Biological explanations of addiction suggest that substances like nicotine cause addiction by increasing dopamine activity in the brain’s reward system. This has led to the development of treatments such as varenicline (Champix), which helps reduce smoking addiction. care I mine works by binding to nicotine receptors, triggering a moderate dopamine release that reduces withdrawal symptoms and cravings. At the same time, it blocks nicotine from activating these receptors, so smoking becomes less rewarding. This supports the biological explanation by showing how manipulating dopamine pathways can help reduce addictive behaviour.
