Long term effects

Regular use of amphetamines may result in ongoing sleeping problems, anxiety and tension, high blood pressure and a rapid and irregular heartbeat. Other possible long-term effects include:
  • Malnutrition. Amphetamines reduce appetite, resulting in people being less likely to eat properly.
  • Psychosis. Frequent heavy use can cause "amphetamine psychosis". Symptoms may include paranoia as well as delusions, hallucinations and bizarre behaviour. These symptoms usually disappear a few days after the person stops using amphetamines.
  • glassReduced resistance to infections. Regular amphetamine users often don’t eat or sleep properly and are generally run down, so their resistance to infections is reduced.
  • Violence. People who use amphetamines regularly or in high quantities may become violent for no apparent reason.
  • Brain damage. There is some evidence that amphetamine use may damage brain cells. This damage can result in reduced memory function and possibly other impairments in thinking.