Spiralling demand for weight loss products has led to dangerous black market sales on social media of fake jabs that are potentially deadly, a Channel 4 News investigation has uncovered.

We reveal how powerful counterfeit weight loss jabs – including a fake version of a new product, still in development and not yet approved for human use – are being sold online and injected without medical oversight.

This leaves buyers gambling with unknown chemicals, and potentially their lives, in a market that one MP described as “alarming”.

Reporter undercover: Sophie Braybrook

I bought a fake weight loss injection online. It didn’t take me long to find a couple promoting weight loss injections on Facebook and Instagram.

After exchanging just a few messages, I was added to a WhatsApp group

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