Williams revealed he suffered multiple concussions before retirement, including one three weeks before facing Eubank Jr, when he was floored four times.
“If you go and have another concussion you can drop dead. That was a bit of an idiot move from me [fighting Eubank Jr], but me being a fighter I thought I could still do it,” he said.
“I was losing too much weight. That last week, losing the best part of a stone in the 12 to 18 hours before the weigh-in, it’s a big ask to recover from that.
“I was standing on the scales thinking, ‘I’m going to fall over’.”
After those struggles to make the 11st 6lbs (160 lbs) middleweight limit, Williams did not rule out a repeat at that weight but was intending to return eight pounds heavier at the “safe option” of super-middleweight.
Despite his new lease of life, thoughts of CTE remain on his mind.
“It always has been because I have got children which I have to think about,” he said.
“It was much more of a worry at this point two years ago. Now I’ve got my stuff together and I’m doing things right.
“I feel much healthier than I was back then, head and body. I have had a number of brain scans and everything is checking out.”
