SLEEP

Springing forward into daylight saving time is a step back for health – a neurologist explains the medical evidence, and why this shift is worse than the fall time change. As people in the U.S. prepare to set their clocks ahead one hour on Sunday, March 12, 2023, I find myself bracing for the annual ritual of media stories about the disruptions to daily routines caused by switching from standard time to daylight saving time. About one-third of Americans say they don’t look forward to these twice-yearly time changes. And nearly two-thirds would like to eliminate them completely, compared to 21% who aren’t sure and 16% who would like to keep moving their clocks back and forth. But the effects go beyond simple inconvenience. Researchers are discovering that “springing ahead” each March is...

Beauty Sleep Isn’t A Myth – A Sleep Medicine Expert Explains How Rest Keeps Your Skin Healthy And Youthful Have you ever woken up after a night of poor sleep, glanced in the mirror and thought, “I look tired?” You’re not imagining it. I am a neurologist who specializes in sleep medicine. And though “beauty sleep” may sound like a fairy tale, a growing body of research confirms that sleep directly shapes how our skin looks, how youthful it appears and even how attractive others perceive us to be. What happens during sleep Sleep is not just down time. Your body moves through distinct stages that serve different restorative functions. Deep, slow-wave sleep is the primary stage during which the body prioritizes tissue repair, muscle recovery and collagen production. Growth horm...

Daylight saving time and early school start times cost billions in lost productivity and health care expenses. Investigations into the 1986 Space Shuttle Challenger disaster revealed that key decision-makers worked on little sleep, raising concerns that fatigue impaired their judgment. Similarly, in 1989, the Exxon Valdez oil spill resulted in a massive environmental catastrophe. The official investigation revealed the third mate, in charge of steering the ship, was running on too little sleep, among other problems. While these specific disasters were not caused by daylight saving time, they are conclusively linked to fatigue, based on postaccident investigations and reports. They underscore the well-documented dangers of sleep deprivation and fatigue-related errors. Yet a vast body of...

Why do I feel better when I wake myself up instead of relying on an alarm? A neurologist explains the science of a restful night’s sleep.   Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com. Why do I feel better rested when I wake myself up than I do if my alarm or another person wakes me up? – Calleigh H., age 11, Oklahoma We’ve all experienced this: You’re in the middle of a lovely dream. Perhaps you’re flying. As you’re soaring through the air, you meet an eagle. The eagle looks at you, opens its beak and – BEEP! BEEP! BEEP! Your alarm goes off. Dream over, time to get up. Many people – kids and adults alike – notice that when they wake up naturally from sl...

What’s the best diet for healthy sleep? A nutritional epidemiologist explains what food choices will help you get more restful z’s. You probably already know that how you eat before bed affects your sleep. Maybe you’ve found yourself still lying awake at 2 a.m. after enjoying a cup of coffee with dessert. But did you know that your eating choices throughout the day may also affect your sleep at night? In fact, more and more evidence shows that overall dietary patterns can affect sleep quality and contribute to insomnia. I am a nutritional epidemiologist, and I’m trained to look at diets at the population level and how they affect health. In the U.S., a large percentage of the population suffers from poor sleep quality and sleep disorders like insomnia and obstructive sleep apnea, a conditi...