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

You've been forgetting things lately 鈥� 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.

Diet, exercise, and sleep work together, and all three can have an effect on our daily well-being and longevity. Sleep impacts our eating patterns, and our eating patterns affect our sleep: lack of quality sleep may make people eat more, and make less healthy food choices, but certain foods contain substances that may enhance sleep.

It's more accessible than ever before, but is it the right medicine for you?

Medical marijuana 鈥� also referred to as medical cannabis 鈥� has enjoyed a boom in recent years. More states have legalized it, more products are available, and more people have turned to it for help, especially older adults.

A study in the April 2020 JAMA Internal Medicine found that the number of adults ages 65 and older using medical cannabis increased from 2.4% to 4.2% between 2015 and 2018.

Pillows can help or hurt, depending on their firmness and your sleep position.

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You probably know someone who won't leave home without a special pillow, claiming that a particular bag of fluff or feathers is the key to a good night's sleep. And that person may be on to something. "Anything that will make you more comfortable will improve the likelihood of getting a good night's sleep," says Dr. Lawrence Epstein, a sleep expert at Harvard-affiliated Brigham and Women's Hospital.

But the benefits of pillows don't go much further than comfort and positioning. Sometimes pillows even hurt your health.

The deaths of friends and family members become more common as you age. Here is how to endure the grieving process.

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Most men don't face much personal loss early in their lives. Yet, once they reach a certain age, they will encounter the experience of losing someone important to them 鈥� a spouse, a friend, a relative 鈥� and the feelings of grief that often follow.

"Grief is a natural response to loss, but it is something that men are not prepared for, and they often struggle to understand how it can affect their lives," says Dr. Eric Bui, associate director for research at the Center for Anxiety and Traumatic Stress Disorders and Complicated Grief Program at Harvard-affiliated Massachusetts General Hospital.

Observe these caveats if you use over-the-counter drugs or dietary supplements to help you sleep.

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It's 2 a.m. and you can't sleep. Is it okay to take a nonprescription remedy? "They're not meant for the long term, but it may be okay for an occasional night of problems with sleep," says sleep expert Dr. Lawrence Epstein, an instructor in medicine at Harvard Medical School.

But which option should you reach for? Drugstore shelves are lined with a dizzying array of products promising a good night's sleep. They fall into two categories: nonprescription medications and dietary supplements.

Your sleeping cycle changes as you age, but there are ways to ensure you get a good night's rest.

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Most men experience bouts of sleeplessness as they age. They have trouble going to sleep, wake up in the night, and then have trouble falling back to sleep.

Most of this has to do with normal aging, but don't think you need less sleep because you are older. "Research has shown that your sleep needs stay constant throughout adulthood," says Dr. Lawrence Epstein, associate physician with the Division of Sleep and Circadian Disorders at Harvard-affiliated Brigham and Women's Hospital. "Instead, it's your sleep patterns that change, and that is what can interfere with sleep quality."

Ask the doctors

Q. My friend was recently diagnosed with fibromyalgia, but it seems like she might be imagining her symptoms. Is fibromyalgia a real condition?

A. The short answer to your question is yes. Fibromyalgia is a real condition that affects some four million Americans. It's a chronic pain syndrome that experts believe may be caused by a malfunctioning nervous system. Researchers using magnetic resonance imaging to examine the brains of people with fibromyalgia have found abnormalities in the part of the brain that processes pain signals from the body. It appears that this part of the brain is essentially boosting the intensity of normal pain signals, potentially causing the body to feel pain without a physical cause.

People with insomnia struggle to get a good night's rest and wonder how to sleep better They may be plagued by trouble falling asleep, unwelcome awakenings during the night, or fitful sleep - alone or in combination. They may feel drowsy during the day and yet be unable to nap. Insomnia can leave a person feeling anxious and irritable or forgetful and unable to concentrate.听

Finding an effective solution requires uncovering the cause. Nearly half of insomnia cases stem from psychological or emotional issues. Stressful events, mild depression, or an anxiety disorder can make falling asleep and staying asleep difficult. Ideally, once the underlying cause is treated, the insomnia improves.

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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