Dominic D'Agostino may have a genetic predisposition affecting his skin's ability to synthesize vitamin D, similar to individuals with dark skin or keloid formation.

“So I form keloids. Like this was a big...if I get a cut, I form keloids like African Americans do with dark skin. So, I was thinking that there's something, you know, biochemically in my skin, although I don't have like an over-production of melanin, but I have aspects of that, of having darker skin, especially like in forming keloids. So I'm thinking there's something in my skin, I'm not synthesizing it.”