Alzheimer's disease itself cannot be prevented, but there are steps people can take in order to reduce memory loss and dementia when it comes to the development of the disease. Also, some scientists speculate that even though it cannot be completely prevented, there are some things people can do in order to reduce their risk of developing the disease. There are many different medications and vitamin supplements that can be used to relieve and manage some of the symptoms of AD. Also, other medications may help control behavioral symptoms such as sleeplessness, agitation, wandering, anxiety, and depression. AD is a progressive disease, but its course can vary from 5 to 20 years. The most common cause of death in AD patients is infection.

Another study suggests that high homocysteine levels are linked with mental declines associated with Alzheimer's disease in elderly people. High levels of a substance in the blood called homocysteine tops the list of potentially new risk factors for heart disease, stroke, and now dementia. Elevated levels of homocysteine is an indication of inadequate folate and vitamin B-12 in the diet. High homocysteine levels can be treated very easily with vitamins, including folate, niacin, and B-12. Though nutritional deficiencies can be the cause, some medications like the seizure drug Dilantin can elevate homocysteine levels in the blood. Kidney disease, alcohol use, and too little physical activity can also elevate homocysteine.