
A biohacker has revealed that he had cells from his buttocks injected into his face as part of a radical 'facial circumcision'.
Humans are, on average, living longer than ever, with the life expectancy for both men and women in the UK sitting around 81 years.
However, this isn't enough for some enterprising individuals who've got the goal of living forever in their sights.
Anyone familiar with the topic of biohacking will be familiar with Bryan Johnson, the man who's spending around $2 million (£1.5 million) a year in a bid to reverse his age.
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Johnson isn't alone in his mission to extend his lifespan either, as there's another man in the US looking to take his crown.
Known as the 'Father of Biohacking', businessman Dave Asprey has built a platform with his quest for longevity - and it involves going to some pretty extreme measures.

Although his life revolves around diet and fitness nowadays, Asprey says he hasn't always been a picture of health. In-fact, his twenties were plagued with illnesses such as brain fog, arthritis, and pre-diabetes.
However, Asprey has completely turned his life around in the past few years and now dedicates his time to being as healthy as possible.
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He even has the ambitious goal to live until 180, which is more than double the average life expectancy for a person in the US.
His mission has also led him to undergo some pretty radical procedures, as this year the 51-year-old travelled to a regenerative medicine clinic in Costa Rica in order to have a 'facial circumcision'.
To anyone who is unaware with this rather ominous sounding procedure, a facial circumcision is a non-surgical treatment which aims to address signs of aging by tightening the skin.
Explaining why he decided to have the treatment, Asprey revealed that he's carrying 'about half of a large bath towel worth of extra skin' after being overweight in his younger years.
"I don’t love having all of that," he told The New York Post.
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"You can tighten it but it doesn’t matter when you still have too much," Asprey continued. "So I elected to get a facial circumcision."
Asprey had a total of 28 square inches of skin removed from his face, which he followed up by having an injection of fact and stem cells from his buttocks put into his face.
The aim of this, he says, is to improve recovery.
"I’m very happy with the results," he said. "It was totally worth it."
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Asprey has also hit back at critics who've branded his actions extreme, telling This Morning that he believes anti-ageing will become as a common as using a smartphone in the near future.
"Everyone will have anti-ageing," he said. "There will be many people who are under the age of 40 right now who will be more than 100 years old - it is guaranteed."