Summary
Ben Greenfield covers are blue light-blocking glasses really a scam?! (& what to look for in a healthy lightbulb) with matt maruca. Key topics include performance optimization strategies backed by science; practical biohacking tools and technologies for health optimization; key longevity markers and interventions to optimize healthspan.
Key Points
- Performance optimization strategies backed by science
- Practical biohacking tools and technologies for health optimization
- Key longevity markers and interventions to optimize healthspan
Key Moments
Matt Maruca on how blue light disrupts hormones
Ben Greenfield and Matt Maruca of Ra Optics discuss how artificial blue light disrupts circadian rhythm and hormonal balance.
"Blue light blockers, circadian rhythmicity, melatonin. Matt Maruka from Ra Optics. He is the GOAT."
Good blue light peaks at 480nm for circadian cues
Blue light at 460-500nm signals wakefulness and cortisol production, but becomes harmful at night by suppressing melatonin.
"The good blue light has a peak around 480 nanometers. This good blue light is the part that signals to our brain it's time to wake up, produce cortisol."
Blue light blocking glasses are not debunked
Greenfield and Maruca analyze a viral documentary claiming blue light glasses are a scam, finding its evidence insufficient.
"There's not necessarily enough evidence. It's not statistically significant enough to debunk the effects of blue light blocking."
Blue light exposure goes beyond just screens
Most blue light studies only measure screen exposure but ignore overhead lighting, airports, and malls, which are major sources.
"Wear a pair of blue light blocking glasses with the red lens the next time you're watching a movie at night and you tell me if you get sleepy halfway through."
