Alzheimer's Disease Myths, from the Alzheimer's Association

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Alzheimer's Disease Myths

Myth 1: Memory loss is a natural part of aging.

Reality: In the past people believed memory loss was a normal part of aging, often regarding even Alzheimer’s as natural age-related decline. Experts now recognize severe memory loss as a symptom of serious illness.

Whether memory naturally declines to some extent remains an open question. Many people feel that their memory becomes less sharp as they grow older, but determining whether there is any scientific basis for this belief is a research challenge still being addressed.


Myth 2: Alzheimer’s disease is not fatal.

Reality: Alzheimer's disease has no survivors. It destroys brain cells and causes memory changes, erratic behaviors and loss of body functions. It slowly and painfully takes away a person's identity, ability to connect with others, think, eat, talk, walk and find his or her way home.


Myth 3: Only older people can get Alzheimer's

Reality: Alzheimer's can strike people in their 30s, 40s and 50s. Of the estimated 5 million Americans living with Alzheimer's disease, some 500,000 people under age 65 have Alzheimer's or a related dementia.


Myth 4: Drinking out of aluminum cans or cooking in aluminum pots and pans can lead to Alzheimer’s disease.

Reality: During the 1960s and 1970s, aluminum emerged as a possible suspect in Alzheimer’s. This suspicion led to concern about exposure to aluminum through everyday sources such as pots and pans, beverage cans, antacids and antiperspirants. Since then, studies have failed to confirm any role for aluminum in causing Alzheimer’s. Experts today focus on other areas of research, and few believe that everyday sources of aluminum pose any threat.


Myth 5: Aspartame causes memory loss.

Reality: This artificial sweetener, marketed under such brand names as Nutrasweet and Equal, was approved by the U.S. Food and Drug Administration (FDA) for use in all foods and beverages in 1996. Since approval, concerns about aspartame's health effects have been raised.

According to the FDA, as of May 2006, the agency had not been presented with any scientific evidence that would lead to change its conclusions on the safety of aspartame for most people. The agency says its conclusions are based on more than 100 laboratory and clinical studies. Read the May 2006 FDA statement about aspartame:

http://www.fda.gov/fdac/features/2006/406_sweeteners.html


Myth 6: Flu shots increase risk of Alzheimer’s disease

Reality: A theory linking flu shots to a greatly increased risk of Alzheimer’s disease has been proposed by a U.S. doctor whose license was suspended by the South Carolina Board of Medical Examiners. Several mainstream studies link flu shots and other vaccinations to a reduced risk of Alzheimer's disease and overall better health.

* A Nov. 27, 2001, Canadian Medical Journal report suggests older adults who were vaccinated against diphtheria or tetanus, polio, and influenza seemed to have a lower risk of developing Alzheimer’s disease than those not receiving these vaccinations. The full text of this report is posted on the journal’s Web site:

http://www.cmaj.ca/cgi/content/full/165/11/1495?eaf

* A report in the Nov. 3, 2004, JAMA found that annual flu shots for older adults were associated with a reduced risk of death from all causes. The abstract of that report is posted on the journal's web site:

http://jama.ama-assn.org/cgi/content/abstract/292/17/2089


Myth 7: Silver dental fillings increase risk of Alzheimer's disease

Reality: According to the best available scientific evidence, there is no relationship between silver dental fillings and Alzheimer's. The concern that there could be a link arose because "silver" fillings are made of an amalgam (mixture) that typically contains about 50 percent mercury, 35 percent silver and 15 percent tin. Mercury is a heavy metal that, in certain forms, is know to be toxic to the brain and other organs.

Many scientists consider the studies below compelling evidence that dental amalgam is not a major risk factor for Alzheimer's. Public health agencies, including the FDA, the U.S. Public Health Service and the World Health Organization, endorse the continued use of amalgam as safe, strong, inexpensive material for dental restorations.

* March 1991, the Dental Devices Panel of the FDA concluded there was no current evidence that amalgam poses any danger.

* National Institutes of Health (NIH) in 1991 funded a study at the University of Kentucky to investigate the relationship between amalgam fillings and Alzheimer's. Analysis by University statisticians revealed no significant association between silver fillings and Alzheimer's. The abstract for this study is posted on the Journal of the American Dental Association Web site:

http://jada.ada.org/cgi/content/abstract/130/2/191

* October 30, 2003, a New England Journal of Medicine article concluded that current evidence shows no connection between mercury-containing dental fillings and Alzheimer's or other neurological diseases. The abstract for this study is posted on the New England Journal of Medicine Web site.

http://content.nejm.org/cgi/content/short/349/18/1731


Myth 8: There are treatments available to stop the progression of Alzheimer's disease

Reality: At this time, there is no treatment to cure, delay or stop the progression of Alzheimer's disease. FDA-approved drugs temporarily slow worsening of symptoms for about 6 to 12 months, on average, for about half of the individuals who take them.