Mind & Mood Archive

Details of significant experiences from decades ago may still be available if you can coax them out of your memory.

Sometimes memories of certain experiences remain crystal clear for life, like the moment you said "I do," or the first time you held your baby in your arms. Other significant memories from long ago can be harder to recall. But they may still be with you; it just takes effort to retrieve them.

Which memories stay with us?

Of the many memories you accumulate every day, only those marked as meaningful are recorded in your brain's long-term files. "We have a system in our brains that tags memories that are important in some way so we'll remember them in the future," explains Dr. Andrew Budson, a neurologist and chief of Cognitive and Behavioral Neurology at VA Boston Healthcare System.

News briefs

We already know that mindfulness meditation and a mentally active life are boons to healthy aging. But do these practices also help older people struggling with mild cognitive impairment (MCI)? To find out, Harvard researchers reviewed more than a dozen recent studies that looked at the effects of either mindfulness or cognitive training (including computerized programs) on older adults with MCI. In findings published online Dec. 29, 2020, by The American Journal of Medicine, researchers concluded that both strategies have potential benefits for cognition and mood. For people with MCI, practicing mindfulness over several weeks to months seemed to sharpen attention, memory, and other mental skills, and ease anxiety and depression. Similarly, cognitive training was associated with better memory, executive function, and mood. Most of the studies included in the review were relatively small and short-term, so they don't provide strong evidence of benefit, nor could they determine how long any benefit might last. But researchers say both strategies are feasible and low-risk, with the potential to benefit thinking skills and mood in people with MCI. Now we need more research to find out how the benefits might translate into everyday life and endure over time.

Image: Image Source/Getty Images

Mindfulness can help soothe short-term and chronic pain.

Your mind is a powerful pain remedy when given the chance. Science continues to show how mindfulness can manage pain — and it doesn't take years to master.

"Using mindfulness is a way for older adults to treat ongoing chronic pain and the occasional flare-up without having to always rely on medication," says Ellen Slawsby, director of pain services at Harvard-affiliated Benson-Henry Institute for Mind Body Medicine.

In the journals

People with anxiety or depression often have trouble making sound decisions. But a study suggests their judgment can improve if they focus on past successes instead of mistakes. The findings were published online Dec. 22, 2020, by the journal eLife.

Researchers recruited 86 adults, divided into three groups. In one group were people diagnosed with generalized anxiety disorder or major depression. Another group consisted of people who showed anxiety or depression symptoms, like excessive worrying and not feeling good about the future, but were not clinically diagnosed. The final group included those without anxiety or depression.

Many cases of memory loss aren't related to dementia, but stem from other, treatable conditions.

You've been forgetting things lately — your keys, or maybe names. Sometimes you struggle to find the right word in conversations or repeat yourself to others. You may worry: are these signs of dementia?

If this sounds like you, you're not alone. Many people find their way into Dr. Tammy Hshieh's office wondering the same thing. But most of the time, it's not dementia causing their problems, says Dr. Hshieh, a geriatrician at Harvard-affiliated Brigham and Women's Hospital and Dana-Farber Cancer Institute and assistant professor of medicine at Harvard Medical School.

Research suggests that mood disorders can be lifted by spending more time outdoors.

 Image: © Sidekick/Getty Images

Looking for a simple way to help reduce stress, anxiety, and depression, and maybe even improve your memory? Take a walk in the woods.

"Many men are at higher risk for mood disorders as they age, from dealing with sudden life changes like health issues, the loss of loved ones, and even the new world of retirement," says Dr. Jason Strauss, director of geriatric psychiatry at Harvard-affiliated Cambridge Health Alliance. "They may not want to turn to medication or therapy for help, and for many, interacting with nature is one of the best self-improvement tools they can use."

The daily onslaught of news during the past year has left many people in a steady state of fatigue, resignation, and grief. The symptoms of collective trauma are widespread and familiar, but one merits special attention: numbness, which is one possible response to an overwhelming situation.

Two common classes of drugs have been linked to dementia. Fortunately, there are alternatives to both.

If you're worried about developing dementia, you've probably memorized the list of things you should do to minimize your risk—eating a healthy diet, exercising regularly, getting adequate sleep, and keeping your mind and soul engaged. In addition, some of the drugs you may be taking to help you accomplish those things could increase your risk of dementia. In two separate large population studies, both benzodiazepines (a category that includes medications for anxiety and sleeping pills) and anticholinergics (a group that encompasses medications for allergies and colds, depression, high blood pressure, and incontinence) were associated with an increased risk of dementia in people who used them for longer than a few months. In both cases, the effect increased with the dose of the drug and the duration of use.

These findings didn't come entirely as a surprise to doctors who treat older people. The Beer's List published by the American Geriatrics Society has long recognized benzodiazepines, antihistamines, and tricyclic antidepressants as potentially inappropriate for older adults, given their side effects. Such drugs are on the list because they share troubling side effects—confusion, clouded thinking, and memory lapses—that can lead to falls, fractures, and auto accidents.

Too much time together makes for tense moments. Cutting each other some slack and setting ground rules will help.

There's such a thing as too much togetherness at home, no matter if you're with a romantic partner, an adult child, a grandchild, or a friend. "Because of the pandemic, we're frozen in place with people, but we aren't meant to be in the same space all day long," says Dr. Robert Waldinger, a psychiatrist with Harvard-affiliated Massachusetts General Hospital.

Keeping the peace starts with understanding why you may be getting on each other's nerves. Then you can try following a few rules to get along better.

In the journals

Flavanols give fruits and vegetables their bright colors. They are also found in tea and cocoa. Observational studies have shown that eating foods rich in flavanols is linked with less cognitive decline as people age. New research suggests a possible reason why: flavanols appear to improve blood flow to the brain.

Researchers gave cocoa flavanols to 18 healthy adults in two separate trials. In one, the people consumed a cocoa drink with about 681 milligrams (mg) of flavanols. In the other, they had a cocoa drink with about 4 mg of flavanols. About two hours after having the cocoa drink, participants briefly inhaled air with high concentrations of carbon dioxide to raise their blood level above normal. (The brain's normal response to high blood carbon dioxide levels is to increase both blood flow to the brain and its uptake of oxygen.) The researchers then measured the speed of brain oxygenation and administered a set of mental tasks to assess cognitive performance. People had a faster brain oxygenation response after consuming high amounts of flavanols compared with lower amounts. They also scored higher on the cognitive tests and correctly solved problems 11% quicker.