Mind & Mood Archive

Forgetting things? Memory problems are more common than you think

It's normal to forget things from time to time, and it's normal to become somewhat more forgetful as you age. But how much forgetfulness is too much? How can you tell whether your memory lapses are normal forgetfulness and within the scope of normal aging or are a symptom of something more serious?

Healthy people can experience memory loss or memory distortion at any age. Some of these memory flaws become more pronounced with age, but — unless they are extreme and persistent — they are not considered indicators of Alzheimer's or other memory-impairing illnesses.

Exercise is as effective as antidepressants in some cases.

One in 10 adults in the United States struggles with depression, and antidepressant medications are a common way to treat the condition. However, pills aren't the only solution. Research shows that exercise is also an effective treatment. "For some people it works as well as antidepressants, although exercise alone isn't enough for someone with severe depression," says Dr. Michael Craig Miller, assistant professor of psychiatry at Harvard Medical School.

The exercise effect

Exercising starts a biological cascade of events that results in many health benefits, such as protecting against heart disease and diabetes, improving sleep, and lowering blood pressure. High-intensity exercise releases the body's feel-good chemicals called endorphins, resulting in the "runner's high" that joggers report. But for most of us, the real value is in low-intensity exercise sustained over time. That kind of activity spurs the release of proteins called neurotrophic or growth factors, which cause nerve cells to grow and make new connections. The improvement in brain function makes you feel better. "In people who are depressed, neuroscientists have noticed that the hippocampus in the brain—the region that helps regulate mood—is smaller. Exercise supports nerve cell growth in the hippocampus, improving nerve cell connections, which helps relieve depression," explains Dr. Miller.

Research we're watching

People who sleep too much or too little may be at higher risk for cognitive decline, according to a study published Sept. 21, 2020, by JAMA Network Open. Researchers looked at self-reported sleep duration from 20,065 people in two large studies, one in the United Kingdom and one in China. The participants from the United Kingdom were ages 50 and older and those living in China were 45 and older and were followed by researchers for up to 15 years. Researchers asked participants questions about their sleep patterns and performed a cognitive assessment. The process was repeated at two year intervals during the various study periods. Researchers found that people who slept too little (four or fewer hours a night) or too much (10 or more hours a night) were more likely than more typical sleepers to experience cognitive decline.

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While looking at the sunny side of life offers a lot of light moments, there may be a better path to well-being.

Optimism feels good. The expectation that positive things will happen is associated with happiness and better health, including fewer heart attacks and a lower risk for premature death. Pessimism, on the other hand, feels bad; it makes you depressed or anxious and keeps the fight-or-flight system activated, triggering chronic inflammation (which is linked to many diseases).

You might think the best way to improve your well-being is to cultivate an optimistic outlook. Think again. "Better than cultivating an artificial optimism is to see the situation and the world realistically," says Ronald Siegel, an assistant professor of psychology, part-time, at Harvard Medical School and medical editor of the Harvard Special Health Report Positive Psychology.

Looking for a boost or alternative to antidepressant medicines? Here are four therapies that may help relieve your symptoms.

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Many people suffer bouts of mild or moderate depression as they age. Health issues and the loss of a spouse, family member, or friend are common triggers that can lead to persistent sadness and loss of enjoyment.

While antidepressants like selective serotonin reuptake inhibitors (SSRIs) can be helpful to relieve and control symptoms, they are not always the right choice.

Researchers found that people who go on to develop Alzheimer's disease or a related disorder are more likely to miss paying a bill prior to being diagnosed, but such people face more significant related issues: poor financial decision-making and falling victim to financial scams.

Continuing work and satisfaction in life can help older adults preserve their cognitive health.

Declining brain health is perhaps the greatest fear of older adults. The good news is that you can take steps to maintain your thinking and memory for many years to come.

A healthy diet, regular aerobic exercise, and proper sleep are essential to keep your brain healthy. But work engagement and life satisfaction are two additional factors that confer mind benefits.

In the journals

Because older adults often experience temporary changes in memory and thinking after having general anesthesia, they may worry that it increases their risk of dementia. A recent study should help put their minds at ease. Researchers found no association between the type of anesthesia and dementia risk, according to findings published online Oct. 6, 2020, by the Journal of the American Geriatrics Society.

The study looked at almost 7,500 people ages 66 or older without diagnosed dementia who underwent surgery requiring either general anesthesia (where you are unconscious) or regional anesthesia (where you are awake and the surgical area is numbed). The researchers included only people who had not had any previous surgery and stopped assessing those who had a second surgery later.

Although executive function skills begin to develop in the first year of life, the time at which children reach these milestones varies. Some children experience challenges or delays related to their executive function skills, but these skills can be improved through evidence-based interventions.