Approximately 5.5 million people in the United States and 47 million people worldwide are currently affected by AD [2,3]. It is expected that by 2050, nearly a million new cases per year may develop [4].
Symptoms: What are the symptoms of ADMemory loss is usually the first sign of AD which is different than normal memory problems. Unlike in other cases where one can forget something for the time being but can recollect later, AD person's loss of memory is irreversible.Followings are the symptoms associated with mild, moderate, and severe AD. Symptoms vary as the disease progresses (Figure 1). Mild AD: Usually, a person with mild AD avoids new and unfamiliar situations; has trouble learning and remembering new information, speaks more slowly than in the past; makes wrong decisions; may have mood swings and become depressed, grouchy, or restlessness [5].