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Researchers Considered Other Health Factors
To strengthen the findings, scientists adjusted for several well-known risk factors, including:
High blood pressure
Smoking
Physical inactivity
Other cardiovascular risks
Even after these adjustments, the three key sleep habits remained associated with greater white matter damage, suggesting that sleep itself may independently influence long-term brain health.
However, because this was an observational study, it cannot prove cause and effect.
Tips for Better Brain Health Through Sleep
Experts recommend:
Aim for 7–9 hours of sleep every night.
Keep a consistent sleep and wake schedule.
Avoid caffeine late in the day.
