Cognitive function and Alzheimer: Future direction to prevent the risk

Elder people are the assets of the nation and can ensure peaceful and healthy life. Due to societal and financial difficulties, elders are not able to afford medical facilities. Healthcare is still an evolving service in most of the developing and under developing countries. Healthy nation can contribute more wealth to the society. Life span of people has increased with technological support and statistic reveals that by 2030 the population of elderly people (above 65years) will become double. Most of the researches on types of cancer, heart diseases, diabetes, and arthritis and so on. Mental related diseases also play a vital role nowadays. Due to life style, chronic diseases (Blood pressure, diabetes), and depression leads to mental illness. It has huge personal, medical, financial and societal impact. This paper analyses the types of mental illness, its causes, preventive and diagnosis methods. Also analyses the importance of machine learning, image processing IoT and expert systems in this field. The proposed analysis can improve the understanding and importance of cognitive impairment.