A scientist claims he's 'immune to venom' after allowing himself to be bitten by the world's deadliest snakes hundreds of times.

Tim Friede has inflicted himself with more than 200 bites from snakes that could kill within minutes in a bid to help develop life-saving vaccines.

He claims he is the only person in the world who could now survive back-to-back snake bites, reports the Mirror.

The 39-year-old has even taken on a sub-Saharan Black Mamba, which is widely considered the 'world's deadliest snake', with a bite that could result in a very painful death within 15 minutes.

Speaking to The Wizard of Odd TV at his home in Du Lac, Wisconsin, Tim allows a Black Mamba snake to bite him three times in his finger and once into his arm, which causes immediate swelling as the deadly poison is injected directly into his bloodstream.

Comparing the pain sensation to like 'being struck with a hammer', Tim winces at the relentless throbbing feeling in his finger and arm, but credits his survival to millions of anti-bodies he's accumulated during his two decades of research.

Hoping to create a universal human anti-venom, Tim claims to be the only person in the world who could survive back-to-back snake bites.

He said: ‘I put my life on the line every day for one reason: to save people.

‘The reason I inject myself with venom and get bitten by snakes is for a larger purpose and that purpose is to create a universal human anti-venom.

‘For the past 17-and-a-half years I've been using seven snakes to become immune - proving that you can build up immunity to venom.

‘A Black Mamba is one of the most venomous snakes in the world and you can easily die in 20-30 minutes - it's a nasty snake with a really aggressive nature.

‘When you're bitten by a Black Mamba, it's basically like getting hit with a hammer in your face - it's a throbbing sensation and it feels like it's broken.

‘It can last up to two or three days before it goes away.

‘This [the four bites] was one of the most extreme I've ever taken.

‘I've never had four bites from one snake before - I did it to see how far I can take it, I love to push the limits and that's what needs to be done to prove it works.

‘My hands are swollen which means there's venom injected.

‘If they weren't swollen, there'd be no venom injected so it clearly proves that self-immunization works to the very highest level.’