The relationship between low mood and Alzheimer's disease Alzheimer's disease
A neurological disease that affects memory and behaviour. It is characterized by beta-amyloid plaques and neurofibrillary tangles in the brain. There is no known cause but genetics and lifestyle are thought to play a role. is complex. Low mood reflects a low level of the brain chemical known as serotonin. This can decline on its own, in depression Depression
A disorder where a person experiences a constant state of sadness and low mood which interferes with their daily activity.. Low levels - and relatively low levels (relative to levels of other brain chemicals Brain chemicals
Chemicals released by the neurons in the brain in order to communicate.) - are seen in people with mild Alzheimer's disease, and, in many people, at all stages Stages
Course of disease progression defined by levels or periods of severity: early, mild, moderate, moderately severe, severe of vascular Vascular
Relating to blood vessels that carry blood throughout the body. dementia.