Abstract : The study has clearly provided the impact of dementia on the elderly individuals and also its prevention process. Due to biological aging, most of the individuals have suffered from the deterioration of cognitive function among individuals from all over the world. Dementia can impact negatively on the brain as a primary and secondary aspects. Alzheimer’s can be considered as one of the most common form of dementia and almost 60% to 70% of individuals are already subjected to the disease dementia. The study help others to put a insight on the disability rate of elders due to dementia and it can be considered as the seventh leading cause for the death of people. Dementia is a wide variety of disease that includes Alzheimer’s, Parkinson’s disease, depression, anxiety and some other cognitive impairment. There are mainly two types of protein that help in the formation of dementia, those proteins are Tau and amyloid. The improper build-up of proteins within the brain can cause tangles within the brain, which may lead to the formation of abnormalities. Some of the major medicines for dementia are mainly known as Acetylcholinesterase inhibitors. In order to treat Alzheimer’s, healthcare practitioners have been suggesting Donepezil and galantamine. Sometimes, individuals can suffer from depression and anxiety, therefore healthcare practitioners provide antidepressants to reduce the impact of those issues. Apart from that, sometimes non pharmacological approaches play an essential role in minimising the effect of dementia.

Keywords : Alzheimer’s, Amyloids, communication therapy, Dementia, Donepezil, Tau.