London ? Beware those impossibly tiny waists and never-ending legs: looking at too much airbrushed beauty in glossy magazines can be hazardous to your health.

That, at least, is what campaigners working against eating disorders insist. For years, they have complained that the waif-like, size zero models favored by fashion houses promote an unhealthy dieting culture. But digitally trimmed celebrities and models, they say, are much worse: many people don’t even realize what they see is neither real nor attainable.

Now the British government is taking up their cause. Next month, officials are sitting down with advertisers, fashion editors and health experts to discuss how to curb the practice of airbrushing and promote body confidence among girls and women. If the campaigners get their way, fashion ads and magazines in Britain may soon have to label retouched photos to warn people that the perfect bodies they see are but digital fantasies.

Coming just after London Fashion Week, which is under way, it’s the latest initiative in a long-running battle to force the fashion industry to show more diverse — and realistic — kinds of beauty.

“The trend does seem to be more and more ‘extreme Photoshopping.’ Everybody’s just moving towards Barbie dolls,” said Hany Farid, a professor specializing in digital photo forensics at Dartmouth College in New Hampshire. “I don’t think there’s a single photograph in those (magazines) that’s not retouched. They’re all manipulated to hell.”

Editors and ad managers have been making use of technology to improve the appearance of photographed models for some time. Before, it was taming the occasional stray hair or erasing a blemish. These days much more extensive trickery is approved without anyone batting a lash: flabby stomachs are tightened, necks and legs are lengthened, and bosoms are reshaped. The result: a flawless body shape no amount of dieting or cosmetic surgery can achieve.