Dementia is a general term for a decline in mental ability severe enough to interfere with daily life. Memory loss is an example. Alzheimer's is the most common type of dementia.

Dementia is not a specific disease. It's an overall term that describes a wide range of symptoms associated with a decline in memory or other thinking skills severe enough to reduce a person's ability to perform everyday activities.

Lifestyle choices can protect your brain

While symptoms of dementia can vary greatly, at least two of the following core mental functions must be significantly impaired to be considered dementia:

The six pillars of a brain-healthy lifestyle are:

Study finds that cognitive activity in old age may delay the onset of dementia by 5 years

4 Lifestyle Choices That Impact Brain Health