After analyzing 200 videos, Marketplace found about 80 per cent of those reviewed featured treatments or cures for autism and cancer that are not supported by science. (Adobe Stock)

TikTok has become a go-to source for health advice for millions of people. But when you search for treatments for cancer and autism, the vast majority of the videos first served to you feature claims about treatments th at are not supported by science, a new test by has found.

journalists analyzed 100 videos discussing cancer treatments and another 100 for autism therapies. We found that at least 80 per cent of the remedies in the videos — totalling more than 75 million views — weren’t supported by scientific evidence.

Many of these clips get traction because they are grounded in compelling personal stor

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