Individuals with the disease may exhibit mu ltiple symptoms that change over several years.In addition, everyone may not experience the condition in the same manner, making symptoms challenging to distinguish from healthy ageing and other disorders such as depression. Nevertheless, AD can be generalised into three distinct stages based on symptoms; the preclinical phase, mild cognitive purchase Dimethyl%20sulfoxide impairment and dementia due to AD.Approximately of all AD cases are LOAD, while are EOAD.No single genetic mutation has been identified to account for all AD cases.Individuals whose parents or siblings have AD have an increased likelihood to develop the disease and are at even more risk if they have more than one firstdegree relative with AD, such as smoking, obesity, diabetes and hypertension, have also been shown to increase the risk of AD.Although the direct connection between the two diseases remains unclear, the general hypothesis suggests a healthy brain s demand for energy supply is hampered by CVD, resulting in decreased nutrient and oxygenrich blood reaching the brain for normal functionality, causing nerve cell death.Individuals who have more years in education, a mentally stimulating occupation or engage in social activities have been suggested to build cognitive reserves and reduce the risk of AD. These cognitive reserves are the brains ability to create flexible cognitive neuronal networks, which have been suggested to optimise normal cognition and compensate for brain changes such as accumulation of A and tau, enabling an individual to continue to carry out cognitive tasks is a blow, jolt or penetration of the skull caused by a foreign object, which disrupts normal brain function and can result in a loss of consciousness and posttraumatic amnesia.The e variant is the most common, followed by the e and then the e variant. An individual inherits one APOE gene from each parent and therefore, can have any one of the six different allele combinations. Individuals who inherit one copy of the e have a fold increase in developing AD, while inheriting two copies of the e form increases the risk to fold when compared to two copies of the e form.Approximately of the general population and up to of AD patients have the e variant. In contrast, inheriting the e variant may decrease the risk of developing AD when compared with the e variant. An additional nineteen Targetmol’s Dimethyl%20sulfoxide variants have been identified to increase the risk of AD, but collectively only account of all cases.These genes are ABCA, AKAP, BIN, CASS, CDAP, CD, CLU, EPHA, FERMT, HLADRBDRB, INPPD, MEFC, MSAAMSAE, PICALM, PLD, PTKB, SORL, TREM and UNCC.Plaques and tangles exist in all older adults; however, there is an abnormal accumulation in individuals with AD, which has been suggested to be a result of an imbalance in the production and removal of these proteins.The APP is a singlepass transmembrane protein that is highly expressed in brain neurons.The exact function of APP is unknown; however, studies suggest APP modulates cell growth, promotes neuronal survival, neurite outgrowth and is involved in general cell health. In normal processing, the APP is sequentially cleaved into several peptides by enzyme activities.