Overview on Alzheimer’s Disease

Abstract

The world wide spread dementia of Alzeheimer disease is estimated to be as high as 24 million and it is hypothesized to be double every 20 years through 2040 resulting to a costly risk of the disease. Alzehimer disease is the main cause of dementia and is manifested by a gradual loss of cognitive function which is initially begin with deterioration of memory. Before death, the patient is fully dependent on their care givers. The main mechanism underlying the neuropath logical changes in Alzheimer patient are remaining unknown. But mainly they may be affected by both environmental and genetic factors. The hall mark pathology of Alzheimer disease are mainly accompanied by the presence of reactive microgliosis and the loss of neurons, white matter and synapses3.