Latest Worldwide Patterns in Dementia Prevalence and Occurrence, and Dementia Survival
Received: 05-Nov-2020 / Accepted Date: 19-Nov-2020 / Published Date: 26-Nov-2020
Abstract
Vascular dementia is a loss in cognitive abilities induced by circumstances that obstruct or decrease the supply of blood to different brain areas, depriving them of oxygen and nutrients. Inadequate blood flow can harm and ultimately destroy cells anywhere in the But the brain is extremely vulnerable to the body. Changes in thought skills in vascular dementia often occur unexpectedly after a stroke, which blocks the brain's main blood vessels. Thinking issues may also start as mild changes that progressively escalate as a result of many minor strokes or another disorder affecting smaller blood vessels, resulting in widespread damage. The word "Vascular Cognitive Impairment" (VCI) is preferred by an increasing number of experts to "vascular dementia" because they believe it better reflects the idea that changes in vascular thought can vary from mild to extreme. Changes in the vascular brain also coexist with changes associated with other dementia forms, including Alzheimer's disease and Lewy body dementia. Various studies have shown that vascular changes and other abnormalities of the brain can interact in ways that increase the risk of diagnosing dementia. To receive updates on Alzheimer's and dementia treatment and studies.
Keywords: Dementia; Neuron; Parkinson’s Disease; Alzimer Disease
Keywords
Dementia; Neuron; Parkinson’s disease; Alzheimer disease
Description
Present estimates of the magnitude of the coming outbreak of dementia suggest that the age-and sex-specific incidence of dementia will not differ with time, and that the expected changes are motivated by demographic ageing alone (increasing the number of elderly at risk). The reason for this claim is questionable, and secular patterns are perfectly plausible (that is, incremental declines or changes in prevalence over long-term periods [1-3]. Nearly all existing estimates of the size of the coming dementia crisis, including those reported by Alzheimer's Disease International (ADI), suggest that the age and sexspecific prevalence of dementia will not change with time, and that the expected changes will be induced by demographic ageing alone (increasing the number of elderly people at risk) [1-5].
The reason for this claim is questionable, and secular patterns are perfectly plausible (that is, incremental declines or changes in prevalence over long-term periods [6].
Present estimates of the size of the coming dementia crisis suggest that the incidence of dementia in terms of age and sex will not change with time, and that demographic ageing alone (increasing the number of elderly people at risk) causes the expected rises in dementia prevalence. The reason for this claim is questionable, and secular patterns are perfectly plausible (that is, incremental declines or changes in prevalence over long-term periods).
The latest evidence available shows that it is doubtful that the agespecific incidence of dementia is to change significantly in coming years, even if the incidence of dementia falls in response to secular improvements in public health in high-income countries. Given the minimal evidence available on secular patterns and the variability of the research results, this inference remains tentative. Prudent policymakers should exercise due caution, being swayed neither by individual studies nor by Pollyannaish statements, such as expressed in a recent Lancet editorial [7].
Conclusion
Under currently foreseeable scenarios, they should be considered as constituting the mid-range of expectations. There is an immediate need for more study into national and regional disease incidence patterns related to changes in exposure levels to established risk factors.
References
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- Alzheimer’s Disease International. Policy brief for G8 heads of government: the global impact of dementia 2013–2050. London: Alzheimer’s Disease International; (2013).
- Prince M, Wimo AGM, Ali GC, Wu YT (2015) World Alzheimer Report 2015: The global impact of dementia: An analysis of prevalence, incidence, cost and trends. London: Alzheimer’s Disease International.
- Prince M, Bryce R, Albanese E, Wimo A (2013) The global prevalence of dementia: a systematic review and metaanalysis. Alzheimers Dement 9:63–75.
- Ferri CP, Prince M, Brayne C, Brodaty H. (2005) Global prevalence of dementia: A Delphi consensus study. Lancet. 366:2112–7.
- Langa KM (2015) Is the risk of Alzheimer’s disease and dementia declining? Alzheimers Res Ther 7:34.
- A global assessment of dementia, now and in the future (2015) Lancet. 386:93
Citation: Singh MP (2020) Latest Worldwide Patterns in Dementia Prevalence and Occurrence, and Dementia Survival. J Clin Exp Neuroimmunol 5:120
Copyright: © 2020 Singh MP. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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