In every generation, it seems, the same lament goes forth from the parents of adolescents: "What's the matter with kids today? Accidental deaths, homicides, and binge drinking spike in the teenage years. It's the time of life when psychosis, eating disorders, and addictions are most likely to take hold. Surveys show that everyday unhappiness also reaches its peak in late adolescence.
Neuroplasticity - Wikipedia
Low levels of marijuana use — as few as one or two times — may change the teen brain, according to a new study. The study , which looked at the brains of 46 year-old girls and boys from Ireland, England, France and Germany, found that teenagers who reported using recreational marijuana just once or twice displayed increased volume on MRI images in numerous brain regions involved in emotion-related processing, learning and forming memories. The results of the study were published Monday in the Journal of Neuroscience. The study did not say what the increased brain matter volume means, but the researchers noted that the enlargement of gray matter contradicts normal adolescent development. Another possibility is that the cannabis use has led to a growth in neurons and in the connections between them. It's not the first research to find that cannabis use may cause changes to the teen brain. A recent study found that teen brains are more vulnerable to the effects of marijuana than alcohol.
Even a little marijuana may change teen brain, study finds
By Clare Wilson. During his PhD, Steven McCarroll was surprised to receive a phone call from an old classmate — and startled to find the call came from prison. His friend had been walking down the street when he was gripped by the conviction that people were chasing him, and broke into an apartment to hide.
The mysterious goings-on inside teen brains have befuddled countless parents over the years. Now some insights are being provided by recent neuroscience research. Between ages 11 and 17, children's brain waves reduce significantly while they sleep, a new study found. Scientists think this change reflects a trimming-down process going on inside teenagers' brains during these years, where extraneous mental connections made during childhood are lost.