MIKE TYSON has revealed he was injected with nearly-translucent blood in his bid to make a comeback... and the former heavyweight champ said it made him feel "weird".

The 53-year-old - who retired from boxing in 2005 - has announced his intention to dust off the gloves and return to compete in exhibition bouts.

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His return to action has been aided by stem-cell research therapy, that has left him feeling like a "different person".

He said: "You know what I had done? I had stem-cell research therapy.

"I feel like a different person but I can't comprehend why I feel this way. It's really wild what scientists can do."

Stem-cell therapy is the use of stem cells to treat or prevent a disease or condition that usually takes the form of a bone marrow transplantation.

In a recent interview with rapper LL Cool J on the Rock the Bells Radio show on SiriusXM, Tyson opened up on the effects the treatment has had on him.

Commenting on the mental aspect of training for a fight for the first time in 15 years, he said: "My mind wouldnt belong to me.

"My mind would belong to somebody that disliked me enough to break my soul, and I would give them my mind for that period of time.

"Six weeks of this and Id be in the best shape Ive ever dreamed of being in. As a matter of fact, Im going through that process right now. And you know what else I did, I did stem-cell research."

Tyson was then asked whether that meant if his white blood had been spun and then put back in, to which he replied: "Yes. As they took the blood it was red and when it came back it was almost transfluid (sic).

"I could almost see through the blood, and then they injected it in me.

"And Ive been weird ever since, Ive got to get balanced now."

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MIKE DROPTyson return 'not something' Hearn wants to promote but 'intrigued' by comeback

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WHAT IS STEM CELL TREATMENT USED FOR?

Stem cell transplants are carried out when bone marrow is damaged or isnt able to produce healthy blood cells.

It can also be used to replace damaged blood cells as the result of intensive cancer treatment.

Here are conditions that stem cell transplants can be used to treat:

Iron Mike has been called out by former rival Evander Holyfield to complete their trilogy following their two meetings in 1990s.

And his unusual methods for getting back in shape seem to be working.

Tyson is looking in incredible condition as he uploaded a clip of himself that showed off his ferocious power and speed.

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Mike Tyson reveals doctors gave him translucent blood injection that left him feeling weird during stem cel - The Sun