At my school, teenager in the 90s, there was an eating disorder ‘trend’. Two girls had ‘proper’ anorexia, stopped eating, ate an apple a day, got very thin, one was hospitalised and had to repeat the year. About 20 other girls started mimicking, some were my friends, they started to half-arse food control, skip lunch very vocally, and there was a weird trend for laxatives. They did not get very thin but we’re very vocal/publicly cried about it, took laxatives or vomited openly at school etc. It came to a head on a school trip when an outside adult noticed this trend and called it out. The girls were all hauled in, told to stop attention seeking and funnily enough it stopped. There was an assembly on copying eating disorders and attention seeking behaviour - they basically said those who copy are minimising real illness. Wouldn’t be done like that now but it was called out for what it was, which stopped it spreading and made it less attractive as the teachers were basically calling the copycats attention seekers which nobody wanted to emulate after that.
I see trends in my teen’s life too. In year 7 there were literally tens of kids saying they were trans, a new one each day or week for much of the year. I don’t know any who still identified as trans in year 8. Many said they were gay, some still are but many are now openly straight. Lots are currently self harming - cutting arms and openly showing the wounds - and that too appears to be a trend. Poor bloody kids. Being a teen is hard and finding your real self even harder in the age of social media. As my 1990s anorexia trend shows, this isn’t a new thing - the desire to be different and for attention - but it is fuelled and spread wider by social media and the attention seeking nature of that pernicious form of communication that most teens subscribe to.
I feel sorry for those who genuinely have eating disorders, have gender dysmorphia, are self harming because they are desperate, because the trends that copy them serve to minimise the genuine conditions.