Is there such thing as an iron liver? Guy downs big ass bottle of Absolut Vodka

I'm seeing a lot of people out there dropping photos on Facebook/Instagram etc. drinking (pretending to drink) a bottle of Grey Goose or some shit when they're out in the club.

No one backs a drink like this man though!

This man here, Youtube account Shoenice22 takes a full bottle of Absolut Vodka (That's 40%) and down's it like water.
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I've since heard rumours like "he's dead now" and "he was in hospital for weeks after" etc. Anyone actually know what's going on with this guy? Can someone really do this kind of stuff without doing serious damage to his liver?

~ Cee