This is an accurate description of alcohol effect because poison is defined as, "a substance that is capable of causing the illness or death of a living organism when introduced or absorbed". Alcohol damages the liver, which, over decades of regular alcohol intake, can cause liver failure, which could cause death.
Just... just don't drink. or at least don't do it regularly
It goes up because as the molecules hit each other they explode or implode depending on the pressure build-up and when they blow up, they release energy making the pressure higher.