You’ve heard it for some time now, incandescent lightbulbs will officially be banned for sale by retailers in the U.S. However it officially goes into fully effect NEXT WEEK. Americans will only be able to purchase LED lights from retailers across the country. The government began warnings in January, and has since officially rolled out the ban on manufacturing and sale of incandescent bulbs. WHY? LED lights provide more “light” using 75% less energy and last 25 times longer than incandescents. Sounds like a no brainer switch then right? WRONG. LED lights are significantly worse for your health, here’s why.
Our light environment is one of the most underrated, overlooked aspects of health. I will write plenty more about this topic in the future. It is complex at the surface, but in reality the takeaway is simple. Our light environment is one if not THE most important inputs to our biology. It dictates our body’s “clock” or circadian rhythm. When you disrupt your circadian rhythm frequently, you are significantly more at risk to ALL CHRONIC DISEASES. Why? Your are inherently destroying your ability to get restorative sleep, keeping your body in a sympathetic state, creating dysfunctional mitochondria, and increasing oxidative stress + inflammation. Just from light? YES.
“We summarize recent evidence suggesting that circadian disruption may also be a predisposing factor for the development of age-related neurodegenerative diseases (NDDs) such as Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD).”
“... inappropriate environmental conditions such as Artificial Light at Night (ALAN) can cause circadian disruption or chronodisruption (CD) which can result in a variety of pathological diseases , including premature aging .” -STUDY LINK
Blue light stimulates cortisol production, the “stress” hormone that everyone has the knickers in a bunch about in the health community about mitigating through the use of supplements like Ashwaghanda. Here’s the deal, you don’t need to “mitigate” cortisol, you need to regulate its rhythm. Cortisol is the antithesis of melatonin, and the two hormones are meant to perform a dance everyday where one rises as the other falls…in accordance with the light cycles. However, that dance, that rhythm has been disrupted by artificial light.
Melatonin warrants five newsletters just on its own, but know that the same blue light that stimulates cortisol production also suppresses melatonin production. If you do not produce sufficient melatonin, your body is missing out on a whole host of anti-oxidant, anti-cancer benefits. Melatonin is driven by light, and is the composer of our mitochondria (dictates mito fusion/fission, mitophagy, etc.).
LED (light emitting diode) lighting has a much “more artificial” light spectrum profile than incandescent bulbs. Full spectrum sunlight is the only light that would have existed for hundred’s of thousands of years of human existence. Then came the discovery/ability to use fire as a light source. Although full spectrum sunlight contains the entire visible light spectrum + UV + infrared, each of these wavelengths come through at different angles of the sun. This is the NUANCE that matters:
There is no UV present at sunrise/sunset
UVA appears when the sun is >10 degrees above horizon. UVB at sun angle > 30 degrees
At dusk/dawn and sunrise/sunset, blue light wavelengths are scattered while red light remains intact (longer wavelength). Why sunrises/sunsets are more red/orange than blue
Blue light is NEVER present in natural sunlight without accompanying red/infrared wavelengths
If you look at the light spectrum of LEDs, you will see a VERY high concentration of blue wavelengths, green to yellow wavelengths, and very little red/infrared wavelengths. Conversely, incandescent bulbs have NO blue light, little to no green/yellow and is majority red/infrared. This is why incandescent bulbs are so inefficient, because they dissipate so much heat in the form of infrared light (we can’t see infrared). Red and infrared (especially NIR), are very healing/low energy wavelengths. They are beneficial for mitochondrial health, especially the 650-800nm range. Sunlight is predominantly Red/infrared (40-50%) and these wavelengths are always present when the sun is up.
When you use LEDs you are creating a VERY artificial light environment with a lot of isolated blue, green, yellow light wavelengths and almost no red/infrared. This is extremely different from sunlight. This is especially problematic when using LEDs at NIGHT, because as stated…blue light suppresses melatonin production. Incandescent bulbs are a far better option since they are nearly all red/infrared light. This has a much less pronounced effect on melatonin, and is more in line with natural sunlight. It is also far lower in temperature, which again is a safer bet at night time.
Before Edison invented the light bulb, humans only used fire for light at night (or early morning). Incandescent bulbs are inherently FAR MORE similar in light spectrum profile to fire and have a much less harmful effect on melatonin. The estimates for suppression of melatonin in the graph below are certainly estimates, i think incandescent bulbs would actually be a bit lower but it depends on quantity and brightness as well.
TLDR: LEDs are shitcoins for light. They are far more artificial in terms of light spectrum. They are stealing your melatonin away from you. Avoid at all costs (especially at night), or wear blue light blocking glasses if you must. You can buy “red or warmer LEDs” but they aren’t really a true red light source because most just put phosphorous over a white LED to alter the warmth of the light.
STOCK UP on incandescent bulbs (good for keeping your house warm in the winter) before they are $100/pop. The government does NOT CARE about your health.
BlockBlueLight Glasses + Red Bulbs (Code TRISTAN10)
Stay Sovereign,
Tristan