Recently, during discussions with our US partner LEDmetric, they cited an article that had been widely shared on overseas social media:
《The Light Revolution: Top Three 2026 Light Studies That Change Everything》
Meet Dr. Max Gulhane, an Aussie doctor who’s been challenging conventional sun exposure guidelines for years, and Jonathan Jerki, a biomedical science student from the US who’s been educating thousands on social media about the critical role of light wavelengths in human health. Together, they’ve just dissected three ground-breaking papers published in 2026 (and it’s only February) that are rewriting what we know about sun exposure, longevity, and metabolic health. Let’s dive in….
Study #1: Why Sun Avoiders Die Younger
Richard Weller (yes, the Edinburgh dermatologist we’ve mentioned before) just dropped what might be the most important sun exposure study ever published.(https://www.medrxiv.org/content/10.64898/2026.01.08.26343592v1) Using the massive UK Biobank dataset with over 400,000 participants, his team created something called the “Sun-BEEM score” to categorise people’s UV exposure as low, medium, or high.
Here’s what he found: those with the highest sun exposure had a 16% reduction in all-cause mortality and a whopping 23% reduction in cardiovascular death compared to sun avoiders. And here’s the kicker—they saw a perfect dose-dependent curve. The more sun, the better outcomes across the board.
But what about skin cancer, I hear you say? Yes, more UV exposure meant slightly more melanoma cases but it’s all about risk vs reward, my friend.
The researchers ran a fascinating thought experiment within this study. Based on their data, they found if everyone fell into the low UV exposure category, you’d prevent 39 melanoma deaths, but you’d cause 3,000 excess deaths from other causes. Flip it around, if you put everyone in the high UV exposure category, you’d save 4,700 lives but lose 23 to melanoma.
The ratio? For every one skin cancer death you prevent by avoiding the sun, you cause 75 deaths from cardiovascular disease and other cancers.
As the researchers bluntly stated: “Overall, these findings challenge the simplistic view that sunlight is primarily a skin carcinogen whose benefits can be replaced by vitamin D tablets and instead, support a more balanced perspective in which UV exposure contributes meaningfully, and not fully substitutable, to the prevention of cardiovascular disease and other major cancers.”
Translation? We’ve been so obsessed with preventing skin cancer that we’ve ignored the elephant in the room—heart disease and internal cancers that are actually killing far more people.
Study #2: Why your LED-lit office is destroying your eyesight
We already covered this study by Glen Jeffery ( https://unstoppables.io/2025/12/06/red-light-heals-plastic-kettle-dangers-ms-explosion-in-australia/) a couple of weeks ago, but here it is again for those that may have missed it. It’s a goodie and worth revisiting.
Glen Jeffery’s team took infrared cameras into a typical UK office building – no windows, glass that reflects infrared light, only LED lighting. When they photographed the environment with infrared cameras, it was essentially a black void. Zero near-infrared light.
Then they did something brilliantly simple: they placed 60-watt incandescent bulbs on workers’ desks for two weeks. That’s it. No other changes.
The results? A 28% improvement in visual function (color contrast sensitivity) that lasted at least six weeks after removing the bulbs. The participants’ eyes were literally getting healthier just from adding back the wavelengths of light their mitochondria desperately needed.
Here’s why this matters: Your retina is one of the most mitochondrial-dense tissues in your body. When you flood it with blue-heavy LED light and starve it of red and infrared wavelengths, your mitochondria can’t produce adequate ATP. Your vision suffers. Your brain suffers. Your entire body suffers.
As Max powerfully stated:
“By putting LED lighting in all of our indoor environments, we are sacrificing our mitochondrial health. We are sacrificing our mitochondrial health in our eye, in our brain, in our heart, throughout our body on the altar of green energy.”
Government regulations prioritised energy efficiency over human health and biology—and now we’re all paying the price. If you’re goal is healthspan and longevity – daily sun exposure is your friend.
Study #3: How the light in your workspace controls your blood sugar—whether you’re eating kale or cookies
In the final study ( https://pubmed.ncbi.nlm.nih.gov/41418772/), researchers took Type 2 diabetics and placed them in two different work environments: one with natural daylight streaming through windows, another with only LED lighting. Same food. Same activity. Only difference? The light.
Those working by windows had more time in normal glucose range and lower 24-hour glucose variability. Why? The dynamic shifting of natural light throughout the day—from orange at sunrise, to blue at midday, back to orange at sunset—sets your circadian rhythm. This rhythm literally controls gene transcription in your muscles, liver, pancreas, and fat tissue. Under static LED lighting? Your body has no idea what time it is. Your metabolic machinery goes haywire.
The Bottom Line
These three studies paint a bleak picture: modern indoor environments are profoundly alien to human biology. We evolved under full-spectrum sunlight from dawn to dusk. Now we’re locked in LED-lit boxes, made to fear UV, starved of infrared and the dynamic light patterns our bodies expect. We all know about the importance of eating a healthy diet and getting adequate exercise and movement in our day, but now we need to discuss light. As Dr Max perfectly summarised: “You can’t out-run or out-eat a junk light diet.”
Your Quick 5 Step Action Plan:
- Get outside daily and regularly — your life literally depends on it
- Add an incandescent bulb to your work desk (seriously, do this today)
- Work near windows when possible.
- Even better, open nearby windows and doors to let the light in
- Remember our goal is to develop a healthy respect and safe relationship with the sun
The science is crystal clear. The question is: will the medical establishment and people wake up before it’s too late?
This article was written by Dr. Max Gulhane 和 Jonathan Jerki, who analyzed three studies released in early 2026 and provided clear, pointed summaries of their findings.
The article focuses on three categories of research:
1️⃣ UV exposure and all-cause mortality
2️⃣ The potential impact of indoor LED environments lacking near-infrared light on mitochondrial function
3️⃣ The potential effects of natural light environments on blood glucose stability
In social media dissemination, these studies have been further summarized as:
- “Avoiding sun may increase mortality risk”
- “LED lighting is harming our health”
- “We should embrace full-spectrum light sources again”
These statements are highly viral and have begun to enter industry discussions.
As a team long engaged in light environment research and engineering practice, we believe:
These studies are worth serious discussion, but must be understood in a structured way.
I. Basic Characteristics of the Studies Cited
1️⃣ UV Exposure and Mortality Study
This study is based on large databases such as the UK Biobank. Researchers created a UV exposure score and analyzed its association with all-cause and cardiovascular mortality.
Findings:
- High UV exposure groups showed statistically lower mortality risk.
However, it is important to note:
- This is observational epidemiology.
- Lifestyle and other confounding variables cannot be fully separated.
- Statistical correlation does not equal causation.
The study presents a possible association, not an engineering prescription.
2️⃣ LED Office Environment & Broad-Spectrum Supplementation Experiment
The study added broad-spectrum light in a windowless LED office environment and observed changes in visual metrics.
Results:
- Some improvement in visual contrast sensitivity was observed.
Rational interpretation:
- Small sample size
- Short intervention period
- No conclusions on long-term systemic health
Implication:
- The spectral structure of modern indoor light environments deserves further attention.
- However, the study does not provide a “replacement light source path.”
3️⃣ Natural Light and Blood Glucose Stability Study
Findings:
- Diabetic patients working in natural daylight environments had more stable blood glucose fluctuations.
Implication:
- Circadian signals may be linked to metabolic regulation.
Note:
- The advantage of natural light comes from:
- Spectral continuity
- Intensity variation
- Dynamic temporal structure
- Spatial distribution differences
- It is not a single wavelength effect.
II. Why the Industry is Drawn to the “Light Revolution” Narrative
Light and health naturally attract attention:
- Longevity
- Vision
- Chronic diseases
- Mitochondria
- Energy metabolism
When complex biological mechanisms are compressed into simplified slogans, binary oppositions emerge:
- LED vs. incandescent
- Artificial vs. natural light
True, mature industry upgrades are structural, not oppositional.
III. Core Question: Do We Understand “Light Exposure Structure”?
Instead of asking “Which light is healthier?” the real question is:
Do we have the ability to measure and model light exposure structures?
Health effects of light are determined by exposure structure, not a single wavelength.
Exposure structure includes:
- Spectral composition
- Intensity
- Exposure duration
- Dynamic changes
- Spatial distribution
- Individual differences
Without structured understanding, research hype remains at the opinion level.
IV. Industry Turning Point: From “Light Source” to “Exposure Management”
In the past 20 years, the lighting industry focused on:
- Luminous efficacy
- Energy consumption
- Cost
With the gradual maturity of CIE S 026, α-opic metrics, and the WELL Light Concept, the industry is entering a new stage:
- From visual satisfaction → physiological support
This means lighting environments must be:
✔ Measurable
✔ Verifiable
✔ Repeatable
LRS efforts over the past few years include:
- Multi-spectral field measurement technology
- α-opic calculation models
- Light exposure structure evaluation frameworks
- Design → verification → operation loop
The In. Licht series was developed in this context—
Not as an isolated product, but as a field node in the light exposure management ecosystem.
V. Conclusion: Rationality is a Sign of Industry Maturity
Overseas research is not a threat, but a reminder.
True industry direction is determined not by a single paper, but by whether we can establish:
- Dose models
- Spatial models
- Human factor models
- Standard integration frameworks
- On-site verification capabilities
In the next article, we will systematically discuss:
The three main models of light exposure and their integration with international standards.
(To be continued)
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