This week in our Healthy Lighting Home journey, we step back into the darkroom to explore one of the most critical aspects of modern living: managing blue light. Blue light plays a vital role in the morning, providing the cortisol boost we need to wake up and face the day. But when it lingers into our evenings, especially with the use of LED lighting, it interferes with melatonin production, disrupts sleep, and ultimately affects our long-term health.

The solution lies in dynamic lighting—gradually dimming and shifting colour temperature as the evening unfolds. Moving towards a candlelight warmth of around 1800K helps remove blue content and minimise green light, allowing the body’s internal clock to settle into rest. It’s not about living in darkness but about creating a lighting environment that works in harmony with our biology. When we design lighting for health, we design for the way we’re meant to live.

Hospitality has quietly understood this for decades. The warm, low light of restaurants and hotels isn’t just about atmosphere, it’s about instinctively supporting relaxation and wellbeing. What feels inviting is often what’s healthiest. Perhaps it’s time we took that same wisdom into our homes and commercial projects, creating spaces that help us wind down, sleep better, and live brighter days as a result.

Monica Duggan

Monica grew up with a screwdriver & bulb in her hands before she started to 'hassle' the boss! After gallivanting around the world & getting an education she worked in all areas of the business, and was a natural fit for developing Willie Duggan further. She does her best thinking struggling up a mountain, hiking a trail or beating herself up in the gym!