Influencers are spruiking these three tests on social media, but they risk doing more harm than good

Experts warn of ‘over-diagnosis’ dangers as social media prompts the worried well to seek out unnecessary and expensive scans and blood tests

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Medical tests are marketed on social media as a way to empower people to take control of their health, but experts are warning to be wary of the harms influencers don’t mention.

Three controversial tests – full-body magnetic resonance imaging (MRI) scans, blood tests for testosterone levels and the Anti-Mullerian hormone (AMH) or “egg-timer” test, which surveys a woman’s egg count – are the focus of a campaign backed by the University of Sydney based on its own research trying to combat misinformation online.