Artificial Light Is Changing Your Biology — How to Protect Yourself | Matt Maruca episode artwork

EPISODE · Aug 25, 2026 · 1H 8M

Artificial Light Is Changing Your Biology — How to Protect Yourself | Matt Maruca

from Dr Espen Podcast · host Dr Espen Wold-Jensen

What If the Light Around You Is Making You Sick?We think about health in terms of food, exercise and sleep but what about the light we're exposed to every day?Matt Maruca shares his journey from childhood health struggles and extreme dieting to discovering what he believes is one of the most overlooked influences on human health: light.He explains how artificial light may affect our circadian rhythm, mitochondria, hormones, sleep and mental wellbeing and why changing the way we experience light could change the way we live.About our guest:Matt Maruca is the founder and CEO of Ra Optics. A pioneer in circadian health and photobiology education, Matt has become a leading voice in the science of light. His work has been featured across major health platforms, and he regularly speaks at conferences worldwide about light's role in human optimization.📲Follow MattWebsite: https://raoptics.com/Instagram: https://www.instagram.com/thelightdiet/LinkedIn: https://ch.linkedin.com/in/matthew-marucaProtect your eyes from artificial blue light:Use Matt’s recommended Ra Optics blue-light-blocking lenses.Link: https://www.raoptics.com/DRESPENCode: DRESPEN📲Follow Dr EspenWebsite: https://drespen.com/Facebook: https://www.facebook.com/drespenwoldjensenInstagram: https://www.instagram.com/dr_espen/YouTube: https://www.youtube.com/@dr_espen💡Episode Highlights:00:00:00 - Episode Trailer00:04:52 - His Childhood Symptoms Were Trying to Tell Him Something00:08:43 - When Healthy Eating Became Unhealthy00:12:20 - The Discovery That Made Him Question Everything00:15:26 - What If Food Wasn’t the Real Problem?00:24:19 - Could Light Be Affecting Your Mental Health?00:29:50 - What If Your Body Isn’t Designed for Modern Light?00:35:18 - Why Humans May Have Needed Firelight00:39:49 - This Is When Artificial Light Started Changing Us00:41:38 - What Is Modern Light Actually Doing to Your Body?00:49:33 - How an Energy Crisis Changed the Light in Your Home00:52:32 - If Artificial Light Is the Problem, What Can We Do?00:53:42 - 3 Things You Can Change Tonight01:00:25 - Could These Glasses Change How Your Body Responds to Light?01:03:58 - The Simple Screen Hack You Can Use Tonight01:05:35 - If the World Were Listening, This Is What He’d Say

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Artificial Light Is Changing Your Biology — How to Protect Yourself | Matt Maruca

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