circadian rhythms

12 Stories

Our Bodies Fight Off Illness Far Better in the Mornings

Some viruses and pathogens even manipulate our molecular 'clockwork' to up their chance of thriving

(Newser) - Studies have suggested that the time of day one receives a flu shot can actually affect how effective it is, and now University of Cambridge researchers are reporting in the Proceedings of the National Academy of Sciences that our immune systems are better at fighting off viruses and pathogens at... More »

Nonstop Artificial Light Might Even Affect Your Bones

In a new study, mice became more frail, but only temporarily

(Newser) - Roughly one-third of the globe can no longer see the Milky Way thanks to artificial light at night. The impact of light pollution has long been obvious, but scientists are now exploring the role of constant exposure to light on health, and a study in the journal Current Biology adds... More »

Flying East Is a Pain for Your Brain

Biological clock prefers a longer day achieved by flying west: study

(Newser) - A flight from Paris to New York is easier on the brain than one from New York to Paris, according to a new study that finds jet lag is based not only on distance traveled, but also the direction of travel. In the journal Chaos , researchers from the University of... More »

Morning Person or Night Owl? Your Genes May Decide

Biology may be influencing if you stay up all night or wake up with the sun

(Newser) - You may be naturally disposed toward being a morning person or a night owl—and scientists are now saying that may have a true biological basis that's hard to fight, the Guardian reports. Per a study published Tuesday in Nature Communications , researchers under the direction of 23andMe lead scientist... More »

How Being a 'Lark' or 'Owl' Affects Performance

Study: Time one wakes, plays has a dramatic impact

(Newser) - If you're an early riser, your peak performance is earlier in the day, typically around lunchtime. If you're a night owl who prefers to sleep in, your prime time is closer to 8pm. One's internal body clock, which influences everything from alertness to risk of heart attack,... More »

Tiny Sea Louse Has Extra Body Clock

One for night and day, and the other for the tides

(Newser) - The speckled sea louse may be only 5mm long, but it's got something you don't: an extra body clock. Like humans and other creatures, the sea louse has one body clock that follows the circadian rhythms of night and day. But scientists have found the first molecular proof... More »

Body Clock Drug Could Cure Depression, Jet Lag, Obesity

Circadian manipulator resets rhythms in mice

(Newser) - Scientists have developed a drug that can manipulate the body clocks of mice—opening up the possibilities of treating such wide-ranging disorders as jet lag, manic depression, and obesity. The drug, developed by a team of British and American scientists, can adjust the circadian rhythms of mice by altering a... More »

High Blood Pressure Linked to Body Clock

Circadian clock possible key to better treatment of hypertension

(Newser) - Add high blood pressure to the long list of heightened risk factors for night shift workers, long-distance flight crews, and others with disturbances in the body's 24-hour clock. In findings with implications for treatment of hypertension, Japanese researchers working on mice have shown that the circadian clock directly controls a... More »

Nighttime Snacks Worse Than We Thought

Mouse study shows weight gain more than doubles on opposite schedule

(Newser) - Eating when you should be sleeping—the proverbial midnight snack, say, or the meals of night-shift workers—could put you at higher risk of obesity, Time reports. A new study fed two groups of mice the same high-fat diet on opposite schedules; the group that ate during “normal” waking... More »

Out-of-Whack Body Clocks Keep Teens Sleepy: Study

Later school start times improve sleep, decrease car accidents

(Newser) - Sleepy high-school students slumped over their desks just can’t help it, CNN reports. Most school start times play havoc with teens’ circadian rhythms: Teens naturally go to bed later than adults, and need more sleep. A new study finds pushing the high-school start time from 7:30am to 8:... More »

Genetic Test Reveals Your Body Clock

Simple mouth swab can separate the larks from the owls

(Newser) - A simple mouth swab can tell scientists who's naturally meant to get up early and could forever free people who like a morning snooze from accusations of laziness, the Daily Telegraph reports. The newly developed test reveals the activity of the genes that regulate a person's body clock and identifies... More »

From Night Owl to Early Bird?

Altering caffeine, light, can help mold sleep patterns

(Newser) - For those wide-eyed deep into the night, rising and shining with the early birds might seem like an elusive dream that comes to a jarring end each morning. But for this 5% to 30% of the population, understanding circadian rhythms can benefit their tired eyes more than chugging coffee. The... More »

12 Stories