Neurodegeneration, the progressive death of brain cells, and the progressive loss of structure or the function of neurons, including the Death of neurons, is the root cause of dementia. Several neurodegenerative diseases cause dementia, with the most common being Alzheimer`s disease (AD) followed by Parkinson’s-Lewy body disease (PD-LBD). Importantly, neurodegenerative brain changes are also frequently associated with vascular disease of the brain (vascular cognitive impairment [VCI]), making mixed disease common in the aging population. These diseases are been considered as incurable. But in this recent Era nothing is been considered as an incurable or an impossible one by research. So, as the research approaches many similarities that relate these diseases to one another at a cellular level, and these similarities offers hope for therapeutic advances for the treatment of these diseases.
According to the report of the World Health Organization (WHO) on neurology shows that neurological disorders, ranging from epilepsy to Alzheimer’s disease, from stroke to headache, affect up to one billion people worldwide. An estimated 6.8 million people die every year as a result of neurological disorders. There are more than 600 diseases of the nervous system.