Obesity, Circadian Rhythms & Bluelight Toxicity with Matt Maruca


In this episode, Dr. Stephanie Estima and Matt Maruca discuss the impact of light on our natural rhythms, emphasizing the importance of sunlight and the consequences of an indoor lifestyle. They challenge misconceptions about the sun and explore the connection between light, health, and hormonal balance.

Join Dr. Stephanie on a dazzling journey through the world of light in this illuminating podcast episode. Together with Matt Maruca, CEO of Ra Optics, they dive into everything from the secrets of moonlight to the battle between sunscreen and sunlight. Discover how blue light toxicity from indoor living affects your hormones, drives obesity, and impairs detoxification, all while exploring the unexpected links between light, skin aging, appetite suppression, and even menstrual cycles. Tune in for a radiant conversation that shines a light on circadian misalignment and how to make things right.

Matt Maruca is the founder and CEO of Ra Optics, a company that teaches about the essential role that light plays in health, and develops advanced light therapy-based products. He founded Ra Optics after a decade-long personal health journey that ultimately led him to light. The discovery that we are ultimately beings of light has led him to a profound interest in the nature of consciousness and existence itself.


Go to https://raoptics.com/drstephanie and use code: DRSTEPHANIE to get 10% off all Ra Optics products.

Lux Light Meter Pro – https://apps.apple.com/app/lux-light-meter-pro/id1292598866

Sunscreen makers withdraw products found to contain cancer-causing substance – https://www.health.harvard.edu/staying-healthy/sunscreen-makers-withdraw-products-found-to-contain-cancer-causing-substance

Skin exposure to UVB light induces a skin-brain-gonad axis and sexual behavior – https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8411113/

Connect with Matt on:

Episode Overview:
0:00:01 Cells communicate with ultraviolet light and its paradoxical nature
0:03:15 Opening dialogue with guest on circadian and infradian misalignment
0:06:59 Understanding the concept of full spectrum light and its importance
0:10:10 The Power of Light in Evolution and Life
0:13:30 Understanding the Role of Blue Light and UV Light
0:19:17 The Disruption of Indoor Living and Lack of Blue Light
0:22:28 The Misconceptions and Dangers of Sunscreen
0:28:28 Sunscreen: Is it Really Necessary?
0:32:53 The Role of Melanocytes Stimulating Hormone (MSH) in Sun Protection
0:37:10 Harmful Chemicals and Seed Oils: A Cancer Connection
0:44:52 Sunning the Perineum: A Hormone Augmentation Technique?
0:46:05 The Fall of Clothing and the Nudist Perspective
0:54:02 Leptin Resistance and Disruption of Circadian Rhythm
1:00:06 Impact of Contact Lenses and Corrective Surgery on Vision
1:03:12 Epigenetic modification: Understanding the impact of genes on vision
1:06:29 Moonlight and its potential influence on menstrual cycles
1:11:30 The Influence of Outdoor Time on Menstrual Cycle Alignment
1:14:30 The Benefits of Blue Light Blocking Glasses
1:20:07 Using Red Lenses for Nighttime Protection


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I’m Dr. Stephanie

Part geek, part magic, and all the way passionate about being a well-lived woman.

I want to throw my grandkids in the air in my 70’s. I want to be squatting even more weight than I am now, and putting my OWN luggage in the overhead bin. Sound like weird goals? For me these are just some of the little things that represent a life well-lived.

My health is MY job – I’ll be damned if I rely on luck, ‘good genes’ or a cocktail of drugs that over promise and under deliver.

The Betty Body is my first book-baby, and a collection of what I’ve learned after thousands of clinical hours, hundreds of conversations with the world’s top experts, and most importantly…

This book is an outline of what took ME from “rock-bottom health” at 38, to being my own version of a Betty in my perimenopausal mid 40’s. A woman who is physically strong, full of energy, enjoys mental clarity, great sex and a joyful family life. Is it all roses? Of course not. But I have the stamina and tools to deal with the push and pull of life so that it doesn’t turn into chronic stress.

I want this for you too. Let’s go Bettys!