I don't see how any of this of any of your concern, or business, but: I started at age 13, heavy drinking that is (Binge drinking, or whatever the term is), and I went out at least thrice a month, at the max 8 times(Every friday and saturday).
I kept this trend until I was 17 I think.
I drank somewhere between 10 and 20 units in a night at age 13 and 14, I think, moving up to somewhere between 50 and 60 in a weekend at age 15 and 16.
I never blacked out, never passed out, never woke up with insomnia and black holes.
I stopped such hardcore drinking when older, not because it wasn't fun, but because it got way too expensive, also I kinda lost the feeling for partying all the time. Also later I had to drive: I've never driven while drunk.
A routine check at the doctors, involving a blood sample, last year gave me the heads up, some numbers about my liver were about 4 times what they should be. I don't know the details.
Please understand that this is not to brag or anything, not at all, you just asked, and I answered. Although I am quite proud of myself, for being able to drink anyone under the table.
Don't worry about me, though, apart from a red nose there is nothing to wrong with me. And the red nose is slowly fading away as well
Edit: Oh, and about your wording: My liver isn't/wasn't dead, it was just getting there.