Health Professionals and Psychologists

To Health Professionals

Light and Public Health are interconnected. 

* We must protect the eyes of young people and older, from the cool 

LED lighting (above 4000K) as it has high content of Blue 440nm 

wavelength light, that produces retinal photo-degradation, and in

the case of older folks macular degeneration. 

* Spectral content of lights can de-regulate the circadian system. 

Recently the AMA American Medical Association issued a warning 

that cool LED lighting (above 3000 Kelvin) can have negative impact

on human health at night. Cool LEDs suppress melatonin or the sleep

hormone, disrupting sleep which generates overeating, obesity, cancer.

* Equally important it is to receive full spectrum bright light (daylight or
reflected from a wall surface) in the morning, for people with SAD or 
Seasonal Affective Disorder and mild depression.

Some health issues from lighting are easier to fix - like glare, or multiple 

(multi-fringed) shadows form a single object, or heavy/black shadows on 

the floor, perceived by Alzheimer and dementia patients as holes that they 

have to jump over...posing risks for safety and falls. These issues are fixed 

with the selection of a lens or shield that softens, disperses, and mixes light.

To Psychologists and Neurologists

With lighting there are more complex health issues. 

* Digital LED lighting can overstimulate the Sympathetic system,

keeping people in a state of continuous arousal without repose to regenerate.

* Too many visual stimuli (too many things lighted) overwhelm the cognitive system,
numbing senses and creating tension.
* Multiple lights/fixtures result in multiple luminous edges that activate ganglion cells 
neural signals, and fire-up continuous neural response. These are unhealthy environments. 
* And I haven't started talking about lighting physics and waves, resulting in turbulent spaces.

* Multiple shadows from a single object, all in different directions at the same time

create loss of spatial orientation and disconnect and disassociation from physical reality,
and from how is it done in Nature, and the natural world.
* Trying to manipulate the Circadian system and creating bio-dynamic cycles, unless subtle,
slow pace, and following closely Nature rhythms; we will create more harm to human health.

We need places for people, that are human, lighted for calm, ego-less simple, nurturing, and 
regenerative environments. Can we do it? Yes, if we are conscious to our purpose to improve 
people's lives, to help humanity stay connected with Nature, and help people breath, focus, 
and self-center with lighting. And help people through peaceful minds to find their internal 
lights to shine, connecting with infinity field which is the true source of healing. 

Or we can continue doing what we have - ego centered lighting and damage people's health, 

we can be unconscious and excited about technology and IoT in lighting, without seeing the 
interconnectedness with human health.  

Awakening to lighting consciousness is different, is helping people to be healthy, is becoming 
excited about consciously applied simplicity and Natural feel in lighting; it is about unified and 
not fragmented, about softness and not harsh environments for people.

Is it possible to "prescribe" healthy lighting to help people stay healthy?

Yes, look no further than the free manual of Nature, where we have light and night repose, 
we have coolness in mid-morning and warmness in evenings, forms have single shadows, 
simple order and calmness pervade, and people have choice to be in light or in shadow. 

If we have to use LEDs lighting, ask yourself -  can I  do the simplest lighting, can I be 
Nature inspired, can I do essence and elevate above form. Think how good this is.

Healthy Days for All, LightHeal