Joined January 2026
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Day 1 of posting until every school has biologically appropriate non-toxic lighting. The lights in most classrooms were designed for cost, not kids.
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Day 18 of posting until every school has biologically appropriate non-toxic lighting. We have a large proportion of customers who home school their kids. Is an elite school or homeschool superior? Over what metrics?
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CHROMA retweeted
There's no "correct" dose of red light therapy. The precise protocols everyone sells you are mostly invented. We went looking for optimal numbers for specific categories across 9,000 studies. The answer kills the whole question. 🧵👇
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Day 17 of posting until every school has biologically appropriate non-toxic lighting. Look up melanopsin, the blue light hazard function, and the spectrum of a common cool white LED. Perhaps there's more to light than just illumination?
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The most potent tool for people who travel across time zones. Get your light right and the rest follows. getchroma.co/blogs/learn/jet…
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Replying to @AbudBakri
@getchroma sky portal mini is one of the best tools I've every purchased.
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Can the light leaking into your bedroom at night raise your Type 2 diabetes risk more than moderately bad genetics? This Lancet study (UK Biobank, 84,790 people, 13 million hours of wrist light sensor data) says yes it effing can. Brighter nights = higher diabetes. Here are the exact numbers (fully adjusted for age, sex, lifestyle, income and even polygenic risk score): Darkest nights (0-50th percentile): baseline risk 50-70th: 29% risk (HR 1.29) 70-90th: 39% risk (HR 1.39) Brightest nights 10%: 53% risk (HR 1.53) Your circadian amplitude and phase mattered too. Unnatural light timing = higher diabetes. The mind blowing part is that night light was independent of genetic risk. The jump from dark to bright nights was roughly the same risk increase as going from low to moderate genetic risk for T2D. What this means for you is that you can literally outrun bad genes by keeping your nights dark. This is one of the main reasons the Blue Light Diet was created over a decade ago. So here's a general protocol to get this done if you still want to live a modern, big city life...... → Blackout curtains night coded light bulbs and red or flux filtered screens after sunset. → No blue light 3-4 hours before bed. → Phone in redshift mode. (see all recs in replies below) From the paper....."Avoidance of light at night is “a simple and cost-effective recommendation that mitigates risk of diabetes, even in those with high genetic risk.”
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The right light during the day fixes this too. 👀
Replying to @hubermanlab
Blue light at night and sleep deprivation are essentially an Anti-GLP-1 GLP-1 treat chronic multi-decade circadian arrhythmias Modern problems require modern solutions
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Day 16 of posting until every school has biologically appropriate non-toxic lighting. Imagine paying tuition for your kid to go sit under flickering lights all day with spectrums roughly the opposite of what their biology expects.
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Most red light therapy studies use irradiance (intensity) at MULTIPLES of what the sun delivers. If our biology expects to be outside for hours a day, is it reasonable to think modern humans are starved for light?
There's no "correct" dose of red light therapy. The precise protocols everyone sells you are mostly invented. We went looking for optimal numbers for specific categories across 9,000 studies. The answer kills the whole question. 🧵👇
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Day 15 of posting until every school has biologically appropriate non-toxic lighting. Yes, "every school" is a tall ask. Elite schools will be the first with likely many years head start.
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No other portable circadian lights I've seen have sufficient violet output. Our Sky Portal Mini stands alone. The amber channel is very low stimulation for evenings too. At the same visual brightness, about half as stimulating as candlelight.
Replying to @AlmostMedia
OPN5 is opsin that aligns clock timing in the body. Visible short wavelength light Fallin on the eyes lead to clock time detection. All those metrics are downstream.. a bunch of companies make LEDs that can do the trick.
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CHROMA retweeted
More important than your macro ratio. Your sunlight-to-screen ratio.
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Day 14 of posting until every school has biologically appropriate non-toxic lighting. You care about the food they eat. You care about the air they breathe. What about the light they sit under all day? When's the last time anyone checked?
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Day 14 of posting until every school has biologically appropriate non-toxic lighting. Sure ideally the light should be able to change over the course of the day like the sun, but even static swaps to better daytime spectrums would be a DRAMATIC improvement.
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CHROMA retweeted
If people weren't UV deficient, doctors wouldn't prescribe Vitamin D pills like candy. The problem is not too much UV exposure, but too little. And the same is true for Infrared. Indoor lifestyle is only going up and along with it a lot of ailments.
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Day 13 of posting until every school has biologically appropriate non-toxic lighting. In a few years, this will seem obvious. Great schools optimize the teachers, curriculum, & building. But leave the light to chance. If you want to foster greatness, why stop at the ceiling?
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CHROMA retweeted
Truly incredible how the sun gets blamed for cancer more than the chronic circadian disruption that destroys every anti-cancer defense in the body, all of which are governed by circadian controlled mechanisms
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Day 12 of posting until every school has biologically appropriate non-toxic lighting. Waldorf paints walls in translucent layers. Steiner taught color shapes development. The point of lazure is how it catches and returns light. The color is intentional, but the light is not.
Day 11 of posting until every school has biologically appropriate non-toxic lighting. Montessori controls every variable, real wood, real glass, nothing in the room by accident. Then bolts standard lights to the ceiling. Does a prepared environment need to stop at eye level?
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Modern indoor environments are the anomaly. Standard white LEDs peak at ~450nm with very low output above 660nm and below 420nm. We're starved for these bands... 100-1000x dimmer overall too. Don't fear getting "too much" light. We're built for it. getchroma.co/blogs/learn/we-…
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Circadian alignment over almost anything, any day.
You deserve more sun. You deserve more darkness at night. You deserve to experience the connection that circadian alignment creates in one’s life. Modernity takes that away by default, but in any moment, you can take it back
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