If you are struggling with poor sleep, hormone imbalance, perimenopause symptoms, brain fog, anxiety, or stubborn fatigue, this conversation may change how you think about health.

In Episode 130, Lizzie sits down with Heidi Sime and Thaddeus Owen, founders of Dream Walkers, to unpack the science behind blue light exposure, circadian rhythm disruption, melatonin suppression, and cortisol overload.

Thaddeus shares how 16 years of insomnia and anxiety led him from pharmaceutical engineering into studying light as a biological signal. What he discovered is simple but powerful. Artificial light at night, especially blue light from LED bulbs, phones, laptops, and overhead lighting, suppresses melatonin, increases cortisol, and disrupts deep restorative sleep.

Heidi explains why women are particularly sensitive to artificial light stress. Female hormones are more vulnerable to cortisol spikes, which makes modern light exposure especially disruptive for women navigating perimenopause, burnout, and chronic stress.

Dream Walkers Blue Light Blocking Glasses and Circadian Lighting: Use code LIZZIE15 for 15% off

In this episode, you’ll discover:

Why blue light blocking glasses for sleep actually work
The difference between yellow daytime lenses and orange nighttime lenses
When to wear blue light blocking glasses for maximum benefit
How LED lighting creates unnatural blue spikes
Why artificial light at night is linked to diabetes, heart disease, obesity, and cancer
How circadian rhythm misalignment impacts fat loss and hormone balance
Why melatonin is critical for cellular repair and anti-aging
The connection between breastfeeding, melatonin, and nighttime phone use
Why teenagers fall asleep earlier under red lighting
How to improve sleep without adding another supplement

We talk about:

00:00 Why light is a missing piece in hormone health
04:00 Thaddeus’ journey from insomnia to circadian science
08:00 Blue light explained in simple terms
12:00 Yellow vs orange lenses
16:00 Women, cortisol, and hormone sensitivity
20:00 When to switch to nighttime glasses
24:00 Red light, amber light, and home lighting swaps
28:00 Breastfeeding and melatonin
32:00 Artificial light and chronic disease research
36:00 Light as a nutrient
40:00 Where to start

Connect with Heidi and Thaddeus

Instagram: www.instagram.com/dreamwalkerz.ai
Facebook: https://www.facebook.com/primalhacker
Website: https://dreamwalkerz.ai/

Connect with me

Instagram: https://www.instagram.com/lizzieens_wellness
YouTube: https://www.youtube.com/@lizzieenswellness
TikTok: https://www.tiktok.com/@lizzieh_wellness
Website: https://undietyou.com/

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