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Oh, hello? What the heck? Wow, this is incredible! It changes colors—I've seen pink and green. This is amazing!

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Purple is a psychological creation, not a physical reality. There are no purple photons on the light spectrum. When red and blue light are combined, the brain should perceive green, as it's halfway between the two. However, the green sensor detects neither red nor blue. Instead of a "system error," the brain invents purple. Purple represents the absence of green. Therefore, purple is a color created in the brain to represent the unexplained absence of green, but it doesn't exist in physics.

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Dr. Alexis Cohen (Jasmine Cohen) and the host discuss a wide-ranging view of health, science, and society, centered on mitochondria, light biology, and decentralized approaches to knowledge and healing. - On science, health, and authority: - Cohen argues that “we really haven’t been doing science for about seventy years now” and that modern science has become scientism, with people looking to scientists and doctors as authority figures over personal health, even though no one can fully know another’s lived body experience. - She emphasizes that aging is a reflection of mitochondrial heteroplasmy and that there are ways to slow or speed that burden, but contemporary living habits harm mitochondrial health. She asserts there are incentives to promote lifestyle advice that is not monetizable (outdoor activity, barefoot grounding, seasonal eating, movement), which she says slows research and access to information. - The conversation asserts a need to reclaim personal authority over health and to recognize life as magical and miraculous. - Personal entry into Bitcoin and crypto curiosity: - Cohen notes she and her partner became interested in Bitcoin in 2018, with a continued engagement including taking a cryptography course to understand the underlying proofs rather than accepting information at face value. - Background and work: - The host introduces Cohen as a Princeton-trained molecular biologist, a PhD focusing on metabolism, gut health, and circadian biology, who shifted from academic research to helping people rebuild health through nutrition, movement, mitochondrial function, and light exposure. Cohen shares that her own childhood illnesses, weight issues, and colitis prompted a pivot from academia to health coaching, emphasizing ownership of wellbeing through science and practical lifestyle strategies. - Cohen highlights that she values rigorous science but seeks practical lifestyle strategies to empower clients to understand their biology and take ownership of their health. - Dance, embodiment, and biology: - Cohen describes taking up social dancing (salsa, bachata, merengue, fox trot, hustle) and training intensely. She explains dancing challenges the brain in novel ways, requires being guided by a partner, and expands neural connections. - The host shares similar experiences with dance, noting body memory across decades and the importance of movement, rhythm, and social connection for health. - Mitochondria, heteroplasmy, and light: - Cohen explains mitochondria as the battery of the cell, with their own circular DNA and multiple roles in ATP production, biosynthesis, and epigenetic regulation. Heteroplasmy, the mutation burden in mitochondrial DNA, reflects dysfunction that can lead to energy production deficits across tissues. - She notes three key mitochondrial outputs: - ATP production powers cellular processes and metabolism. - Metabolic water production (including deuterium-depleted metabolic water). - Biophotons, photons largely in the UV range, emitted by mitochondria and nucleus during electron transport; older, sicker individuals emit more light due to increased permeability of the system. - Cohen argues aging mirrors mitochondrial heteroplasmy and mutation accumulation, with higher mutation burdens in tissues like immune cells, gut, liver, and brain associated with disease. She also discusses that mitochondria contribute to energy, water, and biophotons, and that modern life elevates heteroplasmy by lifestyle choices. - She argues heteroplasmy can be slowed or sped, and that there are actionable interventions—though the exact list is not exhaustively enumerated in this segment. - Why mitochondrial health isn’t the central target: - Cohen says mitochondrial health research is less profitable because it emphasizes lifestyle and environmental changes rather than drugs, which affects funding and research direction. She describes a system where focusing on broad environmental and lifestyle changes could be financially less lucrative than drug-centered approaches. - She expands on historical dynamics in science, including siloing of scientists and the development of a paywalled academic publishing model, suggesting that the system discourages holistic, integrative approaches that would unify mitochondrial biology with systems biology. - Light, circadian biology, and UVA/UVB: - The discussion shifts to light as a regulator of mitochondria. Cohen divides the sun’s spectrum into ultraviolet (UVB and UVA), visible light, blue light, and near infrared (NIR). She emphasizes that near-infrared light penetrates deeply and stimulates mitochondria, while UVB promotes melanin production via POMC and MSH peptides, affecting energy balance, mood, and metabolism. - UVB light triggers alpha-MSH and beta-endorphin production, the latter contributing to mood and dopamine support, and helps regulate energy expenditure and appetite via POMC-derived pathways; UVB exposure supports melanin synthesis, redox balance, and photoreception across tissues. - UVA light activates Neuropsin receptors on eyes and skin, aiding circadian entrainment and nitric oxide production, which improves vasodilation and nutrient delivery. Neuropsin is present in skin and testes; its stimulation is linked to testosterone and fertility enhancements. UVA also helps anchor local circadian rhythms in tissues. - Cohen discusses the misperception that UV light is universally harmful and argues that melanin is not only protective but can facilitate energy capture from high-energy photons to support energy metabolism in humans. Melanin’s roles extend beyond protection to potential energy transduction, with POMC, MSH, and alpha-MSH linking light exposure to metabolic regulation. - The My Circadian app is recommended as a tool to track sunrise, UVA/UVB rise, and lux (brightness) to optimize exposure. Cohen notes indoor environments rarely exceed 1000 lux, while outdoor brightness can reach 60,000–60,200 lux, significantly impacting serotonin production, mood, and cognition. She emphasizes the importance of bright daytime light for circadian alignment and melatonin suppression at night. - Infrared, LEDs, and indoor lighting: - The conversation covers lighting technologies, noting fluorescent tubes and LEDs minimize near-infrared and maximize blue light, which disrupts circadian rhythms and flicker, stressing the eyes and sympathetic nervous system. Cohen argues that modern lighting deprives people of infrared and UV radiation, both critical for mitochondrial function and circadian health. - She criticizes the push for energy efficiency that reduces thermal and infrared energy, arguing it contributes to systemic health issues. She emphasizes the importance of incandescent and near-infrared-rich lighting for indoor environments and sun exposure to sustain metabolic health. - Grounding, EMF, and environmental exposure: - Grounding (direct contact with the earth) is presented as a way to discharge excess positive charge in tissues, reducing inflammatory burden and supporting mitochondrial function. Cohen shares practical grounding instructions—grounding directly to the earth when possible, wearing natural fibers, and using grounding footwear. - Non-native electromagnetic fields (EMFs) from Wi-Fi, Bluetooth, 5G, and other sources are discussed as contributors to mitochondrial dysfunction and inflammation. Cohen cites Robert Becker’s historical work on non-thermal EMF effects and Havana syndrome as context for potential biological risks. She suggests practical mitigation, including reducing EMF exposure, using Ethernet where possible, and using tinfoil to shield exposure in certain situations. Plant life can absorb EMF, and grounding, sunlight, and strategic use of red and infrared light are recommended to compensate where exposure is high. - The discussion includes practical home strategies, EMF-blocking window panels, EMF-blocking paint, and even temporary shielding (e.g., tinfoil) as a do-it-yourself mitigation approach. - Travel, circadian disruption, and protocols: - Cohen outlines travel challenges: high altitude cosmic radiation exposure (non-AVMF exposure), cabin EMFs, circadian misalignment, and sedentary behavior. She suggests pre- and post-travel strategies such as grounding, sun exposure, hydration, lymphatic support, and blue-light management to ease time-zone transitions. - She promotes an ebook protocol focused on lymphatic support and circadian realignment, available for purchase, with a holiday discount code holydays. Blue-light blocking strategies and red-light strategies are included to facilitate adaptation to new time zones. - Health, mental health, and pediatric considerations: - The hosts discuss mental health concerns, including PTSD, anxiety, and depression, emphasizing circadian regulation, light exposure, sleep hygiene, and reducing screen exposure. Cohen notes the importance of bright daytime light and a dark, cool sleeping environment for sleep quality and mood. She mentions a study showing even small nighttime light exposure can influence daytime metabolic markers, emphasizing the importance of darkness at night. - Birth, medications, and vaccines: - They touch on birth experiences, epidurals, and how early life interventions can influence long-term health and microbiome development. Cohen discusses pain as a portal to healing and critiques reliance on certain pharmaceutical approaches. - On vaccines, Cohen describes observed adverse effects post COVID-19 vaccination, including histamine issues, barrier permeability, and rapid cancer reports linked to vaccine exposure, while underscoring the lack of widespread funding to investigate these relationships. She mentions turbo cancers and batch variation as topics already discussed by researchers like Kevin McKernan and a need for independent inquiry. - Decentralization, science, and Bitcoin again: - Cohen envisions a decentralized health system in which multiple modalities (acupuncture, Chinese medicine, Ayurveda, allopathic medicine) can be tested for proof of work, with outcomes guiding what works best for individuals. She believes decentralization is necessary for genuine innovation, with a future vision of a decentralized, funded light research lab and a retreat model to study circadian biology, mitochondrial function, and nature-based health in diverse environments (North America and equatorial regions). - She sees Bitcoin as a tool that enables financial sovereignty and autonomy, providing an opportunity to fund decentralized science and publish findings on blockchain to protect against censorship. She highlights the potential for Bitcoin to support a lab through deflationary funding and to empower researchers and patients alike. - Closing: - The conversation closes with practical resources: Thinkific-hosted classes, an online book club, and a QuantumU course that reframes science education around decentralized, nature-based principles. Cohen emphasizes accessible contact options (Instagram and email) and a holiday discount for courses and ebooks. The participants express enthusiasm for ongoing collaboration, travel and events, and continued education in Bitcoin, science, and holistic health. Overall, the episode centers on mitochondria as a foundational health driver, the essential role of light and circadian biology in energy, mood, metabolism, and aging, and a call for decentralized, nature-aligned science, with Bitcoin framed as a funding and governance tool to empower individuals and researchers to pursue health innovation beyond centralized institutions.

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The human “light body,” also called the subtle body, body of light, or luminous vehicle, appears across numerous traditions as a non-physical radiant form of the human being that transcends material dimensions of reality. Many traditions say it can only be realized through an evolved state of consciousness and describe it as a form of interdimensional travel and the only way to escape the cycle of death and rebirth. Neo-Platonic and theosophical schools taught of a luminous body. Gnosticism and Hermeticism describe an astral body and a subtle body, and similar concepts are said to exist in practically all eastern traditions. Tibetan Buddhism calls it the rainbow body, with centuries of documentation of those who achieved it; the transcript claims there are nearly 200,000 documented rainbow body events in Tibetan history. Father Francis Vincent Tiso, described as a Roman Catholic priest and interfaith expert on Tibetan Buddhism, is said to believe that Tibetan rainbow body teachings may have been influenced along the Silk Road by the Christian belief in the resurrection of the body. He is quoted as writing that both rainbow body and resurrection are claims that make statements about human possibilities attainable by all human subjects under certain conditions. The light body is presented as a vehicle for travel through higher dimensions and as a way to heal the human body. The transcript then turns to “scientific evidence,” stating that modern science calls a faint visible light emitted by the human body UPE (ultra-weak photon emission). It describes this light as requiring sensitive cameras and darkness to capture, and says the official scientific narrative attributes it mostly to oxidation of biomolecules, disappearing at death because metabolic processes stop. The transcript also says studies show red and near-infrared light is capable of healing the body. It further claims that luminous biophotons in the brain increase with meditation. A 2012 study is said to have measured increased photon emissions from participants’ heads when they imagined seeing a white light, described as a common meditative visualization practice. A 2016 study is said to have measured up to a 600% increase in biophoton emissions during meditative practices, claiming that focused mental states can amplify biophoton output. It claims this matches what “ancients” taught about a luminous rainbow resurrection body: the potential to heal and be cultivated into a vehicle of transcendence. Examples include ancient Egypt’s union of light, spirit, and body (Merkaba concepts: Mer, Ka, and Ba). The transcript describes the Merkaba as an energy field comprised of two counter-rotating tetrahedrons used by priests and pharaohs for interdimensional travel and spiritual ascension. It adds that the “secret of the flower of life” states the Merkaba becomes manifest by visualizing two counter-rotating intersected tetrahedrons and claims these fields exist naturally and are moved by intention. It also claims that the third Reich’s classified project “Die Glock” was based on counter-rotational spin of energy created by a mercury-based substance known as serum five two five, and that similar counter-rotation energy appears in Victor Schauberger’s repulsine motor and in Otis T. Carr’s OTC X one craft, with both spin physics and non-material physics described as hidden from the public.

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Blue objects reflect blue light and resist absorbing energy from blue lasers, making them laser-proof. In China, many roofs are being painted blue, sparking speculation about their knowledge of lasers and the color blue. Are they preparing for a laser-centric future? Join the discussion on why China is choosing blue roofs.

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Dinshaw color therapy is described as a deep rabbit hole. The speaker claims that the government burned Dinshaw’s books in the 1950s. Dinshaw realized that you could heal a person by putting different colors in front of them, based on the color they are missing. Colors cited include red, yellow, green, purple, and other color spectrums. He had a special machine placed in front of the person that corresponded to their ailment. For example, if a person had a headache, the machine would use the color red. The person would sit in the sun, and the red would go through into the eyes, which absorb all of the color spectrums, and then the headache would be resolved. If someone had a stomach issue or didn’t feel well, the color blue would be used. The person would sit in the sun, the blue would go through the eyes, and the stomach issue would be cured. The speaker states that the government burned Dinshaw’s books because color therapy works so well. The claim is made that every single disease could be resolved with color therapy. Beyond treatment, the speaker notes that food, drink, or the clothing and materials a person wears emit a frequency. On a “blue day,” one might wear the color blue to uplift the mood. If one desires more energy, one might wear red. To open the crown chakra, one might wear purple. Each color is said to represent different types of meridian lines in the body, aligning with Dinshaw’s work. The discussion expands to the broader idea of color and light spectrums, mentioning stained glass windows in cathedrals as examples of color spectrums present in the environment. The implication is that color and light have profound effects on physiological or energetic systems, as suggested by Dinshaw’s color therapy approach.

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Sunlight likely activates intrinsically sensitive melanopsin retinal ganglion cells. These cells are known to set circadian rhythm, enhance mood, focus, and alertness during the day, and improve sleep quality and duration at night. Melanopsin intrinsically photosensitive ganglion cells are also involved in networks within the eye related to blood flow. They also relate to the ciliary body, which controls aperture and movement of key components within the eye. These components relate to the crispness, or acuity, of vision at both short and long range.

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What about eye color? Blue and brown are natural and green is the result of a disease. Well, then I must have a disease because I got green eyes. The blue seems to be meant for water. And then brown eyes connecting to the night sky with the stars. this one guy also showed that he could sun gaze perfectly with brown eyes, and I thought that was fascinating. So, you know, you have to think of the color spectrums that are coming off your eyes. Every single thing is picking up on the terrain. Look them in the eyes, and you will see if you know that person. And there's much more that you will know from that person just by connecting to their eyes because you're reading their soul, and they're reading your soul.

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Speaker 0 discusses how the gut microbiome interacts with light and biophysics to shape health and disease. He notes that when we eat, 40–60% of blood volume flows through the mesenteric gut plexus, and that arteries there have melanopsin receptors. He emphasizes that prokaryotes (bacteria) dominate the microbiome and release 5,000 times more light than eukaryotic cells. A physicist, Fritz Pöt, reportedly showed that every cell on the planet emits a spectrum of extreme low frequency UV light, a signal whose exact spectrum remains unknown, but which has been observed across tested cells. He proposes the microbiome functions as a “light meteor” and, analogously, the microbiome acts as a projector in a theater with the enterocyte surface as the screen; the information embedded in the emitted light is what reveals how the microbiome operates. He asserts that the light emitted by different bacterial species is critical to the quantum biology of the human gut and that this is a key reason gut biology is not fully understood. He praises Jeff Leach’s Science paper on the Hadza: when Hadza people were given western stimuli (antibiotics, candy, Coca-Cola), their microbiome did not change; by contrast, when placed in nature under sunlight, their microbiome did not change with diet. This supports the idea that light and environment, not diet alone, sculpt the microbiome. He predicts that migration changes the microbiome due to changes in latitude and diurnal light variation, noting that the equator has no diurnal light variation, while moving away from the equator lengthens or shortens days and alters diurnal cycles. He envisions a framework where gut microbiome is sculpted by light, water, and magnetism, and he has expanded this in a CPC blog (blog CPC number 42) released on Patreon, with plans to speak in Europe about the gut-brain-light connection. The speaker calls for microbiome researchers to analyze the spectrum of light emitted by the microbiome—preferably by putting microbiome samples into a photomultiplier to measure their emitted spectrum—to better understand species variation tied to environmental light. He explains that UV light is toxic to most prokaryotes, while blue, green, and red light are favored by most bacteria; mitochondria, which originated from bacteria about 650 million years ago, tolerate UV light better due to cytochrome components. Cytochrome one channels excited electrons from light captured via photosynthesis (via the photoelectric effect) and uses that energy within the cell. NAD+/NADH (nicotinamide adenine dinucleotide) and a flavin-containing second cytochrome link light sensing to cellular energy, with NAD derived from tryptophan, an aromatic amino acid absorbing 240–400 nm light, tying light exposure to metabolic signaling. He stresses that signals come not only from the eyes but from skin and gut, with the “light show” between projector and enterocyte driving the action; thus, current microbiome knowledge is only in the first inning. He believes the gut–brain relationship is deeply tied to biophysical changes in blood and barriers (portal and mesenteric systems, hydrogen-bond networks of CSF, blood–brain barrier, cervical spinal cord barrier), explaining why many diseases with gut associations remain puzzling. He concludes with a personal stance: the gut and microbiome are among the most counterintuitive quantum-biologic tissues, and much remains to be understood, especially compared to the brain and eye.

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Speaker says that long wavelength light—red light from sunlight, infrared, and near infrared light—is beneficial for us. It is low energy, can pass into the body, and supports mitochondrial health by charging the mitochondria. The speaker recently learned that the water surrounding the mitochondria absorbs red light in the same way the ocean absorbs red light, which is why the ocean appears blue and reflects blue. The mitochondria are described as having a “mini ocean” surrounding them that absorbs red light.

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Hair color comes from melanocytes, which are created from stem cells directly contacting the hair root within the hair follicle. Researchers initially explored autoimmune and inflammatory causes, but these were ruled out. High cortisol levels were also investigated, but graying still occurred even after adrenal gland removal and stress exposure. The key finding was that chronic stress causes an elevation of noradrenaline, a neurotransmitter related to the fight-or-flight response. Noradrenaline exposure causes the stem cells to migrate away from the hair root and into the skin. This loss of stem cells leads to a loss of melanocytes, resulting in the inability to maintain hair pigmentation.

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DNA is composed of hydrogen, carbon, nitrogen, phosphorus, and oxygen arranged in a double helix. Energy information is transmitted through frequency, not electricity. Each element corresponds to a musical key and color. When a person's unique resonant frequency is played, their DNA tightens, creating a harmonic wave resequencing effect.

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Researchers recruited 22 individuals and randomized them into two groups: control and experimental. Both groups had a baseline color contrast test, which assesses visual function. Participants worked in a building with abundant artificially lit LEDs and fluorescent lighting, a spectrum with a big spike in blue light and very low red light and zero infrared light. After two weeks of working under these conditions—described as conditions the participants had experienced for the last two years—there were zero improvements in color contrast in the control group. In the experimental group, researchers added two desk lamps, each equipped with a 60-watt incandescent bulb. The incandescent bulbs provided a spectrum that added abundant infrared light, introducing longer wavelengths similar to sunlight. After two weeks of this infrared light supplementation, color contrast tests were retaken. The experimental group showed a 28% improvement in protan thresholds and a 24% improvement in tritan thresholds. After the incandescent lights were removed, improvements persisted four weeks later and six weeks later, with no other changes to the lighting. The mechanism behind these results centers on retinal energy metabolism. The retina is rich in mitochondria, requiring substantial energy. The electron transport chain in mitochondria handles energy transformation. Two scenarios are described: shining red and infrared light on mitochondria versus blue light. - Blue light: Absorbed by porphyrins in the mitochondria, leading to the production of reactive oxygen species (ROS). Excess ROS reduce ATP production, diminishing energy available to retinal cells and impairing function. - Red and infrared light: Absorbed by cytochrome c oxidase and by nano water around ATP synthase. Absorption releases nitric oxide, allowing oxygen to enter and form water. The longer wavelengths are also absorbed by nano water around ATP synthase, reducing viscosity and enabling the rotor to run faster, generating more ATP and providing more energy for retinal cells to function properly. The speaker attributes the observed improvements to these mitochondrial light–energy interactions, particularly the enhanced ATP production from red and infrared light. A practical takeaway is proposed: add incandescent lighting to the environment.

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Red light and infrared light can pass down into the deeper layers of our skin, where it can change the metabolic function of particular cells. Within the dermis, the deep layers of our skin, we have what are called sebaceous glands that actually make the oil that is present in our skin. So if you've ever had an infected hair follicle, that's not a coincidence that hair follicles tend to get infected. Part of it is because there's actually a portal down and around the hair follicle, but the sebaceous gland is where the oil is created that is going to give rise to, for instance, acne lesions.

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All the colors moved to the edge, self-assembling and growing. A strange object with tentacles lifted itself off the glass slide, appearing alive and self-aware. Not taught in medical school, unidentifiable by others in the field. Obtained more vials, another tentacle structure appeared. No movement this time, but still shocking.

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Touching the earth with bare skin changes the body's polarity. Blood viewed in real time typically shows red blood cells clumped together because cells with the same charge attract. When cells repel, it increases their surface area, allowing for better waste exchange, detoxification, repair, and regeneration. When red blood cells attract, they lose surface area. Touching the earth for a few minutes repolarizes the cells. Blood will then appear as individual cells sliding around, no longer clumped.

TED

The amazing brains and morphing skin of octopuses and other cephalopods | Roger Hanlon
Guests: Roger Hanlon
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The octopus possesses a unique brain structure with small satellite brains throughout its body, allowing for remarkable abilities. It can change its skin color and texture for dynamic camouflage, utilizing 25 million chromatophores. The octopus has 300 million neurons in its skin, surpassing the 80 million in its brain, indicating a complex nervous system. It excels in decision-making, memory, and exhibits advanced cognitive skills, including dual signaling during courtship. Cephalopods also edit RNA at a high rate, contributing to behavioral plasticity. Their capabilities inspire potential advancements in biomimicry and artificial intelligence.

Huberman Lab

Essentials: How Your Brain Functions & Interprets the World | Dr. David Berson
Guests: David Berson
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In this Huberman Lab Essentials episode, Andrew Huberman speaks with Dr. David Berson about the nervous system, focusing on how we see and perceive the world. Berson explains that visual experience is a brain phenomenon, with the retina playing a crucial role in communicating information from the eyes to the brain. Light, a form of electromagnetic radiation, is detected by neurons in the retina, which decode different wavelengths to create our perception of color. Three types of cone cells absorb light at different frequencies, and the nervous system compares these signals to interpret the wavelength composition of light. The conversation explores the intriguing melanopsin pigment found in ganglion cells, which are output neurons typically not directly sensitive to light. This pigment helps the brain understand brightness and plays a key role in the circadian system. The circadian clock, present in most body tissues, is coordinated by the suprachiasmatic nucleus (SCN) in the hypothalamus. The SCN receives signals from the retina and regulates the autonomic nervous system and hormonal systems, including melatonin production, which is suppressed by light exposure. The discussion shifts to the vestibular system, which senses movement and works with the visual system to stabilize images on the retina. This collaboration is essential for maintaining balance and preventing nausea, which can occur when there is a conflict between visual and vestibular inputs. The cerebellum plays a crucial role in coordinating these systems, acting as an air traffic control for movement and motor learning. The midbrain, specifically the superior colliculus, serves as a reflex center, integrating visual and other sensory inputs to orient the body and attention in space. The basal ganglia, located deep in the forebrain, work with the cortex to control behavior, determining when to execute or withhold actions. The visual cortex can be repurposed for other sensory processing, as demonstrated by a case where a blind woman's visual cortex was used for Braille reading. Huberman and Berson discuss the integration of sensory information in the brain, emphasizing that all sensory neurons gather information and convert it into electrical signals for decision-making. The midbrain plays a role in corroborating sensory inputs, and conflicts between these inputs can lead to motion sickness. The basal ganglia are involved in deciding whether to execute or withhold actions, with the cortex playing a role in cognitive processes related to decision-making. The conversation concludes with a discussion of the cortex, particularly the visual cortex, and its ability to be repurposed for other sensory processing in cases of blindness.

Huberman Lab

Using Light (Sunlight, Blue Light & Red Light) to Optimize Health | Huberman Lab Podcast #68
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Welcome to the Huberman Lab podcast. I'm Andrew Huberman, a professor at Stanford, and today we will explore the powerful uses of light to optimize health, including skin health, hormone balance, sleep regulation, and even dementia offsetting. Light can be translated into electrical and hormonal signals in our bodies, impacting gene expression throughout our lifespan. I will provide specific protocols based on peer-reviewed literature to help you use different wavelengths of light for health benefits. Historically, the use of light in therapy is well-established, with the Nobel Prize awarded in 1903 for phototherapy in lupus treatment. Recent research from Dr. Glenn Jeffrey at University College London highlights red light therapy's potential to counter age-related vision loss. Brief exposures to red light early in the day can significantly improve vision in individuals over 40, as it enhances ATP production in metabolically active retinal cells. I will also announce two live events in May, focusing on mental and physical health tools. The podcast aims to provide zero-cost scientific information to the public, supported by sponsors like Athletic Greens, which offers foundational nutrients and probiotics, and Thesis, which creates custom nootropics for cognitive enhancement. Now, let's discuss the physics and biology of light. Light is electromagnetic energy with various wavelengths, impacting our biology at different levels. Longer wavelengths, like red and near-infrared light, penetrate tissues more effectively than shorter wavelengths like blue or ultraviolet light. This penetration allows light to influence cellular functions, including those in mitochondria, which produce ATP. Light can modulate biological signals through absorption by specific pigments in our cells. For example, photoreceptors in our eyes absorb light, enabling vision, while melanocytes in our skin respond to UV light, affecting pigmentation. Light exposure can have both direct effects on cells and indirect effects through signaling pathways. Melatonin, a hormone regulated by light exposure, plays a crucial role in sleep and seasonal biological rhythms. Light inhibits melatonin production, which varies with seasonal changes in daylight. For optimal health, it is essential to get appropriate sunlight exposure, particularly in the morning, to regulate melatonin and support overall well-being. During winter months, individuals may experience seasonal affective disorder (SAD). Bright light exposure can help mitigate this condition. It's advisable to limit bright light exposure at night to maintain healthy melatonin levels. Using dim red or amber light at night can help avoid melatonin suppression. Research shows that UVB light exposure can enhance mood, increase testosterone and estrogen levels, and improve immune function. Regular UVB exposure can also accelerate wound healing and promote hair growth. The skin acts as an endocrine organ, responding to light and influencing hormonal pathways. Low-level light therapy (LLLT) using red and near-infrared light has shown promise in treating skin conditions like acne and promoting healing. These therapies work by enhancing mitochondrial function and reducing reactive oxygen species in cells. Recent studies indicate that red light therapy can improve visual function in older adults by enhancing ATP production in retinal cells and reducing age-related degeneration. The Jeffrey lab's research demonstrates that just a few minutes of red light exposure can lead to significant improvements in visual acuity. Additionally, Li-Huei Tsai's work at MIT shows that flickering light at specific frequencies can induce gamma oscillations in the brain, promoting neuroprotection and reducing Alzheimer's-related markers. This non-invasive approach could lead to new therapies for cognitive decline. In summary, light has profound effects on our biology, influencing hormones, mood, immune function, and cellular health. By understanding and applying these principles, we can harness the power of light to enhance our well-being. Thank you for joining me today, and I look forward to sharing more insights in future episodes.

Mark Changizi

Color vision isn’t about seeing colors, but about seeing color differences. Moment 295
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Color vision helps distinguish important emotional signals on skin; Veno Optics offers glasses to enhance this ability.

Mark Changizi

Artists know that skin is actually deeply colorful. Moment 298
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Human skin color varies due to blood oxygenation, influencing emotional perception and artistic representation.

TED

The Fantastically Weird World of Photosynthetic Sea Slugs | Michael Middlebrooks | TED
Guests: Michael Middlebrooks
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Michael Middlebrooks discusses the fascinating relationship between sea slugs and solar power, emphasizing that some animals, like corals and certain jellyfish, can photosynthesize through symbiosis with algae. He highlights the diversity of mollusks, particularly gastropods, which include slugs and nudibranchs. Notably, sacoglossan sea slugs exhibit kleptoplasty, stealing chloroplasts from algae to photosynthesize. Middlebrooks reveals that some slugs can produce chlorophyll, a process not typically seen in animals. He concludes by expressing the vast unknowns in slug biology, inviting curiosity about these unique creatures.

The Why Files

Why Ancient People Didn't See the Color Blue
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The color blue was largely unrecognized in ancient cultures, including the Greeks, who described it as a shade of green. William Gladstone noted that Homer’s works contained no references to blue, leading researchers to find that blue was absent in many ancient texts. Blue emerged as a distinct color with the invention of blue dye in Egypt. Additionally, some individuals, like tetrachromats, can see up to a hundred million colors, yet they may not recognize these colors due to a lack of linguistic priming.

Huberman Lab

Using Red Light to Improve Metabolism & the Harmful Effects of LEDs | Dr. Glen Jeffery
Guests: Dr. Glen Jeffery
reSee.it Podcast Summary
In this Huberman Lab episode, Andrew Huberman speaks with Dr. Glen Jeffrey to explore how different wavelengths of light shape cellular energy, metabolism, and longevity, and why indoor lighting—especially modern LEDs—may have profound health implications. The conversation opens with a warning about short-wavelength light, particularly from LEDs, and a rigorous case for viewing lighting as a public health issue. Dr. Jeffrey explains that mitochondria respond to light not in isolation but through their watery, intracellular milieu; long-wavelength light, including red and near-infrared wavelengths, appears to boost mitochondrial function by affecting the viscosity and dynamics of intracellular water, thereby accelerating ATP production and upregulating mitochondrial proteins. This mechanistic frame helps account for observed physiological effects, from improved skin and vision to better blood sugar regulation, and even potential protection against mitochondrial damage from excessive LED exposure. The pair discuss striking demonstrations: red light can lower glucose spikes in a controlled study when applied to a small patch of skin, and bees and retinal cells show immediate metabolic responses to different wavelengths. They emphasize that light delivered to specific tissues can produce systemic effects through intercellular mitochondrial communication, possibly via cytokines and vesicles that travel through the body, suggesting a body-wide network of mitochondrial signaling rather than isolated organ effects. The hosts also cover the depth of light penetration, noting that long-wavelength photons can traverse skin and skull, albeit with variability due to tissue scattering and absorption by water and deoxygenated blood, while short-wavelength blue light tends to drive deleterious changes in mitochondria, weight regulation, and liver stress in animal models. This leads to a broader discussion of how the built environment—architectural lighting, glass insulation, and indoor plants—can influence mitochondrial health, cognitive function, and vision, with implications for schools, offices, and healthcare facilities. They stress the importance of balance across the spectrum, highlighting that sunlight provides a natural, balanced mix of wavelengths, whereas artificial lighting often skews toward blue, demanding strategies such as dimmer incandescent or halogen lighting in the morning and protective measures at night. The episode closes with reflections on early intervention in mitochondrial-related diseases, ongoing clinical trials for retinal and systemic benefits of red light, and the hopeful potential for low-cost, widely accessible lighting adjustments to advance public health, energy efficiency, and quality of life. topics_old_labeling_removed_in_final_script_only The conversation covers red/near-infrared light therapy, mitochondrial function, light absorption by water, sunlight vs LED spectra, circadian timing, retinal aging, and public health lighting strategies.

Mark Changizi

Why color cameras don’t capture color
reSee.it Podcast Summary
The speaker discusses the unique nature of human color vision, highlighting a 2000 discovery that our sensitivity to wavelengths at 540 and 560 nanometers is specifically optimized for perceiving emotions on bare skin. This is achieved by detecting variations in blood oxygenation and concentration. Unlike generic spectrometers or cameras that uniformly sample the spectrum, our color vision is tailored to discern subtle red-green signals indicative of health and emotional state. Nakedness and primate color vision co-evolved, making color vision an empath sense.
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