"One analysis showed that increased screentime (six hours a day or more) can lead to decreased grey matter. Grey matter is where information processing happens. About 40 percent of the brain consists of grey matter. It's where most of the neuronal structures are, which means it's where the most important brain functions take place. The Cleveland Clinic explains, "Grey matter is the place where the processing of sensation, perception, voluntary movement, learning, speech, and cognition takes place.""
"The same study found that too much screentime also decreased the amount of white matter, which is where a lot of the communication between brain regions takes place. It's white because it's made of a fatty substance called myelin that helps speed communication throughout the brain. Reduced grey matter is linked with dementia. The abovementioned study shows a possible link with screentime and the development of early-onset Alzheimer's disease. The CDC predicts that the prevalence of dementia will increase twofold in future generations as a result."
Six or more hours of daily screen time associates with decreased grey matter and reduced white matter. Grey matter, making up about 40% of the brain, supports sensation, perception, voluntary movement, learning, speech, and cognition. White matter, rich in myelin, facilitates communication between brain regions. Reduced grey matter correlates with increased dementia risk and may contribute to early-onset Alzheimer's disease. Predictions indicate dementia prevalence could double in future generations. Excessive screen time also associates with lower IQ scores, increased cognitive impairment, and higher rates of mental illness. Heavy reliance on AI chatbots produces similar cognitive patterns linked to screen overuse.
Read at Psychology Today
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