Memory loss or progressive declining memory especially the short term memory loss; it appears very simple to talk about memory loss; but the reality can be understood only by a fellow who is suffering from this problem.

We all forget things once in a while. Maybe you've forgotten to send a card for someone's birthday or to return an overdue library book. Forgetting stuff is a part of life and it often becomes more common as people age.

But Alzheimer disease, which affects some older people, is different from everyday forgetting. It is a condition that permanently affects the brain, and over time, makes it harder to remember even basic stuff, like how to tie a shoe. Eventually, the person may have trouble remembering the names and faces of family members — or even who he or she is. This can be very sad for the person and their families. It's important to know that Alzheimer disease does not affect kids. It usually affects people over 65 years of age.

Our brain works by sending signals. Chemical messengers, called neurotransmitters, allow brain cells to communicate with each other. But a person with Alzheimer disease has decreased amounts of neurotransmitters. He might develop deposits of stuff (protein and fiber) that prevent the cells from working properly. When this happens, the cells can't send the right signals to other parts of the brain. Over time, brain cells affected by Alzheimer disease also begin to shrink and die.

Lots of research is being done to find out more about the causes of Alzheimer disease. There is no one reason why people get Alzheimer disease. Older people are more likely to get it, and the risk gets greater the older the person gets. For instance, the risk is higher for someone who is 85 than it is for someone who is 65. And women are more likely to get it than men.

Other factors are high blood pressure, high cholesterol, Down syndrome, or having a head injury.

On the positive side, researchers believe exercise, a healthy diet, and taking steps to keep your mind active (like doing crossword puzzles) may help delay the onset of Alzheimer disease.

The first sign of Alzheimer disease is a continuous pattern of forgetting things. This starts to affect a person's daily life. He or she may forget where the grocery store is or the names of family and friends. This stage of the disease may last for some time or quickly progress, causing memory loss and forgetfulness to get worse.

The likelihood of having Alzheimer's disease increases substantially after the age of 70 and may affect around 50% of persons over the age of 85. Nonetheless, Alzheimer's disease is not a normal part of aging and is not something that inevitably happens in later life. For example, many people live to over 100 years of age and never develop Alzheimer's disease. So Alzheimer's disease is more concerned with the diet and lifestyle.

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