have shared their "before and after" images on the platform with jokes about how different they looked - however, others said it was a form of "body shaming" and should not be permitted. Experts have also warned the filter could fuel a "toxic diet culture" online and potentially contribute to eating disorders.

TikTok said the filter had been uploaded by a CapCut, which is separate to TikTok but has the same parent company, ByteDance. TikTok also told the BBC that it was reviewing videos uploaded to the app that used the effect, and was making them ineligible for recommendation and blocking them from teen accounts. It added any videos that breached its community guidelines - for example by featuring bullying or harassment - would be removed.

Sadie, who has 66,000 followers on TikTok, had been one of those calling for the "mean" filter to be banned. "It felt like girls being like, 'oh, I've won because I'm skinny and wouldn't it be the worst thing ever to be fat'," the 29-year-old from Bristol said. She said she was contacted by women who said they had deleted TikTok from their phones because the trend made them feel bad about themselves. "I just don't feel like people should be ridiculed for their body just for opening an app," she said in comments made before the tool was pulled.

Dr Emma Beckett, a food and nutrition scientist, told the BBC she felt the trend was "a huge step backwards" in terms weight stigma. "It's just the same old false stereotypes and tropes about people in larger bodies being lazy and flawed, and something to be desperately avoided," she said. She warned that could have a broad social effect. "The fear of weight gain contributes to eating disorders and body dissatisfaction, it fuels toxic diet culture, making people obsess over food and exercise in unhealthy ways and opening them up to scam products and fad diets." (BBC)