Study Finds Sleep Sweet Spot That May Cut Dementia Risk Dramatically

Seven to eight hours appears to be the key

A new large-scale study suggests a sleep “sweet spot” of about 7 to 8 hours nightly may lower dementia risk. Researchers found the brain-health benefits are even stronger when paired with regular exercise and fewer sedentary hours. The findings point to practical daily habits that could meaningfully reduce the odds of developing dementia later in life.