Norman Wisdom said, “As you get older three things happen. The first is your memory goes, and I can’t remember the other two.”
Many people worry about becoming forgetful. They think forgetfulness is the first sign of Alzheimer’s disease. Over the past few years, scientists have learned a lot about memory and why some kinds of memory problems are serious, but others are not1.
The Alzheimer’s Association says African-Americans are two times more likely2 to develop late-onset Alzheimer’s disease than whites and less likely to have a diagnosis of their condition, resulting in less time for treatment and planning.
Forgetfulness can be a normal part of aging. As people get older, changes occur in all parts of the body, including the brain. As a result, some people may notice that it takes longer to learn new things, they don’t remember information as well as they did, or they lose things like their glasses. These usually are signs of mild forgetfulness, not serious memory problems3.
Some older adults also find that they don’t do as well as younger people on complex memory or learning tests. Scientists have found, though, that given enough time, healthy older people can do as well as younger people do on these tests. In fact, as they age, healthy adults usually improve in areas of mental ability such as vocabulary.
Some memory problems are related to health issues that may be treatable. For example, medication side effects4, vitamin B12 deficiency, chronic alcoholism, tumors or infections in the brain, or blood clots in the brain can cause memory loss or possibly dementia5 . Some thyroid, kidney, or liver disorders also can lead to memory loss. A doctor should treat serious medical conditions like these as soon as possible.
Emotional problems, such as stress, anxiety, or depression, can make a person more forgetful and can be mistaken for dementia. For instance, someone who has recently retired or who are coping with the death of a spouse, relative, or friend may feel sad, lonely, worried, or bored. Trying to deal with these life changes leaves some people confused or forgetful.
The confusion and forgetfulness caused by emotions usually are temporary and go away when the feelings fade. The emotional problems can be eased by supportive friends and family, but if these feelings last for a long time, it is important to get help from a doctor or counselor. Treatment may include counseling, medication, or both.
For some older people, memory problems are a sign of a serious problem, such as mild cognitive impairment or dementia. Individuals who are worried about memory problems should see a doctor. The doctor might conduct or order a thorough physical and mental health evaluation to reach a diagnosis6. Often, these evaluations are conducted by a neurologist, a physician who specializes in problems related to the brain and central nervous system.
A complete medical exam for memory loss should review the person’s medical history, including the use of prescription and over-the-counter medicines, diet, past medical problems, and general health. A correct diagnosis depends on accurate details, so in addition to talking with the patient, the doctor might ask a family member, caregiver, or close friend for information.
Blood and urine tests can help the doctor find the cause of the memory problems or dementia. The doctor also might do tests for memory loss and test the person’s problem-solving and language abilities. A brain scan, such as an MRI, may help rule out some causes of the memory problems.
Amnestic Mild Cognitive Impairment (MCI)
Many people with memory problems have a condition called amnestic mild cognitive impairment7, or amnestic MCI. People with this condition have more memory problems than normal for people their age, but their symptoms are not as severe as those of people with Alzheimer’s disease, and they are able to carry out their normal daily activities.
Signs of MCI include losing things often, forgetting to go to important events and appointments, and having trouble coming up with desired words. Family and friends may notice memory lapses, and the person with MCI may worry about losing his or her memory. These worries may prompt the person to see a doctor for a diagnosis.
Researchers have found that more people with MCI than those without it go on to develop Alzheimer’s. However, not everyone who has MCI develops Alzheimer’s disease. Studies are underway to learn why some people with MCI progress to Alzheimer’s and others do not.
There currently is no standard treatment for MCI. Typically, the doctor will regularly monitor and test a person diagnosed with MCI to detect any changes in memory and thinking skills over time. No medications have been approved to treat MCI.
Dementia is the loss of thinking, memory, and reasoning skills to such an extent that it seriously affects a person’s ability to carry out daily activities. Dementia is not a disease itself but a group of symptoms caused by certain diseases or conditions such as Alzheimer’s. People with dementia lose their mental abilities at different rates.
Symptoms of dementia may include:
- Being unable to remember things
- Asking the same question or repeating the same story over and over
- Becoming lost in familiar places
- Being unable to follow directions
- Getting confused about time, people, and places
- Neglecting personal safety, hygiene, and nutrition
Two of the most common forms of dementia in older people are Alzheimer’s disease and vascular dementia. These types of dementia cannot be cured at present.
In Alzheimer’s disease8, changes in certain parts of the brain result in the death of many nerve cells. Symptoms of Alzheimer’s begin slowly and worsen steadily as damage to nerve cells spreads throughout the brain. As time goes by, forgetfulness gives way to serious problems with thinking, judgment, recognizing family and friends, and the ability to perform daily activities like driving a car or handling money. Eventually, the person needs total care.
In vascular dementia9, strokes or changes in the brain’s blood supply lead to the death of brain tissue. Symptoms of vascular dementia can vary but usually begin suddenly, depending on where in the brain the strokes occurred and how severe they were. The person’s memory, language, reasoning, and coordination may be affected. Mood and personality changes10 are common as well.
People with some forgetfulness can use a variety of techniques that may help them stay healthy and maintain their memory and mental skills. Here are some tips:
- Plan tasks, make “to do” lists, and use memory aids like notes and calendars. Some people find they remember things better if they mentally connect them to other meaningful things, such as a familiar name, song, book, or TV show.
Develop interests or hobbies and stay involved in activities that can help both the mind and body.
- Engage in physical activity and exercise. Several studies have associated exercise (such as walking) with better brain function, although more research is needed to say for sure whether exercise can help to maintain brain function or prevent or delay symptoms of Alzheimer’s.
- Limit alcohol use. Although some studies suggest that moderate alcohol use has health benefits, heavy or binge drinking over time can cause memory loss and permanent brain damage.
- Find activities, such as exercise or a hobby, to relieve feelings of stress, anxiety, or depression. If these feelings last for a long time, talk with your doctor.
For More Information About Memory Loss
The National Institute on Aging’s ADEAR Center offers information and publications in English and Spanish for families, caregivers, and professionals on diagnosis, treatment, patient care, caregiver needs, long-term care, education and training, and research related to Alzheimer’s disease.
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