Dxm, to directly answer your question, yes, 5-10 x 600ml beers a day is an unhealthy amount to drink. You should really try to aim to have at least 3 alcohol-free days a week (most doctors will probably say 5 alcohol-free days a week but start with aiming for 3
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It's really great that you recognise that you could potentially have a problem, especially because your dad is an alcoholic. I have been guilty in the past of thinking that becoming an alcoholic was out of my control because I know it runs in my genes. But that's bullshit. It's within YOUR power to change the path you're on. Just be wary of your drinking habits and try to cut down as much as you can.

It's really great that you recognise that you could potentially have a problem, especially because your dad is an alcoholic. I have been guilty in the past of thinking that becoming an alcoholic was out of my control because I know it runs in my genes. But that's bullshit. It's within YOUR power to change the path you're on. Just be wary of your drinking habits and try to cut down as much as you can.