Memory loss that disrupts everyday life is not a normal part of aging. It is a symptom of dementia, a gradual and progressive decline in memory, thinking and reasoning skills. The most common form of dementia is Alzheimer’s disease, a disorder that results in the loss of brain cells.

The Alzheimer’s Association, the world leader in Alzheimer research and support, has developed a checklist of common symptoms to help recognize the warning signs of Alzheimer’s disease.

1. Memory loss.

Forgetting...