While not approved in Australia, the procedure is on the rise in the US. But there are questions of safety – and the ethics of using donated tissue to plump up the living

With people getting everything from salmon sperm to plasma injected into their faces in the name of beauty, it is difficult to be surprised when new, even seemingly extreme methods to achieve youthfulness are promoted.

But Dr David Sparks, a specialist plastic surgeon based in Queensland, was alarmed when he heard patients were asking about cadaver fillers, a trend being promoted on social media as “zombie filler”.

Melissa Davey is Guardian Australia’s medical editor

Antiviral is a fortnightly column that interrogates the evidence behind the health headlines and factchecks popular wellness claims

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