Dr. Charles Sophy, discusses the effects drugs and alcohol have on the human brain. Dr. Sophy describes how the brain is affected by changes in the balance of chemicals. This in turn makes changes to mood, anxiety levels and behaviors. He explains how the brain of an addict and non-addict differs. People with an addiction are normally found with a genetic predisposition. The brains differ in various ways one of which being; when in emotional pain an addicted brain will seek to sooth through harmful self-medication of drugs and alcohol. Non-addicted brains will sooth either by themself or through healthy alternatives to drugs.