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Just fifteen to thirty minutes of midday sun allows your body to produce adequate vitamin d levels. This is gonna boost your immunity, strengthen your bones, and even reduce inflammation. Getting early morning sunlight in your eyes without sunglasses is one of the best ways to reset your internal clock. It tells your body it's daylight, boosts cortisol levels in a healthy way, and allows for improved melatonin production later on. Sunlight also triggers serotonin production. This is gonna help you feel calm, focused, and happy. And for your heart, sunlight helps your skin to produce nitric oxide, and this is gonna lower blood pressure.

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Wearing glasses blocks harmful UV light, which we avoid indoors and in cars. UV light from the sun activates vitamin D, lowers blood pressure, benefits the heart, arteries, and cholesterol, aids in weight loss, helps with skin conditions and diseases, and boosts melatonin for better sleep. The sun is demonized to support industries selling supplements and other products.

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Sunlight is a powerful medicine. Fifteen to thirty minutes of midday sun boosts immunity, strengthens bones, and reduces inflammation by producing adequate vitamin D levels. Early morning sunlight without sunglasses resets your internal clock, boosts cortisol, and improves melatonin production. Evening sunlight allows your body to wind down for restful sleep. Sunlight triggers serotonin production for calm, focus, and happiness. For heart health, sunlight helps skin produce nitric oxide, lowering blood pressure. Sunlight supports metabolism and increases fat burn. Morning sunlight reduces cravings and controls appetite. Light exposure activates T cells, helping the body fight off illness and infection. Morning and evening sun can fuel your health.

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The number one anti-aging therapy is sunlight, not Botox or collagen. Regular, sufficient sun exposure provides vitamin D and nitric oxide, which aids circulation. Over 50% of sun rays provide infrared, supporting the mitochondria and offering antioxidant effects. Sunlight naturally helps increase testosterone, estrogen, and brain-derived neurotrophic factor.

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- "Bodies make about one thousand IU of vitamin d every six to ten minutes in direct sunlight." - "That means if you can get outside for fifteen to thirty minutes every day, you have no need for a vitamin d supplement because your body will use the fat within your body to create more of the hormone vitamin d." - "One of the reasons I recommend people stay away from vitamin d supplements is because a lot of supplements use vitamin d two. And our bodies really would prefer to use vitamin d three." - "Another hormone that the sun will benefit is melatonin." - "When you give your body sunlight during the day, it helps teach your circadian rhythm when daytime is and when nighttime is and more importantly, when to produce melatonin for bed." - "If not, get outside and follow me for more."

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Just fifteen to thirty minutes of midday sun allows your body to produce adequate vitamin d levels. It tells your body it's daylight, boosts cortisol levels in a healthy way, and allows for improved melatonin production later on. Sunlight also triggers serotonin production. This is gonna help you feel calm, focused, and happy. And for your heart, sunlight helps your skin to produce nitric oxide, and this is gonna lower blood pressure. Believe it or not, sunlight can also help support your metabolism and increase your fat burn. Sunlight, especially in the morning, has been shown to help reduce cravings and control your overall appetite. Light exposure activates your t cells, and this can be a powerful support to help your body fight off illness and infection. The right light at the right time of day can fuel your health, especially morning and evening sun.

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Exposing yourself to sunlight can naturally heal your body, but many people are unaware of this phenomenon. Unfortunately, we have become afraid of the sun due to the introduction of sunglasses, which have been linked to an increase in cancer cases. Sunglasses filter out certain rays of the sun that are essential for our bodies. The pineal gland, which receives sunlight, needs the full spectrum of light to function properly. Our lens breaks down white light into seven colors, which are encoded with chemicals in the pineal gland and then distributed to different parts of the body for basic metabolic processes.

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Just fifteen to thirty minutes of midday sun allows your body to produce adequate vitamin d levels. This is gonna boost your immunity, strengthen your bones, and even reduce inflammation. Getting early morning sunlight in your eyes without sunglasses is one of the best ways to reset your internal clock. It tells your body it's daylight, boosts cortisol levels in a healthy way, and allows for improved melatonin production later on. Sunlight also triggers serotonin production. And for your heart, sunlight helps your skin to produce nitric oxide, and this is gonna lower blood pressure. Sunlight, especially in the morning, has been shown to help reduce cravings and control your overall appetite. Light exposure activates your t cells, and this can be a powerful support to help your body fight off illness and infection. The right light at the right time of day can fuel your health, especially morning and evening sun.

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Number one, early morning sunlight contains a very specific wavelength that stimulates a specific area in your brain that basically reboots your circadian rhythm and resets your day night cycle. Number two, morning sunlight stimulates cortisol release and it stimulates it at the right time. Cortisol is the wake up hormone. Number three, when you get low angle sunlight into your eyes, the retina stimulates your brain to release serotonin and dopamine, which are the feel good neurotransmitters. This improves your overall mood, your level of alertness, as well as your overall cognitive function. So by simply getting up early and watching the sunrise, you can support your body's natural rhythms, improve your mood, and enhance your overall cognitive function.

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Getting early morning, low-angle sunlight in your eyes is important for three reasons. First, specific wavelengths reboot your circadian rhythm, improving sleep, alertness, and mood. Second, morning sunlight stimulates cortisol release at the right time, improving metabolism, immune function, and alertness. Third, sunlight stimulates the release of serotonin and dopamine, improving mood, alertness, and cognitive function. Getting up early to watch the sunrise supports natural rhythms, improves mood, and enhances cognitive function.

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Getting sunlight in your eyes first thing in the morning is vital to mental and physical health. It is perhaps the most important thing to promote metabolic well-being, hormone system functioning, and positive mental health. The protocol is to get outdoors, ideally without sunglasses if safe, even with cloud cover. More light information comes through cloud cover than from a bright indoor bulb, making getting outdoors absolutely key.

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Most people, including children, spend too much time indoors. Sunlight is essential for converting cholesterol in your skin into vitamin D, which is vital for health. When you eat fruits and vegetables, your stomach extracts nutrients, and vitamin K2 guides vitamin D3 to your bones and teeth. Instead of relying on vitamin D supplements, get outside in the sun, especially during winter. Nature provides everything we need; it's all found in the seeds of fruits and trees. Herbs can serve as medicine, and the sun is a vital resource for our well-being. Embrace the outdoors and the natural world around you.

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Humans ask how long they can be in the sun because they've been brainwashed to fear it, unlike animals. The sun provides UVB, which has two main functions: manufacturing vitamin D, only one of thousands of photoproducts, and triggering warning signs when it's time to get out of the sun. The feeling of warmth indicates it's time for shade. Sunscreen prevents UVB from doing its job, causing people to stay in the sun too long and be exposed to damaging parts of the solar spectrum. Listening to your skin and avoiding sunscreen allows nature to guide sun exposure.

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Exposing yourself to natural sunlight in the morning, specifically the first 45 minutes, can have a positive impact on your health. This "first light" contains no damaging UVA or UVB rays, but still provides vitamin D3 and helps regulate cortisol levels. It is the best way to reset your circadian rhythm. By combining this with grounding and breath work, you can achieve similar benefits to expensive equipment like Dana White did.

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Early morning sunlight is important because the natural blue light is received by the suprachiasmatic nucleus in the brain. The suprachiasmatic nucleus is the primary circadian pacemaker, signaling to the body that it's daytime and time to be awake. To receive the benefits, get at least fifteen to thirty minutes of sunlight exposure in the morning, such as during a walk or commute, without staring directly at the sun. This morning exposure can improve sleep at night.

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UV light lowers blood pressure. UV light increases the efficiency of the heart. UV light improves EKG. UV light balances cholesterol. UV light assists in weight loss. UV light is a treatment for skin conditions. UV light is also an effective treatment for many disorders. Going back to light therapy of 1933 in Germany where they used to heal people with light, then you go UV light increases the level of hormones. People suffering from low testosterone or altered estrogen sitting in the sun. Then we go UV light activates important skin skin hormones such as vitamin d, natural sources. Now why do they tell people to stay out of the sun? Because all these industries exist to keep making money on the people. And if you tell people that UV is toxic and you better stay out of that sun, well, then these industries continue to keep just going about. And that's what we see because these industries have been going on for a long time. Hundred about a hundred years of being told lies. And all we're doing, debunking it one step at a time.

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Vitamin D deficiency increases the risk of cancer, and taking vitamin D can prevent cancer. It is also effective for treating depression and important for the immune system. Big pharma dislikes vitamin D because it reduces the risk of many diseases. Studies on vitamin D are often designed to fail using low doses. Higher doses are recommended for those with chronic inflammation or autoimmune diseases. The sun is beneficial and avoiding it increases the risk of dying. Sunshine also prevents cancer, including melanoma. Spending about 30 minutes in the sun without sunscreen is recommended, as sunscreen may increase the risk of melanoma.

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Sunlight deficiency is claimed to be the biggest cause of disease, with studies suggesting avoiding the sun is as risky as smoking. Insufficient sun exposure is allegedly responsible for almost 400,000 deaths per year and an increased incidence of almost every disease. Vitamin D is described as critical for dopamine synthesis, mood, weight loss, immune function, and glucose metabolism. Vitamin D supplementation is associated with a claimed 40% lower rate of dementia, and 4,000 IU of vitamin D reportedly boosted testosterone 40% in one study. Beyond vitamin D, the sun purportedly shrinks fat cells and improves the gut microbiome. Red and near-infrared light from the sun is said to structure water in mitochondria, boosting energy production and setting the circadian rhythm.

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Ultraviolet light is portrayed as dangerous and something to avoid at all costs. People live and work in environments blocking UV light through glasses, contacts, sunglasses, cars, offices, and artificial lighting. When exposed to the sun, sunscreen is applied, further blocking UV light. However, UV light activates vitamin D, negating the need for synthetic supplements. UV light also helps lower blood pressure and benefits the heart, arteries, and cholesterol. Additional benefits include assisting in weight loss, helping with skin conditions and other diseases, and boosting melatonin levels for better sleep. The claim is that an industry has been created to promote sun avoidance to benefit other industries.

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The number one antiaging therapy is sunlight, not Botox, collagen, or anti-wrinkle creams. Regular, sufficient sun exposure provides vitamin D and nitric oxide, which aids circulation. Over 50% of sun rays provide infrared, supporting the mitochondria and producing antioxidant effects. Sunlight also naturally increases testosterone, estrogen, and brain-derived neurotrophic factor.

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Sunlight is a powerful medicine. Fifteen to thirty minutes of midday sun allows your body to produce adequate vitamin D, boosting immunity, strengthening bones, and reducing inflammation. Early morning sunlight in your eyes, without sunglasses, resets your internal clock, boosts cortisol, and improves melatonin production. Evening sunlight allows your body to wind down for restful sleep. Sunlight triggers serotonin production, helping you feel calm, focused, and happy. For your heart, sunlight helps your skin produce nitric oxide, lowering blood pressure. Sunlight supports metabolism and increases fat burn. Morning sunlight reduces cravings and controls appetite. Light exposure activates T cells, supporting your body to fight off illness and infection. The right light at the right time of day can fuel your health.

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The sun is beneficial for overall health and well-being because it allows you to absorb vitamin D, which is especially good for your skin. For dry, inflamed skin problems like eczema and dermatitis, get at least twenty minutes of sun exposure. The amount of time needed depends on how much skin is exposed. If only a small amount of skin is exposed, like hands and face, you might need thirty minutes. If 50% of your body is exposed, ten minutes might be enough. Be mindful of sunburn and take care of yourself with vitamin D by getting some sunshine.

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Wearing glasses blocks harmful UV light, but UV light has benefits like activating vitamin D, lowering blood pressure, improving heart health, aiding weight loss, treating skin conditions, boosting melatonin for better sleep. Avoiding the sun supports industries selling supplements, skincare, and more.

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.

Dhru Purohit Show

The One Overlooked Factor That Predicts Heart Disease, Cancer & Dementia | Dr. Roger Seheult

Guests: Dr. Roger Seheult

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The episode centers on a broad claim: light, especially infrared light from sunlight, plays a foundational role in human health by energizing mitochondria and shaping inflammatory responses. The guest explains that light is a continuum beyond visible colors, with infrared capable of penetrating tissues and even bone, thereby affecting cells throughout the body. He references randomized trials showing that infrared exposure can enhance metabolism, increase mitochondrial energy production, and modulate cytokine activity, while describing how visible light supports circadian rhythms and mood. A key thread is that many chronic diseases—cardiovascular disease, cancer, dementia, and inflammatory conditions—are linked to mitochondrial dysfunction, so improving cellular energy through light could influence the trajectory of aging and disease. The discussion also weaves in anecdotal clinical experiences from the ICU where outdoor sunlight or infrared exposure appeared to hasten recovery, and it contrasts those experiences with interventions that rely on dietary supplements alone. The guest emphasizes a systems view of health, arguing that modern life has reduced natural light exposure, and that reintroducing sunlight, even in modest daily doses, can activate multiple “laws of health” that promote resilience: nutrition, exercise, fresh air, rest, temperance, and spiritual balance. He notes that the sun provides a full spectrum, whereas indoor lighting—especially LEDs—often lacks infrared content, which may undermine energy production in tissues. Throughout the conversation, they discuss practical strategies such as 15-minute outdoor exposures daily, using light therapy lamps when outdoors isn’t feasible, and selecting lighting that preserves broader spectral content in indoor environments. The overarching message is that sunlight is a powerful, low-cost, accessible determinant of health, with benefits observed across infectious and chronic diseases and potential implications for public health and personal behavior alike.