Alzheimer's starts gradually in most cases. Initially, a person may forget recent events or have problems doing everyday things. If a loved one starts to show signs of impaired mental functioning or dementia, it's important to seek medical help. Remember too, that while Alzheimer's is the leading cause of dementia in seniors, other conditions can result in similar symptoms. For example, the American Academy of Neurology says a variety of brain disorders can lead to impaired thinking.
Depression can also cause symptoms of dementia in older people.
A diagnosis of Alzheimer's is usually made by ruling out these other causes first, then following up with lab or psychiatric exams. Although the disease has no cure, there is a great deal of research being conducted. According to the Alzheimer's Association, potential factors being explored include genetic factors, the role of estrogen, inflammation, and oxidation. Scientists are also looking into anti-inflammatories and antioxidants to see if they can slow the progression of the disease. The Alzheimer's Association says scientists are also beginning to learn more about the plaques and tangles in the brains of people with Alzheimer s disease.