Recent Blog Articles

Sleep Archive


Can blue light-blocking glasses improve your sleep?

Exposure to blue light during the daytime is desirable: it helps synchronize the body's circadian clock and helps people stay alert. But stimulation from certain wavelengths of blue light in the hours leading up to bedtime can interfere with sleep. Glasses that block stimulating blue light, whether prescription or not, are being touted as helping with sleep, but the evidence is questionable.

Cancer survivors' sleep is affected long after treatment

According to a new study, many people who have survived cancer treatment experience poor sleep long after treatment has ended. These people also reported emotional distress, financial hardship, and concern that their cancer might return. Many sleep disorders can be treated successfully, but an accurate diagnosis is essential to choosing the correct treatment.

What are the best ways to trim my waist?

Attacking visceral fat found deep inside the abdomen, around the organs, is the best way to reduce waist size. Doing more aerobic and resistance exercise, limiting sugary foods and beverages, getting enough sleep, and managing stress can help.

Embrace healthy habits for a robust memory

Healthy lifestyle habits may contribute to better brain health and sharper thinking skills. For example, getting at least seven hours of sleep each night gives the brain time to consolidate and store information and also flush out waste—including Alzheimer’s disease–related toxins. Eating a healthy diet helps ward off "mini" strokes that kill brain cells and lead to cognitive decline. Other healthy lifestyle habits that may help cognition include exercising, managing stress, and practicing mindfulness.

Waking up one hour earlier than usual may reduce depression risk

New research suggests that people who wake up an hour earlier than usual, without sleeping less, may reduce their risk of major depression.

Gadgets to help you sleep better: Do they work?

Many gadgets claim to promote better sleep. For example, white noise machines or noise-canceling earbuds may help someone fall asleep by masking unwanted sounds in the sleep environment. As another example, a sunrise alarm, which simulates the sun’s morning light, can be helpful for people with disorders of the sleep-wake cycle. Proven methods to improve sleep include cognitive behavioral therapy and good sleep hygiene, such as keeping the room dark and cool and avoiding electronic screens within two hours of bedtime.

Will getting more sleep help protect me from dementia?

A study published online April 20, 2021, by the journal Nature Communications suggests thatgetting too little sleep in midlife increases the risk for dementia later in life. Researchers analyzed the sleep data of 8,000 middle-aged adults who were followed for 25 years. People who slept six hours per night at age 50 were 22% more likely to develop dementia, compared with people who slept seven hours. People who slept six hours per night at age 60 were 37% more likely to develop dementia, compared with people who slept seven hours. The study was observational and can't prove causation.

7 strategies to prevent cancer

Making healthy lifestyle changes can prevent an estimated 40% of cancers. These include eating a healthy diet, exercising regularly, getting adequate sleep, and maintaining a healthy body weight. People can also help prevent cancers by seeking recommended cancer screenings. Some screenings merely identify cancers early, but others, such as colonoscopies and Pap tests, can find precancerous conditions and are actually able to prevent cancer.

Does exercise really boost energy levels?

Exercise can create physical changes that help increase energy levels inside the body. In addition, it can induce better sleep at night, which helps people feel more energetic in the morning.

Are toxins flushed out of the brain during sleep?

The glymphatic system is the brain's "waste management" system. It carries fresh fluid into the brain, mixes the fresh fluid with waste-filled fluid surrounding brain cells, and flushes the mix out of the brain and into the blood.

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