Why Red Light Does Not Disrupt Circadian Rhythm

What if the problem is not light itself but the type of light you are using after sunset?

In this episode of Primalhacker Radio, Heidi sits down with Thaddeus Owen to unpack one of the most misunderstood topics in modern wellness: artificial light at night and how it impacts sleep, hormones, and circadian rhythm.

We dive deep into why red and amber light behave differently in the body, how blue light interferes with melatonin production, and why most people are unknowingly sabotaging their sleep every single night through common lighting choices in their home.

If you care about deep sleep, hormone balance, and long term health, this conversation will change how you think about light forever.

In This Episode We Cover

• Why artificial light at night is called ALAN in the scientific literature• How blue light suppresses melatonin and disrupts circadian rhythm• Why most homes are not set up for nighttime biology• The difference between light intensity and light spectrum• How red light supports nighttime physiology without disrupting sleep• Why blue light blocking glasses can be a powerful tool after sunset• Simple changes you can make tonight to improve sleep quality

Key Takeaways

• Most people never change their lighting environment at night• Blue light is the primary disruptor of melatonin production• Circadian rhythm is highly sensitive to light exposure• Intensity and spectrum both matter for sleep quality• Awareness alone can dramatically improve sleep hygiene• Creating a sleep friendly environment is foundational to health

Get full access to Primalhacker’s Substack at primalhackerofficial.substack.com/subscribe