Alzheimer's & Dementia

The word dementia means deprived of mind. It is a catchall term that covers memory loss, confusion, changes in personality, a decline in thinking skills, and dwindling ability to perform everyday activities.

There are many types of dementia. Alzheimer's disease is the most common. Half or more of people with dementia have Alzheimer's disease. It is caused by the accumulation of tangles and clumps of protein in and around brain cells. These tangles and clumps make it difficult for brain cells to communicate with one another, and can eventually kill them.

Vascular dementia, the second most common type, develops when cholesterol-clogged arteries can't deliver enough oxygen-rich blood to the brain. Sometimes small blockages completely cut off the blood supply to a part of the brain, causing nearby brain cells to die.

The terms dementia and Alzheimer's are often used interchangeably. In part, that's because it is very hard to tell them apart. Usually, a specific type of dementia can only be diagnosed by an autopsy after someone has died.

Dementia affects areas of the brain involved in learning and memory. So a common symptom is difficulty in recalling new information. Memory loss disrupts daily life. An individual with dementia may get lost in a once-familiar neighborhood. He or she may have increasing trouble making decisions, solving problems, or making good judgments. Mood and personality may change. A person with dementia can become more irritable or hostile, or lose interest in almost everything.

Once dementia has developed, it is usually hard to reverse. The goal of treatment is to manage symptoms and slow its progression. Some medications can help slow the intellectual decline in mild to moderate dementia. Psychotherapy techniques like reality orientation and memory retraining can also help people with this condition.

A small percentage of people with dementia develop the condition because of medical issues such as an underactive thyroid gland, an infection, not getting enough vitamin B12, medication side effects, or drinking too much alcohol. In these cases, treating the underlying cause can reverse the dementia.

Alzheimer's & Dementia Articles

Testing for dementia

There is no cure for dementia, and people cannot substantially reverse its effects, but there are ways to possibly slow its progression. But first, people need to know if they may have a memory disorder. Testing to confirm Alzheimer’s or other forms of dementia is a multilayered process that includes several types of neuropsychological evaluations and biomarker testing. (Locked) More »

Blood test may find early signs of Alzheimer's

A new study found that a simple blood test can detect beta-amyloid protein buildup—one of the possible causes of Alzheimer’s disease—years before symptoms appear. The test is expected to be available to the public in a few years. More »

Study links certain medications to a higher risk of dementia

In a recent study, researchers found a potential link between anticholinergic medications, used to treat a wide variety of conditions, including allergies, depression, gastrointestinal problems, Parkinson’s disease, incontinence and overactive bladder, and a higher risk of dementia. But experts say study limitations may cloud the results. (Locked) More »

How much sleep do we really need?

Some people need less sleep while others need more, but in general trying to get the recommended amount (seven to nine hours a night for adults, seven to eight for seniors) is probably a prudent choice. (Locked) More »

Poor sense of smell may predict risk of death in older adults

Shorter term studies have suggested a link between loss of smell among older adults and risk of death. A new report confirms that the association between loss of smell and earlier death persists over more than a decade and identifies the leading causes: cardiovascular disease, Alzheimer’s and Parkinson’s. More »