Renske Lok, Ph.D. Stanford University, Department of Psychiatry and Behavioral Sciences Beyond its role in vision, light plays a...

To determine if you’re living and working in good light, its’ best to spend at least 2 hours outdoors in daylight each day. Daylight is...

This Friday March 15th, marks World Sleep Day. The theme of this year is Sleep Equity for Global Health. Good light (daylight or electric...

Jan Denneman says, "There's hardly a living creature that willingly stays indoors, with a few exceptions." We're all familiar with the...

Health coaches play a big role in advising people about a healthier lifestyles. Their advice often includes these two essentials: a...

When we think about dangers in the office, we often worry about immediate and visible hazards, such as fires, which result in clear...

When the sun comes out on a cloudy day, it often makes people happy. This isn't just a coincidence; it's the profound impact that natural...

Bright light can make us feel immediately more alert and focused. Exposure to sufficient bright light during the day makes you feel more...

Our body has a daylight detector: light-sensitive cells in our eyes, called “spheres". These connect to the part of the brain called the...

Bad light can harm our experience of energy, sleep, happiness and health. Relying on excessive coffee? Having irregular hunger and a...

Bad light can harm our experience of energy, sleep, happiness and health. Having mood swings? Feeling down or restless? Mood problems can...

Bad light can harm our experience of energy, sleep, happiness and health. Daytime fatigue? Low energy? Making more errors? Energy...

Let’s toast to a healthier and happier new year. From improving mood to enhancing sleep, daylight is nature's present to us all. Wishing...

Bad light can harm our experience of energy, sleep, happiness and health. Trouble sleeping at night? Need an alarm to wake up? Waking up...

Light supports us in everything we do. Good light means the right light at the right time. It has a great positive impact on our...

In the 100th edition of LED professional Review magazine, our board member Jan Denneman presents a commentary giving a quick overview of...

A blog by Oliver Stefani From a nutritional standpoint, much is known about healthy snacks, but defining a LIGHT snack is more complex....

In our modern lives, the significance of natural light, specifically daylight, is often underestimated. The right light at the right time...

An article by Jan Denneman for [inst]ALLICHT In the article by Jan Denneman, the significance of good lighting indoors is stressed. He...

A book written by Anneloes Opperhuizen and Marijke Gordijn. Our Board member, Marijke Gordijn, and science advisor, Anneloes Opperhuizen,...