Understanding Forgetfulness

Last Updated: July 1, 2003

Many older people worry about becoming more forgetful. They think forgetfulness is the first sign of Alzheimer’s disease. In the past, memory loss and confusion were considered a normal part of aging. However, scientists now know that most people remain both alert and able as they age, although it may take them longer to remember things.

When is it a sign of dementia?
A lot of people experience memory lapses. Some memory problems are serious, and others are not. People who have serious changes in their memory, personality, and behavior may suffer from a form of brain disease called dementia. Dementia seriously affects a person’s ability to carry out daily activities. Alzheimer’s disease is one of many types of dementia.

Causes
Dementia is caused by many conditions; some can be reversed and others cannot. Further, many different medical conditions may cause symptoms that seem like Alzheimer’s disease, but are not.

Some medical conditions may be treatable. Reversible conditions can be caused by a high fever, dehydration, vitamin deficiency and poor nutrition, bad reactions to medicines, problems with the thyroid gland, or a minor head injury. Medical conditions like these can be serious and should be treated by a doctor as soon as possible.

The two most common forms of dementia in older people are Alzheimer’s disease and multi-infarct dementia (sometimes called vascular dementia). These types of dementia are irreversible, which means they cannot be cured.

Alzheimer’s disease
In Alzheimer’s disease, nerve cell changes in certain parts of the brain result in the death of a large number of cells.

Symptoms of Alzheimer’s disease begin slowly and become steadily worse. As the disease progresses, symptoms range from mild forgetfulness to serious impairments in thinking, judgment, and the ability to perform daily activities. Eventually, patients may need total care.

Multi-infarct dementia
In multi-infarct dementia, a series of small strokes or changes in the brain’s blood supply may result in the death of brain tissue. The location in the brain where the small strokes occur determines the seriousness of the problem and the symptoms that arise. Symptoms that begin suddenly may be a sign of this kind of dementia. People with multi-infarct dementia are likely to show signs of improvement or remain stable for long periods of time, then quickly develop new symptoms if more strokes occur. In many people with multi-infarct dementia, high blood pressure is to blame. One of the most important reasons for controlling high blood pressure is to prevent strokes.

Keeping your memory sharp
Scientists are working to develop new drugs that someday may slow, reverse, or prevent the damage caused by Alzheimer’s disease and multi-infarct dementia. In the meantime, people who have no dementia symptoms can try to keep their memory sharp.

Some suggestions include developing interests or hobbies and staying involved in activities that stimulate both the mind and body. Giving careful attention to physical fitness and exercise also may go a long way toward keeping a healthy state of mind. Limiting the use of alcoholic beverages is important, because heavy drinking over time can cause permanent brain damage.

Stress, anxiety, or depression can make a person more forgetful. Forgetfulness caused by these emotions usually is temporary and goes away when the feelings fade. However, if these feelings last for a long period of time, getting help from a professional is important. Treatment may include counseling or medication, or a combination of both.

Source: National Institute on Aging

We Have Answers Do you have medical questions or need help finding a doctor? The experts at Columbia St. Mary's and Advanced Healthcare can help. Click here.