Muniz, the star of hit comedy 'Malcolm in the Middle', has been plagued with internet rumours that he has no memory of his time on the show. Talking on Steve-O's podcast this week, he cleared up the gossip once and for all.
Steve-O began by saying, "So [co-host Paul Brisske] was saying that he read that you suffered a bunch of concussions, which make it difficult for you to remember."
Muniz, now 36, replied, "It's interesting, I've thought about it a lot over my years like 'why do I have a bad memory?'. The only logical thing I can say is, 'yeah, I've had nine concussions'".
On the origins of his head injuries, he explained, "when I was a kid playing basketball and I'd get tripped. I played football. Just doing life things, sports. There were some in racing accidents."
Muniz has had a keen interest in cars. He has raced formula cars competitively, including being a pace car in the Daytona 500 in 2001.
The actor continued about his concussions, "I've gone to a lot of doctors over it and looked into it. As weird as it sounds. I don't want to blame the concussions. I just think it's the fact I did so f**king much in that timeframe that, of course I don't remember all of it. A lot of my memories now are that I can't distinguish if it were a dream or if it was reality. "
The new father also discussed more internet rumours that he had suffered "mini-strokes" throughout his life.
"I was having these episodes where I'd have numbness, I couldn't see, I'd lose my vision. And everyone was telling me you're having these TIE's (transient ischemic attacks) or mini-strokes. Nobody could give me a straight up answer.
"If you search my name, all it talks about is that I have no memory or that I'm dying of strokes. The reality is I finally got diagnosed with just aura-migraines, intense migraines.
But if you search my name it's basically 'Frankie is dying and he doesn't even know that he was Malcolm'. I'm like 'no I know'".
He attributed the rumours about his memory back to his stint on 'Dancing With The Stars' when they decided for him what his "most memorable year" was for a piece on the show.
"They were like 'it's 2001 because it's when you were nominated for an Emmy and the Golden Globes. And they were like you need to talk all about it. But I go, 'I don't remember what I felt then'. So it was me kind of blowing off the fact that I can't say that's my favourite year, because I can't tell you what happened in 2001. You would have to tell me what happened in 2001".
He then said on the show that his most memorable year is the present because he "learnt to live in the moment".
"I don't really remember [my time as Malcolm] but I wasn't saying I don't remember everything."
Watch the full clip below: