Sleep Archive

It takes a one-two punch to lower these risks for heart disease, heart attack, and stroke.

High cholesterol has long been known as a bad actor in heart health. Too much LDL (bad) cholesterol in your blood can lead to fatty deposits in your arteries and the formation of artery-narrowing plaque (atherosclerosis), heart attacks, and strokes.

But LDL doesn't act alone. Chronic inflammation — a persistent activation of the immune system — also fuels heart attack and stroke risks. That means you must address both high LDL levels and chronic inflammation to protect your health.

Obstructive sleep apnea leaves people tired, but also puts them at risk for other health problems. Not everyone with sleep apnea can use an airway pressure machine, and some may simply prefer not to. There are oral appliances available, but are they effective?

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.

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 — also referred to as medical cannabis — 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.

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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The soothing and motivational sounds of music have far-reaching health benefits.

A favorite musical tune can stir up positive memories, boost your mood, and create a soothing, relaxing setting. But used in specific ways, music also is a valuable tool for supporting your health.

"Whether you need to relax, increase your energy, improve your thinking, or just get motivated for the day, music can provide extra support when you need it the most," says Marisabelle Diaz-Falcon, a music therapist with Harvard-affiliated Massachusetts General Hospital.

Learn what will and won't increase blood sugar levels and put your health in jeopardy.

It's essential to keep your blood sugar from spiking (rising suddenly), whether you're healthy or you're among the 122 million Americans who have diabetes or prediabetes. But with all the conflicting advice in circulation, it can be hard to figure out what foods and habits you need to avoid.

Bogus claims

On the Internet you'll find many reports of factors that purportedly increase blood sugar. Here are a few claims that you should know about because they just don't hold up.

During waking hours you may feel your heart rate fluctuating, and activity or intense emotions can cause it to spike. But what happens to your heart rate when you sleep? It varies then too, depending on the phase of sleep you are in.