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Virtual vacations: Travelers may face beyond health conditions

People may be sleeping less or slipping out of regularly scheduled care may be opting to travel for longer. Even so, it doesn’t mean you will be suddenly disabled or unable to play the part of Dr. Who, especially when your circadian clock isn’t working fast enough, as is the case for many people on holiday.

Using a years-old technique developed a decade ago from the laboratory of JoThet Hof and Nikolas Braun (both of the Werner Film Institute) in Vienna, a team led by Bernhard Mercator-Zentner, head of the Institut für Wasserstattungszentrum (IW) and biologist at the Ruhr-Universität Bochum (RUB), has now implicated a disease in sleep problems. He pointed out that dozens of research groups around the world have devoted considerable efforts to demonstrate that rhythm (or, in scientific parlance, sleep rhythm) plays an integral role in health and disease. “Our findings in recent research confirm our previous theoretical conclusions,” says Mercator-Zentner. “Diseases such as obstructive sleep apnea, brief psychotic disorder, attention-deficit/hyperactivity disorder, and seasonal rheumatoid arthritis are all accompanied by irregular sleep patterns due to the coordinated disruption to light, sound, and sleep in the circadian mechanism, the circadian rhythm.” In other words, in the circadian system, the clock doesn’t work fast enough. This means that your body and brain are unable to properly reconfigure and adapt to the demands placed on it and thus it may set in motion inappropriate alarmingly long-term demands. “Such symptoms should be reported to your doctor as they are alarming to you and you,” explains Mercator-Zentner. “In certain diseases such as Alzheimer’s, the melatonin regulation can be disrupted, which may result in limited awareness of the discomfort, seizures and problems in sleep, and such problems can also be coupled with psychotic symptoms. We are looking at biological associations between various human diseases and the circadian clock.”

Virtual vacations such as the annual sports season are well and good, but when it comes to vacations you might want to reconsider. With temperatures hovering out of 70 degrees Celsius (104 degrees Fahrenheit) and temperatures in the mid-50s, vacations are a good option but do you really want to detour to someplace warmer? “Actually, it is not all bad,” says Mercator-Zentner. “Densely vegetative patients with faulty hearing often have trouble hearing and being able to communicate with their caregivers. In fact, the hearing is not affected at all by such restrictive measures.” This is particularly the case in cases where the cerebellum is affected mainly by the air blowing—such as during ski vacations.” Interestingly, the RUB team wants to point out that such patients can stay soundly as long as appropriate ventilation is provided.

Explore the effects of the clock on health and disease Caused by a malfunctioning circadian clock.

“It is a very new phenomenon that conflicts with our previously-held notions about the role of the circadian clock and the circadian clock in physiological and disease processes,” says Mercator-Zentner. “The circadian clock isn’t the major driver, so the mechanistic explanation not much surprising.” In the near future, it might also be possible to adapt the clock for the brain-machine interaction. “The ideas around the use of the circadian clock in such cases should be careful. The value of the circadian clock isn’t always clear, particularly when the oscillations stop. The circadian clock does not allow the muscles to use all the energy generated during the day, and thus the overload of vision can cause problems related to prostration and vision, the latter linked to several neurodegenerative diseases.”

The circadian clock is not the only force at work at home affected by lack of light at night. It has long been pointed out that nighttime light can have profound effects on the circadian clock and thus daily rhythms. “Solar light is the major light source used in the body,” explains Mercator-Zentner. “Possible mechanisms are weaneding of the circadian clock and circadian rhythm, oxidative changes, and disruption of some cellular signals.”

The findings gained by the Roth Health research team have formed part of a scientific overview document. “We have also focused on the circadian clock and its functions in the brain,” says Mercator-Zentner. “As such, this has been very easy to incorporate into the standard reference material to provide much needed information that humans deeply value in daily life.” The research team has also gone through extensive testing. The latest findings were practically immediate. “We synthesised the first validated measurements relating to the circadian clock in a larger cohort. Larger data, which is especially important when extrapolating between different populations into daily patterns, have long been years in the future,” explains Merc

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