Sweet Smell of Success: Simple Fragrance Method Produces Major Memory Boost When a fragrance wafted through the bedrooms of older adults for two hours every night for six months, memories skyrocketed. In fact, participants in this study by neuroscientists from the University of California, Irvine (
Research found that senior citizens exposed to specific scents nightly showed a 226% memory boost. This highlights the potent link between smell and memory, presenting a potential tool against dementia. A related product is launching this fall.When a fragrance wafted through the bedrooms of older adults for two hours every night for six months, memories skyrocketed.
People in the enriched group showed a 226% increase in cognitive performance compared to the control group, as measured by a word list test commonly used to evaluate memory. Imaging revealed better integrity in the brain pathway called the left uncinate fasciculus. This pathway, which connects the medial temporal lobe to the decision-making prefrontal cortex, becomes less robust with age. Participants also reported sleeping more soundly.
The study’s first author, project scientist Cynthia Woo, said: “That’s why we reduced the number of scents to just seven, exposing participants to just one each time, rather than the multiple aromas used simultaneously in previous research projects. By making it possible for people to experience the odors while sleeping, we eliminated the need to set aside time for this during waking hours every day.
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