How Light Exposure Affects Egg Quality and Fertility

If you've been trying to improve your egg quality, you've probably heard me talk about sleep. Sleep is one of the foundations I come back to again and again because it affects blood sugar, inflammation, mitochondrial health, hormone signaling, nervous system regulation, and the environment your eggs are developing in. But there's another piece of sleep and fertility that gets far less attention: light and darkness. Your ovaries have a circadian clock, and that clock is heavily influenced by light exposure. Bright lights at night, screens in bed, and light coming through your bedroom window can all affect the signals that tell your body it's nighttime. Darkness helps support melatonin production, and melatonin isn't just a sleep hormone. It's also found inside the ovarian follicles surrounding developing eggs, where it helps protect them from oxidative stress. In this episode, I'm breaking down why your ovaries care about darkness, how circadian rhythm influences reproductive health, what the research tells us about melatonin and egg quality, and five practical changes you can start making tonight. "The goal isn't to replace darkness with a pill." - Brooke Boskovich. In This Episode, You'll Learn: Why your ovaries have their own circadian clock How light exposure influences reproductive hormones and ovulation Why darkness and melatonin matter for egg quality How oxidative stress affects developing eggs What research shows about sleep, circadian disruption, and IVF outcomes Five practical ways to improve your light exposure and circadian rhythm When melatonin supplementation may support fertility and IVF Why egg quality depends on more than supplements alone Why the 90 days before ovulation can be such an important window for fertility support — Connect & Learn More: Support the show: Please leave me a comment or a review wherever you listen to this podcast Subscribe on Apple Podcasts: apple.co/4faTvVq Learn more about this episode: thefertilitydietitian.health Contact me: brooke@thefertilitydietitian.health Check out my Digital Store: thefertilitydietitian.health/shop Facebook: facebook.com/BrookeTheFertilityDietitian Instagram: instagram.com/the.fertility.dietitian YouTube: youtube.com/@TheFertilityDietitianPodcast