Biological approach to smoking

• Genetic mutations can alter enzymes which are involved in metabolising nicotine which can later the chances of someone becoming addicted to a substance.
• Genetic factors may affect how susceptible a person is to becoming addicted to smoking.
• For nicotine dependence 75% of the variation between individuals was explained by genetic factors.
• Nicotine will attach to the nicotine resceptors on cells which releases dopamine, this release leads to feelings of joy and pleasure.
• The biological approach is not a complete explanation of smoking as it is reductionist.