Lumie lights improve subjective well-being among shift workers participating in EuRhythDia’s diabetes research

Cambridge-based light therapy specialist Lumie reports improved subjective well-being among night shift workers participating in the EuRhythDia research project into type 2 diabetes. 

EuRhythDia is a consortium of 15 leading European universities and research-led SMEs, including Lumie. The main task of this project, which involves 325 night shift workers, is to generate knowledge about how different life style interventions in specific at risk groups impact the body’s circadian rhythms or body clock to reduce the risk of developing type 2 diabetes. 

According to the NHS in England in 2010, there were approximately 3.1 million people aged 16 or over with diabetes (both diagnosed and undiagnosed). By 2030, this figure is expected to rise to 4.6 million, with 90% of those affected having type 2 diabetes. It is known among scientists that night shift workers have a 5-fold higher risk to develop type 2 diabetes than individuals who have never worked night shifts.

The study interventions are aimed at improving the participants’ adjustment to their disrupted sleep-wake patterns by positively influencing their body clocks. One of the groups, made up of 65 night shift workers, is undergoing light therapy treatment in four different study centres in Germany, Italy and Austria. For this study Lumie has supplied Lumie Brazil, its most powerful lightbox for optimum bright light therapy. Lumie Brazil delivers 10,000lux at about 35cm and is a certified medical device, which means the products are rigorously tested to European safety and effectiveness standards.

Workers undergoing three or more consecutive night shifts are receiving light therapy daily; light is applied during the first half of the night shift, and switched off during the second half. In addition, these workers receive light therapy on off-night shift days at home, accumulating to one hour during the first three hours after waking up. The workers are otherwise maintaining their usual living habits (diet, exercise activity) and sleep-wake patterns on non-night shift days as before the study.

Project coordinator, Prof Rainer Böger from the University Medical Center Hamburg-Eppendorf in Germany says “The study participants feel very satisfied with this intervention. Those who have already finished the study reported that their subjective well-being was much improved by the light therapy. They were not only able to cope better with the work at night, but they also observed that it took them less time to re-adjust to a normal day-night cycle after the night shifts. This helped them to maintain their social life more easily.”

The EuRhythDia’s researchers now aim to study if – beyond the subjective well-being of the study participants – this treatment also helps to reduce the risk of developing chronic diseases, such as diabetes mellitus.

“We are eager to see if light therapy offers an easy and effective means of helping to maintain the health of our working population. The light therapy devices can conveniently be placed on any work desk, our study participants report; many of them asked if they may keep the light therapy device even after the end of the study”, Professor Böger says.

“Lumie prides itself on being at the forefront of research into light therapy and is delighted to be able

to participate in this potentially significant project. The therapeutic impact of light on our body clock and its particular benefit to shift workers is already clear and it’s an effective and relatively inexpensive treatment. It is exciting to think light therapy might now also be shown to reduce the risk of a shift worker developing type 2 diabetes.” Jonathan Cridland, CEO, Lumie

2008 Aug;23(4):341-52.The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work’  Santhi N, Aeschbach D, Horowitz TS, Czeisler CA.

Hi-res images available on request


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Since 1991 Lumie has been researching and designing bright lights to treat seasonal affective disorder (SAD) and other conditions. Our first Bodyclock dawn simulator – an alarm that wakes you up with increasing levels of light – was the world’s first wake-up light and brought light therapy into the mainstream.

Over the years Lumie has worked closely with the scientific community. All of our products – the broadest range in Europe – are based on published research and designed by us from our base in Cambridge. Lumie is in the EuRhythDia consortium investigating circadian rhythms and type 2 diabetes, and is working with Liverpool John Moores University sports science department. We continue to find new applications for light therapy, such as treating acne.

Lumie products are medical devices, certified to the Medical Devices Directive (EC93/42) and supplied to the NHS. Distance and brightness levels (lux) are independently verified and Lumie is registered with the government's Medicines and Healthcare Products Regulatory Agency.

The benefits of light therapy reach far beyond SAD. Our lights help you to sleep well and get up in the morning, beat the afternoon slump, conquer jetlag and look after your skin. They also optimise sports performance. As official suppliers to British Swimming and British Rowing we are proud to provide lights some of  Great Britain’s elite athletes .

In the UK our products are available through as well as major retailers like John Lewis, Boots, Tesco and Selfridges and we have an expanding network of distributors across Europe and in North America. For consumers buying through we provide a home trial on all products.


About Us

Cambridge-based Lumie offers 20 years experience and expertise in light therapy and light therapy only for consumer healthcare and wellbeing, and invented the dawn simulator / wake up lights, with our Bodyclock range so that anyone could feel the benefits of waking up to light all year round. As Europe’s leading light therapy specialist, Lumie offers a wide selection of products, including Bodyclock dawn simulators, lightboxes and LED treatments, all of which are certified as medical devices and are available to customers on a 30 day home trial. Based on scientific research, Lumie has lights for skincare, the treatment of mood and circadian rhythm disorders such as Seasonal Affective Disorder (SAD) and sleep issues, and for the relief of allergies like hay fever. Working in association with leading experts in Dermatology, Psychiatry and Chronobiology, Lumie has earned the respect of the medical profession by innovating products that are based on developments in scientific research and clinical trials. Lumie is a massive success in the mainstream health and wellbeing arena and prides itself on providing the highest level of personalised care to customers by offering knowledgeable, friendly advice through its customer care team and via its internet forum, In the UK our products are available through as well as major retailers like John Lewis, Boots, Tesco and Selfridges and we have an expanding network of distributors across Europe and in North America.