Crack cocaine is a highly addictive drug that can have major effects on the brain. Chronic use of crack cocaine can lead to increased anxiety and paranoia, as well as impaired cognition and memory. Crack cocaine can also cause changes in the brain's dopamine system, which is responsible for reward and motivation. These changes can make it difficult for people who use crack cocaine to feel pleasure from anything else in their lives, leading them to continue using the drug despite the negative consequences. In addition, crack cocaine use can lead to structural changes in the brain, including damage to the white matter that connects different regions of the brain. This damage can lead to problems with executive functioning, attention, and decision-making. Consequently, crack cocaine use can have a profound impact on almost every aspect of a person's life.