Rose Smell: Adults With Higher Smell May Have Lower Risk of Dementia, Research Shows-Health

Recent studies suggest that older people who smell rose, turpentine, thinner, and lemon may have a lower risk of dementia.

In a study at the University of California, San Francisco, researchers tracked nearly 1,800 participants in their 70s for up to 10 years to see if sensory function correlated with the development of dementia. At enrollment, all participants were free of dementia, but 328 participants (18%) developed symptoms during the course of the study.

Of those with a moderate sensory level, 141 of 328 (19%) developed dementia. This corresponds to 83 (12%) in the good range and 104 (27%) in the bad range, according to a study published in the journal of the Alzheimer’s Disease and Dementia.

UCSF researchers have focused on the additive effects of multiple impairments on sensory function. This evidence shows that it is a powerful indicator of cognitive decline.

“Sensory dysfunction can result from the same disease processes that affect cognition, such as underlying neurodegeneration or stroke,” said Willa Brenowitz, first author of the UCSF Department of Psychiatry and Behavior. Stated. Neuroscience.

“Alternatively, paresthesia, especially hearing and vision, can accelerate cognitive decline and directly affect cognition, or it may be indirectly affected by social isolation, diminished motor capacity, or poor mental health. Yes,” added Brenowitz.

Although multiple disorders were key to investigators’ work, the authors found that olfactory or sharp olfactory sensations were more strongly associated with dementia than touch, hearing, or vision. Participants with a 10% reduction in olfaction were 19% more likely to have dementia, while the risk of corresponding reductions in vision, hearing, and touch was increased by 1-3%.

“The olfactory bulb, which is important for olfaction, is affected much earlier in the course of the disease. Although olfaction is thought to be a possible preclinical indicator of dementia, hearing and vision are It could play a greater role in promotion,” said Brenowitz.

1,794 participants were recruited from a random sample of Medicare-qualified adults in a study of health, aging, and body composition. Cognitive tests were conducted at the beginning of the study and repeated every two years. Dementia was defined by tests showing a significant reduction from baseline scores, recording dementia drug use, or hospitalization for dementia as a primary or secondary diagnosis.

The multi-sensory test was conducted in the 3rd to 5th years, hearing (hearing aids were not allowed), visual contrast sensitivity test (glasses were allowed), vibration measured with the thumb of the thumb touch Test, smell included. Includes identifying unique odors such as paint thinner, roses, lemons, onions and turpentine.

The researchers found that participants who remained dementia-free generally tended to have high cognition at enrollment and no sensory impairment. Moderate people tended to have multiple mild disabilities or a single moderate to severe disability. High-risk participants had multiple moderate to severe disabilities.

Similarly, “We found that the risk of cognitive decline increases with a decrease in multisensory function in a dose-responsive manner,” as well as a senior author of the UCSF Psychiatry and Behavioral Sciences, Epidemiology and Biostatistics, and Neurology Division Said Dr. Christine Jaffe. As San Francisco’s VA healthcare system.

“Even mild or moderate sensory deficits that span multiple domains were associated with an increased risk of dementia. People with low polysensory function are subject to intervention before the onset of dementia.” It indicates a potentially high-risk population,” the author added.

780 participants with good multi-sensory function are more likely to be healthy than 499 participants with poor multi-sensory function, and some lifestyles play a role in reducing dementia risk It suggests that there is a possibility.

The former group is more likely to graduate from high school (85% vs 72.1%), has less diabetes (16.9% vs 27.9%), and is slightly less likely to have cardiovascular disease, hypertension, or stroke.

(This article has been published from the telegraph agency feed with no changes to the text. Only the headings have changed.)

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