Memory, the ability to normally recall the facts and events of our lives, takes place in three stages:

Stage 1 - Encoding: When a person takes information in.

Stage 2 - Consolidation: When the brain takes the encoded information and processes it, storing it in certain areas of the brain.

Stage 3 - Retrieval:. When someone recalls stored information in the brain.

For a layman, differentiating between normal memory loss and Alzheimer's disease can be puzzling because the kind of memory that is affected in everyday situations is also the kind affected in the early stages of Alzheimer's disease.

Time is memory's worst enemy. Memory loss and brain aging are a natural part of getting older. In their 50s, people will often start to report that they think their memories are going. Because they have to use more reminders or more kinds of strategies for remembering things, older adults seem to be consciously aware of their memory loss.

But even before we hit our 50s, memory loss can start to occur. Shortly after receiving information, our memory begins to deteriorate. Some information fades right away, while other things fade less quickly. There are many different forgetting curves with different rates of forgetting that depend on the nature of the material, on how important the information is to you, and how high your stress levels are.

Studies show that after some time, people probably don't remember events as they actually happened. You may think you have a vivid memory of an experience, but memory distortion does occur. The longer the period of time that passes between an event and trying to recall it, the greater the chance people are going to have some memory distortions and forgetfulness. Occasionally, time distortion causes us to forget the event completely.
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