Ozzy Osbourne is an evolutionary miracle. Science has, once and for all, concluded that the rocker is an abnormality.

Quick high school science flashback: everyone has a unique sequence of Deoxyribonucleic acid, or, as it’s usually called, DNA. It looks kinda like a staircase made of bubbles. DNA is basically the way you inherit traits from your parents-like the reason you’re a ginger (actually, that’s a recessive gene). DNA also makes copies of itself-but sometimes the copies get all messed up. That’s called a mutation. Depending on outlying factors, mutations can be either detrimental or beneficial to the individual.

Now you can win pub trivia night, or impress your friends. Moving right along.

Recently, Ozzy submitted a sample of his blood to have his genome (fancy term for lineage, but also useful for medical testing) analyzed. He explained: “I was curious…Given the swimming pools of booze I’ve guzzled over the years—not to mention all of the cocaine, morphine, sleeping pills, cough syrup, LSD, Rohypnol…you name it—there’s really no plausible medical reason why I should still be alive. Maybe my DNA could say why.”

The laundry list of drugs is enough to make the most seasoned scientist agree with Ozzy. How the hell did this guy survive to see his daughter on Fashion Police?

It turns out he has variants in his genes-in his DNA-regarding addiction. For instance, the gene that breaks down alcohol-aldehyde dehydrogenase-in Ozzy is weird. It has an odd way of regulating the amount of protein made-and also explains alcoholism. Furthermore, high levels of aldehyde dehydrogenase create the toxin Acetaldehyde. That’s basically the gatekeeper of how drunk you can get without your frat bro Chad drawing a dick on your face.

Variants like the above are rare, and were a stunning find. Ozzy celebrated the findings by biting one of the scientists’ heads off. Know more.