How much alcohol is allowed? Alcohol is a systemic poison, which means it can affect your hair to toe. The most important aspect is that it can affect every organ system in your body. Don't look at it as whatever people used to think was that you have to be a chronic alcohol user. You have to drink every day for 10 years. Only then you do get damaged. That is how it is. I'm not going to drink like that. I'm going to take a few alcohol shots every week, so I'm okay. That myth is now busted. It's not there anymore because the safest level of alcohol for human health is zero..