Patients-care header
Header Image
Patients-Care Facebook Profile   Patients-Care Twitter Profile   Patients-Care YOutube profile   Patients-Care Feed
  Quick List
Javascript DHTML Tree Menu Powered by dhtml-menu-builder.com
Home > Alzheimer's Disease-Risk Factors

Alzheimer's Disease

Alzheimers Brain
Risk Factors of Alzheimer's disease
The biggest risk factor for Alzheimer's disease is increased age. The likelihood of developing Alzheimer's disease doubles every 5.5 years from 65 to 85 years of age. Whereas only 1%-2% of individuals 70 years of age have Alzheimer's disease, in some studies around 40% of individuals 85 years of age have Alzheimer's disease. Nonetheless, at least half of people who live past the 95 years of age do not have Alzheimer's disease.

Common forms of certain genes increase the risk of developing Alzheimer's disease, but do not invariably cause Alzheimer's disease. The best-studied "risk" gene is the one that encodes apolipoprotein E (apoE). The apoE gene has three different forms (alleles) -- apoE2, apoE3, and apoE4. The apoE4 form of the gene has been associated with increased risk of Alzheimer's disease in most (but not all) populations studied. The frequency of the apoE4 version of the gene in the general population varies, but is always less than 30% and frequently 8%-15%. Persons with one copy of the E4 gene usually have about a two to three fold increased risk of developing Alzheimer's disease. Persons with two copies of the E4 gene (usually around 1% of the population) have about a nine-fold increase in risk. Nonetheless, even persons with two copies of the E4 gene don't always get Alzheimer's disease. At least one copy of the E4 gene is found in 40% of patients with sporadic or late-onset Alzheimer's disease.

This means that in majority of patients with Alzheimer's disease, no genetic risk factor has yet been found. Most experts do not recommend that adult children of patients with Alzheimer's disease should have genetic testing for the apoE4 gene since there is no treatment for Alzheimer's disease. When medical treatments that prevent or decrease the risk of developing Alzheimer's disease become available, genetic testing may be recommended for adult children of patients with Alzheimer's disease so that they may be treated.
What is Alzheimers disease

Intelligent Artificial Mind

Experts find key to control obesity

Risk? Mobiles may help ward off Alzheimer's

Kicking the smoking raises diabetes risk by 70%: Study
Your Visit No. 0
Current Visitor. 0000000
Patients-Care Logo Patients-Care Feedback     Bookmark us
Useful Links Brand Information  |   Drug Information   |   Brand Interaction   |   Drug Interaction
Health Tools Child Growth   |   BMI Calculator   |   CHD Risk   |   Water Necessity
Doctors Free Doctors Homepage   |   Doctors List   |   Handouts
Traditional Treatment Yoga   |   Alternative Therapies   |   Diet Therapy   |   Chiropractic Therapy  |   Aroma Therapy
About Patients-Care Contact us   |   Feedback   |   Terms Of use   |   Privacy
Community Sign In   |   Join Now   |   Sitemap   |   Link Exchange
   
CompuRx Infotech Pvt. Ltd. | Copyright © All Right Reserved 2009 Use of this site constitutes acceptance of patients-care terms of services and privacy policy.The material on this site is for informational purposes only, and is not a substitute for medical advice,diagnosis or treatment provided by a qualified health care provider.