Our sense of smell is often overlooked, but it is actually a very powerful sense that can have a significant impact on our brain health.
As we age, our sense of smell can decline. A new study by researchers from the University of California, Irvine, has recently found strong evidence suggesting that certain smells could be essential in maintaining the brain’s agility as it ages.
The link between smell and memory may have significant implications for cognitive health in old age.
Loss of the ability to smell, also known as anosmia, can be a predictor of a number of neurological and psychiatric diseases including Alzheimer’s, dementia, Parkinson’s, schizophrenia as well as alcoholism.
In a study conducted by UCI neuroscientists, older adults between the ages of 60 and 85 were exposed to different aromas for two hours every night for six months.
The study revealed a significant 226% increase in cognitive capacity.
The participants, who showed no memory impairments, were given diffusers with seven cartridges containing various natural oils. Those in the control group received the same oils but in smaller amounts.
After using all seven cartridges, memory tests and brain imaging revealed improved cognitive function and better sleep quality for the participants.
The new study also explores the potential of using odors as a non-invasive method to deter dementia. The research was published in the journal Frontiers of Neuroscience.
