“…Chronic health effects of exposure to methamphetamine are very poorly understood (71), particularly in relation to environmental exposures to low concentrations, compared with high doses associated with drug use. However, they may include: neurochemical changes in areas of the brain that are associated with learning, potentially affecting cognitive function, behaviour, motor activity and changes in avoidance responses (106); psychotic, physiological and behavioural/developmental effects that include violent behaviour, depression, irritability, hallucinations, mood swings, paranoia, mood and sleep disorders that are associated with exposure to, or use of, methamphetamine (75,(106)(107)(108)(109)(110); as well as effects associated with exposure to the range of chemicals present, that includes cancer and effects on respiratory, renal, hepatic, neurological, developmental and reproductive systems (5).…”