You know...the way you said 'I'm in control' is a bit of a red flag to me. I'm no psychologist, but when someone says that then I'm worried. Look, the fact that you have concerns means that you do, on some deep level, think that you drink too much. Also 'They may or may not admit it to anyone else or even to themselves', are you sure you aren't in this group? The amount you drink seems too much in my experience, and it looks to me that you may be asking me to tell you this, so that you have the impetus to reduce your intake. But yes - zero points should be 'SAFE', but then if you say something is safe, then someone dies because they are not protected by the cardio-protective amount of a small amount of alcohol...Law-suits ahoy. All the tools to diagnose alcoholism, are just that - tools. At the end of the day, you need a proper medical assessment if you want to diagnose it properly.