Informed Life Radio: Never Miss Another Sunrise: Circadian Fitness with Zaid K. Dahhaj

(September 25, 2026)

Ep. 385:

What if sleep, metabolism, energy, hormone signaling, and even how our bodies respond to food all have something fundamental in common: light and timing?

Circadian biology educator Zaid K. Dahhaj joins us to explain why circadian fitness is foundational to human health—and why one of his most important recommendations is simple: never miss another sunrise. We look at what happens when unfiltered sunrise light reaches the eyes and how our light environment helps synchronize clocks throughout the body.

We also tackle real life. What if you have to be at work before sunrise? What if your job keeps you awake at night? And what happens in places such as Alaska, where winter may bring only a few hours of daylight while summer brings almost none of the darkness our circadian system expects?

Zaid also shares practical ways to strengthen the signals our bodies use to distinguish day from night, including daytime light exposure, darkness at night, sleep and wake timing, and meal timing. 

The 80/20 Circadian Course: https://stan.store/zaidkdahhaj/p/get-the-8020-circadian-course–$197 through November 1 with $52 discount code FALLRESET.

Website: https://www.zaidkdahhaj.com/
The Circadian Classroom: https://zaidkdahhaj.substack.com/
Course, Substack & Coaching: https://stan.store/zaidkdahhaj
Twitter/X: https://x.com/zaidkdahhaj
Instagram: https://instagram.com/zaidkdahhaj

hooga Red Book Light: https://link.amazon/B0dLywV6j

Beeswax candles: https://link.amazon/B03xb4zPg

Ra Optics glasses:  https://link.amazon/B0dsFSy3t

Ra Optics Lumio LEDs:  https://raoptics.com/collections/light-bulbs

Midwest Red Light Therapy: https://midwestredlighttherapy.com/

Author John Ott: https://link.amazon/B05Nl6F0n

Chroma Lighting: https://getchroma.co./

In Defense of Sunlight, by Rowan Jacobsen: https://www.amazon.com/Defense-Sunlight-Surprising-Science-Exposure-ebook/dp/B0FX5SS1XW/?tag=informedcho01-20

Mitolux light devices: https://mitolux.com/

Chromalux bulbs: https://link.amazon/B0biKzJqf

My Circadian app: https://apps.apple.com/us/app/mycircadianapp/id6538168795

Strainless Lighting: use code ZAID: https://strainlesslighting.com/#

1,000 Bulbs: https://www.1000bulbs.com/fil/categories/incandescent-light-bulbs

*The opinions expressed by the hosts and guests in this show are not necessarily the views of Children’s Health Defense.