The serious effects of meth
Methamphetamine, commonly known as meth or ice, is a highly addictive stimulant that affects the central nervous system. We know it can make people all “buzzy”, but it comes with serious short- and long-term effects on a person’s physical health, mental wellbeing and ability to work safely.
Understanding the effects of meth can help individuals recognise the risks of use and encourage employers to create safer, healthier workplaces through education, support and appropriate workplace policies.
What is methamphetamine?
Methamphetamine is a powerful synthetic stimulant that speeds up communication between the brain and body. It causes a surge of dopamine, a neurotransmitter involved in reward, motivation and pleasure, creating intense feelings of alertness and euphoria.
Methamphetamine may be swallowed, smoked, injected or snorted, with effects varying depending on how it is used and the amount consumed.
Although the initial effects may last several hours, the drug can remain in the body for 3 to 5 days, with physical and psychological effects sometimes continuing well beyond the period of intoxication. Even for weeks or months.
Immediate effects of meth
The effects of meth can occur quickly after use and vary depending on the individual and the amount consumed.
Common immediate effects include:
- increased heart rate
- elevated blood pressure
- rapid breathing
- increased body temperature
- dilated pupils
- reduced appetite
- difficulty sleeping
- agitation and restlessness
- anxiety and panic
- poor judgement
- impulsive or risk-taking behaviour
- aggression or irritability
- hallucinations or paranoia, particularly at higher doses.
These effects can significantly impair a person’s ability to think clearly, make safe decisions and respond appropriately to hazards in the workplace.
How meth affects the brain
Methamphetamine dramatically increases dopamine levels in the brain. While dopamine plays an important role in motivation and reward, repeated meth use can disrupt the brain’s normal chemistry.
Over time, the brain produces less natural dopamine, making it increasingly difficult for individuals to experience pleasure without the drug.
“…long-term use is associated with declines in dopamine, which can be responsible for feelings of losing control and compulsive drug taking.”
I can also cause a drop in serotonin which affects mood and behaviour and deplete noradrenaline, which is related to decreased alertness and attention.
“Long-term heavy use of methamphetamine, including ice, can change the structure and functions of the brain. Changes can result in abnormal brain tissue (grey and white matter), inflammation in the brain, and deficits in chemical messenger systems…”
Long-term meth use has also been associated with:
- impaired memory
- reduced concentration
- difficulty making decisions
- poor impulse control
- emotional instability
- anxiety
- depression
- paranoia
- psychosis in some individuals.
These changes can affect every aspect of daily life, including relationships, work performance and overall quality of life.
How meth affects the body
The effects of meth extend far beyond the brain and can impact multiple body systems.
Cardiovascular system
Meth places significant stress on the heart and blood vessels causing cardiovascular dysfunction and increasing the risk of high blood pressure, irregular heartbeat, heart attack, stroke.
Nervous system
Methamphetamine overstimulates the nervous system and may cause, tremors, muscle twitching, headaches, seizures in severe cases and ongoing sleep disturbances.
Mental health
Research shows that among those that had used meth recently, “…about 27% had been diagnosed or treated for a mental illness.”
Long-term use has been linked to anxiety, depression, paranoia, hallucinations, aggressive behaviour and psychosis.
Oral health
Frequent meth use is associated with severe dental problems, often referred to as meth mouth, including extensive tooth decay, gum disease, dry mouth and tooth loss.
Nutrition and physical health
Because meth suppresses appetite, prolonged use may lead to rapid weight loss, dehydration, malnutrition and weakened immune function. “Human studies reveal that individuals with SUDs [substance use disorder] frequently experience calorie and protein malnutrition…”
The effects of meth on workplace performance
“Among workers who use methamphetamine 7.3% usually use at work.” This is a concerning statistic.
“At the workplace, affected people may be at risk of experiencing or causing harm due to effects on coordination, judgement, behaviour and concentration. Even when someone is not currently intoxicated, they may have crash or withdrawal effects that can negatively impact on workplace safety.
Methamphetamine can significantly affect a person’s ability to perform their job safely and effectively,” as Methamphetamine in the workplace reports.
The effects of meth may contribute to:
- reduced concentration
- impaired judgement
- poor decision-making
- increased risk-taking
- slower reaction times following prolonged wakefulness
- fatigue once the drug wears off
- mood swings
- conflict with colleagues
- increased absenteeism
- reduced productivity.
In safety-critical roles and industries such as mining, construction, manufacturing, healthcare, transport and aviation, these effects can increase the likelihood of workplace incidents, injuries and near misses.
Recognising the warning signs
Managers and colleagues should never assume someone is using meth based on appearance or behaviour alone. However, recognising changes in behaviour may help identify when someone requires support or a fitness-for-work assessment.
If an employee appears impaired at work, managers should focus on observable behaviours rather than making assumptions about the cause.
Good practice includes:
- documenting observed behaviours objectively
- following the organisation’s drug and alcohol policy
- having a respectful and confidential conversation with the employee
- considering whether the employee is fit for work
- arranging workplace drug testing where appropriate and permitted by policy
- referring employees to available support services where appropriate.
Early intervention can help reduce workplace risks while supporting employee wellbeing.
Getting help
Methamphetamine dependence is a health issue, and recovery is possible with appropriate treatment and support.
Employees who are concerned about their own drug use, or worried about someone they know, should speak with a healthcare professional, contact the National Alcohol and Other Drug Hotline.
Employers can also play an important role by fostering a workplace culture that encourages early intervention, education and access to confidential support services. By increasing awareness and encouraging people to seek help early, employers can help protect both their workforce and their workplace.
If you need help implementing a drug and alcohol testing program into your workplace as a method of employee support, please reach out to our helpful team.