Search results for circadian rhythm

“When daily activities shift repeatedly, the body's internal rhythms may receive inconsistent signals about when to be active, eat, and rest. A steadier routine could reduce that mismatch and support circadian control of sleep, hormone release, metabolism, and immune function.”

“But the greatest influence on the types and numbers of microbes that populate our gut microbiome throughout the lifespan comes from what – and surprisingly, when – we eat, says Dr. Elinav. Indeed, dietary components and microbial circadian rhythmicity call the shots on who stays and who goes in the gut.”

“The body's circadian rhythms – its 24-hour biological, hormonal, and behavioral cycles – are optimized for daytime eating. Consequently, eating in the late evening or nighttime hours may increase a person's risk of developing chronic diseases, such as type 2 diabetes.”

“Prolonged exposure to artificial light disrupts circadian rhythms, the internal clocks that regulate daily cycles of hormones such as melatonin and cortisol. When these rhythms are disturbed, appetite, metabolism, and fat storage can be affected in ways that promote weight gain.”

“Light exposure is one of the primary regulators of the body's circadian rhythms and plays key roles in sleep quantity and quality. For example, evidence indicates that afternoon exposure to blue light impairs the release of melatonin – the "sleepiness hormone" – in a dose-dependent manner.”

“Scientists don’t fully understand the mechanisms that drive these effects, but some evidence suggests that disturbances in circadian rhythms play vital roles. The trial involved 12 healthy young adults (aged 19 to 39 years) who engaged in an in-patient sleep study.”

“These findings suggest that morning exercise boosts cardiometabolic health better than afternoon exercise. The investigators posited that these effects may be related to circadian rhythms, which influence the body's response to exercise and dietary intake.”

“Sleep patterns change markedly during the adolescent years, driven by shifts in circadian rhythms and subsequent sleep latency – the tendency to fall asleep later in the evening than adults or young children.”

“Similarly, photoreceptors in the eyes respond to UV exposure, modulating the regulation of circadian rhythms. Findings from a new study suggest that early life exposure to ultraviolet light reduces the risk of developing early-onset multiple sclerosis (MS).”

“Finally, the participants completed a sleep study to determine the effects of circadian rhythm on brown adipose tissue metabolism. Winter swimmers had a lower core body temperature and reduced uptake of glucose by brown adipose tissue at a comfortable room temperature.”