In general, cholinesterase inhibitors have shown some benefit for patients with vascular dementia, those with mixed Alzheimer's and vascular dementia, patients with the disease known as "dementia with Lewy bodies, " and dementia from Parkinson's disease.
CNN: Better understanding of dementia leading to more effective therapies
The proportion of men caring for relatives with Alzheimer's or dementia, for example, doubled -- from 19% to 40% -- from 1996 to 2009.
Originally developed by Microsoft Research in Cambridge, England, the technology has been licensed to Oxford-based Vicon, which will produce a version for Alzheimer's and dementia researchers by the year's end and a consumer version in 2010.
Studies have shown that staying mentally and physically active can slow or even prevent Alzheimer's-related dementia.
All three companies are also looking at whether their drugs work in a condition called mild cognitive impairment--mild memory loss that may or may not be a precursor to Alzheimer's or other dementia.
People who have both Alzheimer's and vascular disease -- a condition called mixed dementia -- have a more rapid progression of Alzheimer's disease, Cole said.
CNN: Mediterranean diet may help prevent dementia, study says
Alzheimer's is a form of dementia that progressively robs patients of their memories and affects their thinking and behavior.
In addition to being heart-healthy, research suggests the olive oil-rich Mediterranean diet may also protect against age-related dementia, Alzheimer's disease and certain types of cancer.
Ginkgo is a top-selling herb and has been hailed by some as a memory-booster, but the new University of Pittsburgh study found it didn't help prevent Alzheimer's or other forms of dementia in more than 3, 000 elderly study subjects.
In a study published last year in the journal Cortex, Dr. Rankin and her colleagues studied the ability to detect sarcasm in 102 patients who had been diagnosed with four progressive diseases that lead to memory loss: frontotemporal dementia, Alzheimer's disease, progressive supranuclear palsy and vascular-cognitive impairment.
Right now, only two of every three elderly people with signs of dementia actually have Alzheimer's.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
Memantine is also especially useful in the treatment of patients with Alzheimer's disease and patients with vascular dementia.
CNN: Better understanding of dementia leading to more effective therapies
Known as brain infarcts, they're involved in vascular dementia, the second most common form of dementia, after Alzheimer's disease.
CNN: Mediterranean diet may help prevent dementia, study says
Dr. Barbara Messinger-Rapport, geriatrics chief at the Cleveland Clinic, noted that half of people 85 and older in developed countries have some dementia, usually Alzheimer's.
It will focus on conditions including attention deficit hyperactivity disorder, autism, schizophrenia, bipolar disorder, depression, post-traumatic stress disorder, as well as Alzheimer's disease and other forms of dementia.
There are several types of dementia other than Alzheimer's disease.
CNN: Better understanding of dementia leading to more effective therapies
Researchers at Rush Medical University found that mentally challenging activities, such as reading and playing chess, may have a protective effect on the brain and help lower risk of dementia associated with Alzheimer's disease.
More than 5 million Americans are living with Alzheimer's, according to the U.S. Alzheimer's Association, and there are no good treatments to prevent the dementia and memory loss caused by the disease.
Comedians Jo Brand and Meera Syal have become two of England's first 'dementia friends', in an initiative launched by the Alzheimer's Society.
BBC: Comedians Meera Syal and Jo Brand are 'dementia friends'
Researchers have found that patients with Alzheimer's disease and several other types of dementia have lower levels of this acetylcholine.
CNN: Better understanding of dementia leading to more effective therapies
But if a patient has two copies of apo E-4, the odds that the dementia is due to Alzheimer's jumps to 94% from 66%, the Duke scientists say.
WSJ: A Gene Gives a Hint Of How Long a Person Might Hope to Live
Research by London School of Economics and King's College London commissioned by the Alzheimer's Society found Cardiff and Swansea have the highest number of people with dementia, while Ceredigion and Powys will see some of the biggest growth in the condition.
More than 15 million Americans are providing unpaid care for a person with dementia, according to the Alzheimer's Association.
The researchers had said that even the four Alzheimer's cases might turn out to be Lewy body dementia as the disease progressed.
According to the Alzheimer's Society, there are 37, 000 people with dementia in Wales.
Those who were depressed when first examined almost doubled their risk for dementia and also increased their risk for Alzheimer's disease.
The Alzheimer's Society said of the 13, 500 people with dementia in Devon, the option of housing with on-site care and support would be welcomed by some.
One good example: the 330, 000 Americans who are confined to bed or unable to talk as a result of severe dementia, such as that caused by Alzheimer's disease.
When she created a strain of mice with the presenilin genes missing in their brains, the mice developed dementia and brain cell death just like Alzheimer's sufferers, but the mice had no amyloid deposits.
Robb's 92-year-old grandmother is one of an estimated 36 million people worldwide with dementia, according to 2010 data from Alzheimer's Disease International, and Robb is one of about 65.7 million people in the United States taking care of relatives with various conditions, including dementia.
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