130: How Blue Light at Night Disrupts Sleep, Perimenopause & Fat Loss with Heidi Sime & Thaddeus Owen

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% offIn this episode, you’ll discover:Why blue light blocking glasses for sleep actually workThe difference between yellow daytime lenses and orange nighttime lensesWhen to wear blue light blocking glasses for maximum benefitHow LED lighting creates unnatural blue spikesWhy artificial light at night is linked to diabetes, heart disease, obesity, and cancerHow circadian rhythm misalignment impacts fat loss and hormone balanceWhy melatonin is critical for cellular repair and anti-agingThe connection between breastfeeding, melatonin, and nighttime phone useWhy teenagers fall asleep earlier under red lightingHow to improve sleep without adding another supplementWe talk about:00:00 Why light is a missing piece in hormone health04:00 Thaddeus’ journey from insomnia to circadian science08:00 Blue light explained in simple terms12:00 Yellow vs orange lenses16:00 Women, cortisol, and hormone sensitivity20:00 When to switch to nighttime glasses24:00 Red light, amber light, and home lighting swaps28:00 Breastfeeding and melatonin32:00 Artificial light and chronic disease research36:00 Light as a nutrient40:00 Where to startConnect with Heidi and ThaddeusInstagram: www.instagram.com/dreamwalkerz.ai Facebook: https://www.facebook.com/primalhacker Website: https://dreamwalkerz.ai/ Connect with meInstagram: https://www.instagram.com/lizzieens_wellness YouTube: https://www.youtube.com/@lizzieenswellness TikTok: https://www.tiktok.com/@lizzieh_wellness Website: https://undietyou.com/ #BlueLightBlockingGlasses #CircadianRhythm #SleepOptimization #HormoneBalance #MelatoninSupport #PerimenopauseHealth #CortisolHealing #ArtificialLight #BiohackingForWomen #FunctionalHealth #NaturalSleep #RedLightTherapy #MetabolicHealth #WomensHormones #LizzieEnsShow