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Excusme I want from you make a summary to this text:

Alzheimer’s disease is the most common type of dementia and it affects memory, thinking, behavior and emotion. It is important to diagnose it early so that the person and caregivers can prepare to cope with it.
Here are some facts about the disease:
What is it?: Alzheimer’s disease is an irreversible, progressive brain disease that slowly destroys memory and thinking skills, and eventually even the ability to carry out the simplest tasks. In most people with Alzheimer’s, symptoms first appear after age 60.
Symptoms: Loss of memory, difficulty in finding the right words or understanding what people are saying, difficulty in performing previously routine tasks, personality and mood changes. By the final stage, the brain would have shrunk significantly. People with severe Alzheimer’s cannot communicate and are completely dependent on others for their care. Near the end, the person may be in bed most or all of the time as the body shuts down.