『Sunlight Matters』のカバーアート

Sunlight Matters

Sunlight Matters

著者： Dave Wallace
無料で聴く

Welcome to Sunlight Matters, the podcast that illuminates the incredible power of the sun and its impact on our health, well-being, and way of life.


From its essential role in vitamin D production and mental health to its influence on architecture, urban planning, and sustainability, the sun shapes our world in ways we’re only beginning to understand.


In each episode, podcast host Dave Wallace will chat with experts—from scientists and health professionals to designers and outdoor enthusiasts—to explore why sunlight isn’t just a backdrop to our lives but a force that shapes everything we do. So step into the light because here, Sunlight Matters.


Photo of Sun @Andrew McCarthy Cosmicbackground.io

© 2026 Sunlight Matters 衛生・健康的な生活
エピソード
  • The Light Effect: Sunlight, Depression, Mental Health and Jet Lag

    The Light Effect: Sunlight, Depression, Mental Health and Jet Lag
    2026/09/10

    In this episode of Sunlight Matters, Dave speaks with Professor Sean Cain, a leading researcher in circadian rhythms, light and mental health. His research points to a striking pattern: brighter days are associated with a lower risk of depression, while greater exposure to light at night is associated with a higher risk.

    Drawing on data from nearly 89,000 people, Sean explains why the timing of light matters as much as its brightness. He also shares remarkable early results from a simple intervention involving brighter days and dimmer evenings, which helped participants move from severe to mild depression in just four weeks.

    The conversation explores why depression may genuinely feel like darkness; how antidepressants could change our sensitivity to light; and why modern life leaves us spending our days in dim indoor “caves”, followed by nights bathed in bright, blue-enriched light.

    Dave and Sean also put the MiEye wearable light sensor to the test, uncover the near-infrared benefits of old windows, and challenge one of the most common pieces of jet-lag advice: getting outside as soon as you land.

    Because when it comes to light, the right advice at the wrong time can make things worse.

    In this episode:

    • Why light at night may increase the risk of depression
    • How bright daytime light strengthens the body’s circadian rhythms
    • The fascinating connection between depression and metaphors of darkness
    • Why antidepressants may alter the way the circadian system responds to light
    • How a simple home-lighting intervention produced potentially life-changing results
    • Why morning light matters — but missing sunrise does not mean you have missed your chance
    • What nearly 89,000 UK Biobank participants revealed about light and mental health
    • How MiEye measures the biological effects of visible and near-infrared light
    • Why modern windows and LEDs may be changing our light environment
    • How citizen science could transform our understanding of light and health
    • Why “get natural light when you land” can be terrible jet-lag advice
    • How the time of your flight could determine how badly jet lag affects you

    This is a conversation that may permanently change how you think about the light around you — not simply as something that allows us to see, but as a fundamental biological signal telling every part of the body what time it is and what it should be doing.

    Sunlight Matters is a podcast exploring the role of the Sun in human health, architecture, cities, and everyday life.

    Through conversations with scientists, architects, and technologists, the series examines how natural light shapes our bodies, our buildings, and the way we live indoors.

    Hosted by Dave Wallace, Sunlight Matters asks a simple but overlooked question: what happens when we disconnect from the Sun?

    Because sunlight isn’t optional. It matters.

    Please do not forget to Like and Subscribe.

    続きを読む 一部表示
    55 分
  • Sunlight, Mental Health and the Magic of Morning with Kristen Gilbert

    Sunlight, Mental Health and the Magic of Morning with Kristen Gilbert
    2026/08/27
    What if sunlight is one of the most overlooked influences on our mental health?In this episode of Sunlight Matters, Dave speaks with Kristen, a registered occupational therapist, trauma practitioner and quantum biology health coach. Drawing on her clinical work in mental health and her own experience of improving her sleep and energy, Kristen explains why morning light, daytime outdoor exposure and darkness at night may all play an important role in supporting our circadian rhythm and emotional wellbeing.They discuss practical ways to build a healthier relationship with light, from stepping outside soon after waking and taking short outdoor breaks during the day to reducing artificial light in the evening.The conversation also explores the relationship between circadian disruption and conditions such as anxiety, depression, ADHD and bipolar disorder, including emerging research into dark therapy and blue-blocking glasses. Kristen describes why supporting people to get outdoors can be difficult when they are already struggling, and why small, achievable changes are often the best place to begin.But this episode is about more than biology. Dave and Kristen reflect on the joy of sunrise, the calming sound of birdsong and the unexpected encounters with wildlife that happen when we slow down and pay attention. Reconnecting with light, they argue, can also reconnect us with our bodies, the natural world and a sense of belonging.As Kristen puts it:“Mother Nature is always showing off. It’s just whether or not you’re paying attention.”In this episodeKristen’s work as an occupational therapist in mental healthHow her own experience of poor sleep led her to explore circadian healthWhy morning light is the foundation of her approachThe importance of darkness and reducing artificial light at nightResearch into dark therapy and blue-blocking glasses for bipolar maniaLight sensitivity, ADHD, dopamine and anxietyWhy getting outdoors throughout the day mattersThe different roles of morning light, UVA and UVBBuilding outdoor time into a busy working dayWhy modern indoor lifestyles can leave us disconnectedThe mental health benefits of nature, birdsong and moments of wonderHow small changes can help people rebuild a healthier daily rhythmChapter guide01:09 — Meet KristenKristen introduces her work in occupational therapy, trauma therapy and mental health.03:42 — A personal journey into circadian healthHow disrupted sleep during perimenopause led Kristen to explore morning light and daily rhythms.06:09 — Using light in mental health practicePractical ways Kristen encourages clients to spend more time outdoors.07:00 — Darkness, bipolar disorder and maniaA discussion of dark therapy, blue-blocking glasses and emerging clinical research.10:29 — Are some people more sensitive to light?Kristen explores light sensitivity, ADHD and the effects of artificial blue light.14:04 — Why one dose of morning light may not be enoughDave shares what he has learnt from tracking his light exposure throughout the day.16:25 — UVA, UVB and vitamin DThe changing spectrum of sunlight and the importance of regular outdoor exposure.24:53 — Why sunshine can feel so goodDave describes the profound sense of wellbeing he experiences after swimming and warming up in the sun.28:22 — The overlooked magic of sunriseWhy something so simple, free and widely available can still be difficult to incorporate into daily life.33:29 — Sunset, metabolism and anxietyThe relationship between light timing, sleep, cortisol and metabolic health.37:32 — Light, water and magnetismKristen explains the three pillars of quantum biology and the value of reconnecting with nature.39:04 — From sunlight to environmental connectionHow spending time outdoors can deepen our desire to protect the natural world.41:59 — Why birdsong can calm usDave and Kristen discuss the Merlin Bird ID app and the evolutionary significance of hearing birds.45:33 — Is circadian health about to become mainstream?Kristen explains why she believes our understanding of light and physiology is approaching a turning point.47:57 — Listening to the bodyThe episode concludes with a reflection on self-trust, belonging and honouring our natural desire for connection.Find out more about Kristen:Online: https://kristengilbert.ca/Instagram: www.instagram.com/sunhunter_cvYouTube: https://www.youtube.com/@Sunhunter_cv.Subscribe on your preferred podcast platform and visit shadowmap.org to learn more about sunlight analysis, solar exposure and designing spaces around natural light.This episode discusses personal experiences and emerging ideas about light and health. It is intended for general information and should not replace individual medical advice. People should follow appropriate clinical and public-health guidance, particularly in relation to mental health treatment, eye health, medication, sun exposure and skin-cancer prevention.Sunlight Matters is a podcast exploring the...
    続きを読む 一部表示
    54 分
  • Built for the Sun

    Built for the Sun
    2026/08/05
    What if better health begins not with another device, supplement or complicated routine, but with something far more fundamental: reconnecting with nature?In this episode of Sunlight Matters, Dave Wallace speaks with Nathan Siles, a biophysics specialist focused on foundational health. Nathan’s interest in the subject is deeply personal. Legally blind following retinoblastoma as a baby, he later faced another cancer diagnosis at 24. Those experiences led him to explore the relationship between light, environment and human biology.Nathan argues that sunlight is not simply a source of vitamin D. It is an environmental signal that helps regulate our circadian rhythm, hormones, mitochondrial function, mood and energy. Sunrise prepares the body for the day, while the timing and quality of the light we encounter can be as important as the amount we receive.The conversation also explores Nathan’s experience of living in Melbourne, where significant lifestyle changes and greater sun exposure initially failed to improve his vitamin D levels. After moving much closer to the equator, he says those levels doubled within three months. This raises a wider discussion about latitude, altitude, urban environments and the many factors that may affect how our bodies respond to sunlight.Nathan is sceptical of the increasingly complex wellness industry. While modern tools may have a place, he believes they are approximations of something nature already provides freely: sunlight, fresh air, contact with the Earth, natural food, movement and time in green spaces.As he puts it: “Nothing will replace the Sun.”In this episodeDave and Nathan discuss:Nathan’s experience of childhood cancer, blindness and a second cancer diagnosis at 24Why his health journey led him towards biophysics and foundational healthThe difference between merely being in the Sun and being biologically able to use its energyWhy sunrise acts as an important signal for the bodyThe influence of latitude, altitude and season on sunlight exposureThe relationship between light, mitochondria, dopamine and circadian rhythmsWhy changing your environment can sometimes be as important as changing your behaviourNathan’s concerns about artificial light, Wi-Fi and electromagnetic fieldsGrounding, cold exposure and reconnecting physically with natureWhy expensive wellness technology cannot fully reproduce the natural worldThe importance of food, movement, green space and everyday contact with the outdoorsHow simple environmental changes can form the foundations of a healthier lifeA central ideaThroughout the conversation, Nathan returns to one compelling principle:“You can’t get well in the same environment in which you became sick.”His message is not that modern technology has no value, but that it should not distract us from the biological foundations on which human health was built. We evolved with sunrise, darkness, seasonal change, natural landscapes and direct contact with the Earth. A century spent increasingly indoors does not erase billions of years of evolution.About Nathan SilesNathan Siles is a biophysics specialist whose work explores foundational health through the relationship between the body and its environment. His perspective brings together biophysics, biomechanics and psychological and spiritual wellbeing.Nathan is also a co-author of Biotra, written with chiropractor Nick Dawr and psychotherapist Ryan Baracloff.BioTra: An Approach to Healthy Living in a Modern World. A practical framework for understanding health through the lens of mitochondrial biology, circadian rhythms, light, water, nutrition and our relationship with the natural environment. https://biotra.com.auNathan is running an Immersion Session in MexicoBioTra Immersion, Tulum, Mexico (27 October to 1 November): A six-day, five-night educational experience designed to help people reconnect with nature while exploring mitochondrial biophysics, biomechanics, psychospiritual wellbeing, circadian health and the foundations of a nature-aligned life. https://biotra.com.au/immersionThe takeawayHealth has become an enormous and often bewildering marketplace. Yet Nathan’s advice is refreshingly simple: spend more time outside, see the morning light, move through green spaces, reduce unnecessary technological exposure and allow the natural world to do what it has always done.Nature is not an optional addition to human health. It is the foundation.This episode discusses personal experiences and health-related ideas that may not reflect established medical consensus. It is intended for general information and should not replace professional medical advice.Sunlight Matters is a podcast exploring the role of the Sun in human health, architecture, cities, and everyday life.Through conversations with scientists, architects, and technologists, the series examines how natural light shapes our bodies, our buildings, and the way we live indoors.Hosted by Dave Wallace, Sunlight Matters ...
    続きを読む 一部表示
    1 時間 2 分
adbl_web_anon_alc_button_suppression_t1
まだレビューはありません