Summary
Ben Greenfield interviews Raleigh Duncan and Andy Pace from Clearlight Saunas about the science and practical use of infrared saunas. The conversation covers the key differences between near-infrared and far-infrared wavelengths, how each affects the body differently, and why full-spectrum infrared saunas combine both for maximum benefit. They discuss EMF concerns in detail, explaining why most infrared saunas produce dangerous electromagnetic field levels and how low-EMF heater technology works. The episode dives deep into the physiological mechanisms of infrared sauna therapy, including vasodilation, nitric oxide release, passive cardiovascular conditioning, detoxification pathways, and the production of heat shock proteins for muscle maintenance. Greenfield shares his personal sauna protocol including niacin supplementation, mineral-infused water, essential oil aromatherapy, and yoga routines. They also discuss research on weight loss (4% body fat reduction in 16 weeks), HRV improvement, erythropoietin production rivaling illegal EPO injections when combined with post-exercise sauna, and the potential for testosterone boosting through near-infrared light exposure.
Key Points
- Near-infrared light is absorbed by mitochondria via cytochrome c oxidase, boosting cellular energy production; far-infrared raises core body temperature and induces sweating for detox
- Full-spectrum infrared saunas combine near and far infrared for both cellular-level therapy and whole-body heating benefits
- Low-EMF saunas use carbon-based heaters with ELF and EMF cancellation, keeping levels near zero at seated positions vs. 100+ milligauss in standard saunas
- Detoxification works through vasodilation that mobilizes toxins from fat cells, eliminating them via sweat, liver, urine, feces, and exhalation
- Niacin supplementation before sauna enhances detox and was used successfully with Gulf War veterans and 9/11 first responders
- Post-exercise sauna for 30-40 minutes stimulates erythropoietin production comparable to illegal EPO injections used by Tour de France riders
- Heat shock proteins produced in sauna help maintain muscle mass during injury or periods without exercise
- A Binghamton University study found 4% body fat loss in 16 weeks from sauna use alone, with afternoon sessions being twice as effective
Key Moments
Near-infrared vs far-infrared and how they affect the body
Explains the key distinction between near-infrared (absorbed by mitochondria via cytochrome c oxidase for cellular energy) and far-infrared (raises core body temperature for sweating and detox). Full-spectrum saunas combine both.
"It's good for your skin. So it enhances the benefits of the far infrared."
Heat shock proteins help maintain muscle during injury
Discussion of Dr. Rhonda Patrick's research on heat shock proteins, which induce a hormetic response similar to weight lifting. Sauna can decrease muscle loss during injury by maintaining these proteins, making it a useful hack when you cannot exercise.
"you can maintain muscle mass in periods of time by going in something like a sauna, even if you're not working out"
Post-exercise sauna produces EPO comparable to illegal doping
Studies show that 30-40 minutes of sauna after exercise stimulates erythropoietin production at levels comparable to illegal EPO injections used by Tour de France riders. The effects disappear faster than altitude training but match its performance benefits.
"it actually simulates the same amount of erythropoietin production that you'd get with the illegal use of EPO injections that Tour de France riders would use"
Weight loss study showing 4% body fat reduction
A Binghamton University study using Clearlight saunas found participants lost 4% body fat in 16 weeks. A follow-up found that afternoon sauna sessions (after 3 PM) achieved the same results in half the time, attributed to lowered cortisol and raised HGH levels.
"people lost about 4% body fat in 16 weeks. But the part they found significant was the people that use the sauna later in the day lost more body fat"
Sauna detoxification pathways and niacin synergy
Raleigh explains how infrared sauna mobilizes toxins through vasodilation, which are then eliminated via sweat, liver, urine, feces, and exhalation. Niacin supplementation works synergistically with infrared, and was validated in studies with Gulf War veterans and 9/11 first responders.
"niacin has been used to help the body to flush out the toxins, and it does that same action. They use niacin to great success with saunas for Gulf War veterans, for 9-11 first responders"
