In addition, alcohol has a profound effect on the frontal lobe- the part of the brain that allows us to analyse and program our behaviour. It also allows us to convert experience to memory and is responsible for the formation of our “self-image”. These processes require a tremendous amount of energy. The depressant nature of alcohol directly lowers die energy centre in the brain. Those who lower the energy levels in the brain by using alcohol or other toxic chemicals, lose not only mental capacity, but their ability to realise they have lost it.