Dementia is a generic term for a range of neurological disorders affecting millions of Americans every year. As the disease is more common in older age and the aging population is expected to increase in most countries, dementia has been predicted to increase exponentially. However, new research reports a decline in the prevalence of dementia in the United States.

Dementia is an umbrella term used to describe a variety of conditions and symptoms that occur when nerve cells die or no longer function properly. The malfunctioning of these neurons leads to memory loss, impaired reasoning and cognition, and sometimes personality changes.

Patients are diagnosed with the disorder when such impairment becomes severe and interferes with a person’s ability to carry out daily tasks.Alzheimer’s disease is the most common form of dementia, accounting for 60-80 percent of cases.

Ultimately, Alzheimer’s disease is fatal, ranking as the sixth leading cause of death in the U.S.

In the U.S., one study noted a 20 percent decrease in dementia per decade between 1977-2008, but only in adults with at least a high school education.

to read complete article click link below:

http://www.medicalnewstoday.com/articles/314250.php