World Health Day, observed on April 7th, serves as a poignant reminder that health is not just an individual concern but a collective responsibility. This year, the World Health Organization (WHO) emphasizes the theme "My Health, My Right," urging action towards equitable access to healthcare. In this context, it's crucial to recognize the pivotal role of lighting in shaping urban health and well-being

In the realm of urban planning, lighting often takes a backseat to considerations like infrastructure, transportation and zoning. However, its impact on human health is profound and far-reaching. As cities evolve and grow denser, it becomes increasingly imperative for planners to prioritize lighting solutions that not only enhance aesthetics but also support the physiological and psychological well-being of urban residents

At the core of this discussion lies the influence of lighting on our circadian rhythm – the internal clock that regulates our sleep-wake cycles. Natural daylight plays a critical role in synchronizing this rhythm, promoting alertness during the day and restorative sleep at night. Conversely, inadequate or improper artificial lighting can disrupt this delicate balance, leading to a myriad of health issues ranging from sleep disturbances to mood disorders.

In urban environments where access to natural light may be limited, artificial lighting assumes even greater significance in maintaining circadian health. Planners must thus prioritize the integration of lighting solutions that emulate the qualities of natural daylight, such as colour temperature and intensity, to support the well-being of residents.

Beyond circadian health, lighting also exerts a significant influence on mood and productivity. Bright, blue-enriched light has been shown to enhance cognitive function and mood, while poor lighting conditions can contribute to eye strain and diminished concentration levels.

For urban planners, this underscores the importance of designing well-lit public spaces that foster safety, comfort, and vitality. Whether it's parks, plazas, or pedestrian walkways, adequate lighting not only enhances visibility and security but also promotes social interaction and community engagement.

Furthermore, in the pursuit of sustainable urban development, energy-efficient lighting technologies offer a viable solution. LEDs and other advanced lighting systems not only reduce energy consumption but also provide greater flexibility in controlling light intensity and colour, thereby promoting both environmental and human health.