Rose scent may help prevent brain atrophy and dementia; Kyoto University and others announced research in 2024. Smelling it for a month affects the brain: A little old Innovative Tech

Kyoto University researchers found that a month of rose essential oil exposure was linked to increased gray matter volume in healthy women.

The effect appeared in the posterior cingulate cortex, a memory-related area that is among the first to shrink in Alzheimer’s disease.

Women who wore rose oil on their clothing twice daily showed this change, while the water group did not.

The findings suggest repeated rose scent exposure could have potential value for brain health and dementia prevention.