Marijuana may have a greater impact on brain health than alcohol, according to psychiatrist and brain imaging specialist Dr Daniel Amen. However, experts note that some of his conclusions remain debated within the wider scientific community.
Brain Imaging Research Raises Health Concerns
Dr Amen said brain imaging research by Amen Clinics linked marijuana use to accelerated brain ageing. Furthermore, he described marijuana as the second strongest factor associated with faster brain ageing after schizophrenia.
According to Dr Amen, the clinic has analysed more than 62,000 brain scans. He said the findings showed schizophrenia had the strongest association with accelerated brain ageing.
Dr Amen also claimed marijuana was “worse than alcohol” regarding its effect on brain ageing. Additionally, he explained that the drug slows nerve cell activity, creating a temporary calming effect.
He said this may help people with anxious or overactive minds feel relaxed. However, he warned that the same process could damage the structure of neurons over time.
Young Users Face Greater Mental Health Risks
Dr Amen said young marijuana users face a 450 percent higher risk of developing psychosis later in life. He also warned that children and teenagers who use marijuana may experience anxiety, depression and suicidal behaviour during adulthood.
According to Dr Amen, frequent marijuana use could produce lasting effects on brain development. Consequently, he urged greater awareness of the potential risks associated with early drug use.
Although many studies have linked heavy marijuana use with cognitive impairment and psychosis, researchers continue debating some of Dr Amen’s broader conclusions. Therefore, his ranking of marijuana as the second biggest driver of accelerated brain ageing is not considered a universal scientific consensus.
