Neuroscientists say Gen Z may be showing a decline in cognitive skills versus earlier generations, challenging the decades-long Flynn effect that linked rising IQ scores to better environments. Increased smartphone use and digital habits are cited as possible drivers, affecting attention and memory patterns in ways that may hinder learning. Experts urge rethinking how tech shapes developing minds.
A US government report by the National Toxicology Program reviewed global studies and found a consistent association between higher fluoride levels in drinking water and lower IQ in children. The analysis flags levels above 1.5 milligrams per liter as most concerning, while noting more research is needed to confirm mechanisms and guide potential policy changes.
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