World Alzheimer's Day- Constant exposure to noise pollution may increase the risk of dementia caused due to Alzheimer's disease while music could have positive impact, say doctors.
According to a recent study published in international health journals around the world, constant exposure to traffic noise increases the risk of dementia among aged population.
Each year, September 21 is commemorated as the World Alzheimer's Day, and Alzheimer's disease has been found to be the commonest cause of dementia.
Doctors say with India fast racing towards becoming the most populated country in the world, and with improved healthcare delivery mechanism, aged population is on the rise in the country. This section of the society is at the risk of developing age-related complications like dementia, which is often considered a serious mental problem caused by brain disease or injury, that affects the ability to think, remember and behave normally.
Commenting on the problem, Sritheja Reddy, Consultant Neurologist, Gleneagles Global Hospital believes that music usually has a soothing effect on individuals of all ages, but loud and persistent noise can cause mental disturbance, and could even trigger experiences of ill being among those people who are suffering from dementia or Alzheimer's related problems. "Cities are usually bustling with great activity during the day times and in the nights, but this could increase exposure to excessive noise, that can lead to short term impairments in cognitive function, particularly with respect to the ability to focus and remember. And the most important aspect here is that chronic exposure to noise pollution may increase the risk for dementia," the doctor said.
Abhinay M. Huchche, Consultant Neurologist, SLG Hospitals says that musical sounds could have a positive impact on people suffering from dementia, caused due to Alzheimer's disease." Listening to or singing songs can provide emotional and behavioral benefits for people with Alzheimer's disease and other types of dementia. Musical memories are often preserved in Alzheimer's disease because key brain areas linked to musical memory are relatively undamaged by the disease," he added.
Changala Praveen, Consultant - Neurophysician, Aware Gleneagles Global Hospital pointed out that ageing patients require extra attention, and those impacted by dementia require proper evaluation and management of the disease through a multidisciplinary approach. "Alzheimer's disease is the most common cause for dementia, and there are multiple reasons for aged population developing this problem. Constant exposure to loud and unsavoury sounds like traffic noise is also a major cause for the older people to develop dementia. People who have aged family members in the house must ensure the elderly are protected from loud noises, and this is the best solution to arrest complexities," he said.
Having exposure to high levels of noise during the night is especially concerning, as sleep is a critical period for mental and cognitive restoration. Fragmented sleep resulting from noise disturbance is associated with increased oxidative stress causes alterations in the immune system and increased systemic inflammation.
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New Delhi, Aug 5 (IANS) There is a link between improving air quality and a reduction in the risk of dementia, a new research in the US has shown.Using data from two large, long-running study projects in the Puget Sound region -- one that began in the late 1970s measuring air pollution and another on risk factors for dementia that began in 1994 -- University of Washington (UW) researchers identified a link between air pollution and dementia.In the UW-led study, a small increase in the levels of fine particle pollution (PM2.5 or particulate matter 2.5 micrometers or smaller) averaged over a decade at specific addresses in the Seattle area was associated with a greater risk of dementia for people living at those addresses."We found that an increase of one microgram per cubic meter of exposure corresponded to a 16 per cent greater hazard of all-cause dementia. There was a similar association for Alzheimer's-type dementia," said lead author Rachel Shaffer, who conducted the research as a doctoral student in the UW Department of Environmental and Occupational Health Sciences.The study, published on August 4 in the journal Environmental Health Perspectives, looked at more than 4,000 Seattle-area residents enrolled in the Adult Changes in Thought (ACT) Study run by Kaiser Permanente Washington Health Research Institute in collaboration with UW.Of those residents, the researchers identified more than 1,000 people who had been diagnosed with dementia at some point since the ACT Study began in 1994."The ACT Study is committed to advancing dementia research by sharing its data and resources, and we're grateful to the ACT volunteers who have devoted years of their lives to supporting our efforts, including their enthusiastic participation in this important research on air pollution," said Eric Larson, ACT's founding principal investigator and a senior investigator at KPWHRI.Once a patient with dementia was identified, researchers compared the average pollution exposure of each participant leading up to the age at which the dementia patient was diagnosed.For instance, if a person was diagnosed with dementia at 72 years old, the researchers compared the pollution exposure of other participants over the decade prior to when each one reached 72.In these analyses, the researchers also had to account for the different years in which these individuals were enrolled in the study, since air pollution has dropped dramatically in the decades since the ACT study began.In their final analysis, the researchers found that just a one microgram per cubic meter difference between residences was associated with 16 per cent higher incidence of dementia.To put that difference into perspective, Shaffer said, in 2019 there was approximately one microgram per cubic meter difference in PM2.5 pollution between Pike Street Market in downtown Seattle and the residential areas around Discovery Park."We know dementia develops over a long period of time. It takes years -- even decades -- for these pathologies to develop in the brain, and so we needed to look at exposures that covered that extended period," Shaffer said.And, because of long-running efforts by many UW faculty and others to build detailed databases of air pollution in our region, "we had the ability to estimate exposures for 40 years in this region. That is unprecedented in this research area and a unique aspect of our study."In addition to extensive air pollution and dementia data for the region, other study strengths included lengthy address histories and high-quality procedures for dementia diagnoses for the ACT Study participants."Having reliable address histories lets us obtain more precise air pollution estimates for study participants," said senior author Lianne Sheppard, a UW professor of environmental and occupational health sciences and of biostatistics."These high-quality exposures combined with ACT's regular participant follow-up and standardized diagnostic procedures contribute to this study's potential policy impact."--IANSvg/dpb
New York, July 28 (IANS) The number of people with dementia will nearly triple to more than 152 million by 2050, researchers estimate, based on anticipated trends in smoking, high body mass index and high blood sugar.The study, led by researchers at the University of Washington School of Medicine, forecast dementia prevalence attributable to smoking, high body mass index (BMI) and high fasting plasma glucose, using the expected relationship between these risk factors and dementia prevalence.They found an increase of 6.8 million dementia cases globally between 2019 and 2050 due specifically to expected changes in these risk factors.Separately and conversely, the researchers found that expected changes in education levels will lead to a decline in dementia prevalence of 6.2 million individuals globally between 2019 and 2050.The data was presented at the Alzheimer's Association International Conference, (AAIC) 2021 in Denver."Improvements in lifestyle in adults in developed countries and other places -- including increasing access to education and greater attention to heart health issues -- have reduced incidence in recent years, but total numbers with dementia are still going up because of the ageing of the population," Alzheimer's Association chief science officer Maria C. Carrillo said."In addition, obesity, diabetes and sedentary lifestyles in younger people are rising quickly, and these are risk factors for dementia," she added.To forecast global dementia prevalence, Emma Nichols, a researcher with the Institute for Health Metrics and Evaluation at the varsity's School of Medicine, and colleagues leveraged data from 1999 to 2019 from the Global Burden of Disease study.They showed that each year, an estimated 10 in every 100,000 individuals develop dementia with early onset (prior to age 65). This corresponds to 350,000 new cases of early onset dementia per year, globally.Dementia would increase from an estimated 57.4 (50.4 to 65.1) million cases globally in 2019 to an estimated 152.8 (130.8 to 175.6) million cases in 2050.The highest increase in prevalence is projected to be in eastern sub-Saharan Africa, North Africa, and the Middle East."Without effective treatments to stop, slow or prevent Alzheimer's and all dementia, this number will grow beyond 2050 and continue to impact individuals, caregivers, health systems and governments globally," Carrillo said."In addition to therapeutics, it's critical to uncover culturally-tailored interventions that reduce dementia risk through lifestyle factors like education, diet and exercise," she noted.--IANSrvt/vd
New York, Reading, writing letters and playing card games or puzzles even in advanced old age may help delay the onset of Alzheimer's dementia by up to five years.
The research, published in the online issue of journal journal Neurology, looked at 1,978 people with an average age of 80 who did not have dementia at the start of the study and were followed for seven years.
People with the highest levels of activity, on average, developed dementia at age 94. The people with the lowest cognitive activity, on average, developed dementia at age 89, a difference of five years.
"The good news is that it's never too late to start doing the kinds of inexpensive, accessible activities we looked at in our study," said Robert S. Wilson, from Rush University Medical Center in Chicago.
"Our findings suggest it may be beneficial to start doing these things, even in your 80s, to delay the onset of Alzheimer's dementia," Wilson added.
To test the idea that low cognitive activity may be an early sign of dementia, not the other way around, researchers also looked at the brains of 695 people who died during the study.
Brain tissue was examined for markers of Alzheimer's like amyloid and tau protein deposits, but researchers found no association between how active they were cognitively and markers of Alzheimer's disease and related disorders in their brains.
"It is important to note, after we accounted for late life level of cognitive activity, neither education nor early life cognitive activity were associated with the age at which a person developed Alzheimer's dementia. Our research suggests that the link between cognitive activity and the age at which a person developed dementia is mainly driven by the activities you do later in life," Wilson noted. (IANS)
New York, Older adults who struggle to fall asleep and experience frequent night awakenings are at high risk for developing dementia or dying early from any cause, a new study suggests.
The findings, published in the Journal of Sleep Research, indicated that people who reported routinely experiencing difficulty falling asleep had a 49 per cent increased risk of dementia.
And those who often woke in the night and had difficulty falling back asleep had a 39 per cent increased risk of dementia, reports CNN.
"We found a strong association between frequent difficulty falling asleep and nighttime awakenings and dementia and early death from any cause, even after we controlled for things like depression, sex, income, education and chronic conditions," said researcher Rebecca Robbins from Harvard Medical School.
For the study, the team analysed data collected by the National Health and Aging Trends Study (NHATS), which conducts annual in-person interviews with a nationally representative sample of 6,376 Medicare beneficiaries.
Data from between 2011 and 2018 were examined for the new study, with a focus on people in the highest risk category -- those who said they had sleep issues "most nights or almost every night".
Self-reported sleep difficulties by participants in the study were then compared to each participant's medical records.
The study found that people who had trouble falling asleep most nights had about a 44 per cent increased risk of early death from any cause.
Those who said they often woke in the night and struggled to return to sleep had a somewhat higher risk -- a 56 per cent increased risk of early death from any cause.
"These results contribute to existing knowledge that sleep plays a very important role, every night, for reducing our long term risk for neural cognitive decline and all-cause mortality," said Robbins.(Agency)
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Toronto, May 16 (IANS) Dementia and Alzheimer's disease were the most common medical conditions linked with all Covid-19 deaths reported in 2020 in Canada, the media reported.The brain disorders were the most common comorbidity among women (41 per cent), while among men, it was the second most common comorbidity at 31 per cent, CTVnews.ca reported citing a new report from Statistics Canada."Of all Covid-19 deaths in 2020, dementia or Alzheimer's was reported on 36 per cent of Covid-19 death certificates," the report said.Further, of the nearly 15,300 people who died of the virus between March and December 2020, 65 per cent had two or more comorbidities and 46 per cent had three or more comorbidities, according to the report."These results, along with the specific conditions listed on the death certificate, highlight some of the populations in Canada most vulnerable to severe outcomes of Covid-19. Although individuals had pre-existing conditions, it does not imply that they were at risk of dying if there had been no Covid-19 infection," the report said.The other most common comorbidities linked to Covid-19 death included pre-existing cardiovascular and respiratory conditions, including hypertension (15 per cent), heart diseases (14 per cent) and chronic lower respiratory diseases (11 per cent).Diabetes, Parkinson's, and obesity was the common comorbidity associated with Covid deaths in the younger population.Diabetes was a common pre-existing condition among 15 per cent of Covid deaths among the 45-to-84 age group and 9 per cent among those below 45.Nervous system disorders, such as Parkinson's or amyotrophic lateral sclerosis diseases (excluding Alzheimer's) was most common at 13 per cent among those who died of the virus in the 45-to-64 age group and 12 per cent among those younger than 45.There were fewer than 100 deaths due to Covid in people below 45 years in 2020. But, among those who died, obesity was the most commonly observed comorbidity, the report said.--IANSrvt/vd