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Why Joe Wicks' 'deadly' protein bar that causes 'stroke, cancer, diarrhoea and death' is completely legal

Home> Lifestyle> Food & Drink

Published 18:53 30 Sep 2025 GMT+1

Why Joe Wicks' 'deadly' protein bar that causes 'stroke, cancer, diarrhoea and death' is completely legal

The reason behind the deadly snack has been revealed

Brenna Cooper

Brenna Cooper

Featured Image Credit: Instagram/Joe Wicks

Topics: Food And Drink, Health, Channel 4, Documentaries

Brenna Cooper
Brenna Cooper

Brenna Cooper is a journalist at LADbible. She graduated from the University of Sheffield with a degree in History, followed by an NCTJ accredited masters in Journalism. She began her career as a freelance writer for Digital Spy, where she wrote about all things TV, film and showbiz. Her favourite topics to cover are music, travel and any bizarre pop culture.

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@_brencoco

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This is the reason why a 'deadly' protein bar created by Joe Wicks is entirely legal to sell in the UK.

Earlier today, the fitness guru revealed that he'd teamed up with Professor Chris van Tulleken to create his very own protein bar, a snack which is becoming increasingly popular amongst young fitness fanatics around the world.

Despite typically tasting of chalk, the main selling point for such products is claims about high levels of protein, vitamins, minerals and fibre, all things which are required for a healthy diet.

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However, Wicks' addition to the market is a little more unconventional than other brands.

Named 'Killer', the protein bar claims to be the 'most dangerous health bar' on the market and contains ingredients which can cause 'strokes, cancer, diarrhoea and even death', which is certainly a choice when it comes to promoting a product.

Joe Wicks is back, with a killer protein bar (Channel 4)
Joe Wicks is back, with a killer protein bar (Channel 4)

So why have Wicks and van Tulleken decided to create a product packed with ingredients linked to various health concerns?

It's part of a new campaign by the pair aimed at raising awareness about the potential health risks associated with ultra-processed foods.

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"A big part of the problem is that unhealthy food comes without warnings," van Tulleken wrote about the project for MailOnline, adding that he and Wicks are 'furious' about this.

The launch of the deadly protein bar coincides with Wicks' latest documentary, Joe Wicks: Licensed To Kill, which aims to expose the dangers of consuming ultra-processed food.

Naturally, you'd assume the food which makes it to the shelves in our supermarkets would be safe to eat and free of ingredients which may cause various health issues or even premature death.

However, this is not the case, according to Wicks and van Tulleken. So why are these items legal to sell?

Describing the bar as an 'extreme' version of products currently found on supermarket shelves, van Tulleken revealed all the legal yet potentially harmful ingredients they used in making Killer bars.

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The list includes maltitol, a sugar alcohol which can lead to diarrhoea, as well as aspartame, a sweetener which the World Health Organisation has deemed a carcinogen and potentially increases your risk of stroke, and maltodextrin, a sweet thickener which can lead to intestinal inflammation.

The bar is created from completely legal ingredients despite adverse health impacts (Channel 4)
The bar is created from completely legal ingredients despite adverse health impacts (Channel 4)

Now this isn't to say that every protein bar on the market will cause the above side effects, but the pair are hoping the stunt will lead to increased awareness around the dangers of following a diet which is made up of mostly ultra-processed foods.

"There really is a strong and growing body of science and evidence now to show that these foods are damaging our health," Wicks added.

"I really believe we shouldn't accept this as the norm and carry on as we are. We deserve a chance to eat better."

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Joe Wicks: Licensed to Kill will air on Channel 4 next Monday (6 October) at 8pm.

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