A new study finds that dementia risk might be more determined by lifestyle rather than age. According to recent Baycrest research, adults without dementia risk factors like smoking, diabetes, or hearing loss had brain health comparable to that of those who are 10 to 20 years younger than them. Acco
The study found that each of the risk factors led to a decrease in cognitive performance of up to three years.According to recent Baycrest research, adults without dementia risk factors like smoking, diabetes, or hearing loss had brain health comparable to that of those who are 10 to 20 years younger than them.
According to the research, only one dementia risk factor can age a person’s cognition by up to three years. “Our results suggest lifestyle factors may be more important than age in determining someone’s level of cognitive functioning. This is great news since there’s a lot you can do to modify these factors, such as managing diabetes, addressing hearing loss, and getting the support you need to quit smoking,” says Dr. Annalise LaPlume, Postdoctoral Fellow at Baycrest’s Rotman Research Institute and the study’s lead author. The research is one of the first to look at lifestyle risk factors for dementia across the entire lifespan. “While most studies of this nature look at mid- and older-adulthood, we also included data from participants as young as 18, and we found that risk factors had a negative impact on cognitive performance across all ages. This is crucial as it means risk factors can and should be addressed as early as possible,” says Dr. Nicole Anderson, Senior Scientist at the RRI, Associate Scientific Director of Baycrest’s Kimel Family Centre for Brain Health and Wellness, and senior author of this study.& Dementia: Diagnosis, Assessment, and Disease Monitoring , a journal of the Alzheimer’s Association, included data from 22,117 people aged 18 to 89 who completed the Cogniciti Brain Health Assessment, developed by Baycrest. Participants took the test in their own homes by going to the Cogniciti website. The test takes around 20 minutes to complete and consists of a background questionnaire and four cognitive tasks. The researchers examined how eight modifiable risk factors for dementia—low education , hearing loss, traumatic brain injury, alcohol or substance abuse, hypertension, smoking , diabetes, and depression—affected participants’ performance on memory and attention tests. Each factor caused a reduction in cognitive function that was equivalent to three years of age, with each additional factor having a similar effect. For instance, having three risk factors could result in a decline in cognitive function that is comparable to nine years of aging. As individuals aged, the consequences of the risk variables and their prevalence also rose. “All in all, our research shows that you have the power to decrease your risk of cognitive decline and dementia,” says Dr. LaPlume. “Start addressing any risk factors you have now, whether you’re 18 or 90, and you’ll support your brain health to help yourself age fearlessly.” Reference: “The adverse effect of modifiable dementia risk factors on cognition amplifies across the adult lifespan” by Annalise A. LaPlume, Ph.D., Larissa McKetton, Ph.D., Brian Levine, Ph.D., Angela K. Troyer, Ph.D. and Nicole D. Anderson, Ph.D., 13 July 2022,This study was funded by the Alzheimer Society of Canada, and the Natural Sciences and Engineering Research Council of Canada. With additional funding, the researchers could look further into the differences between normal agers and “super agers” – people who have the identical cognitive performance to those several decades younger than them.
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