Alex Fergus - Light Therapy Insiders
My name is Alex Fergus, and I'm a health and technology geek providing in-depth, independent product reviews on the latest red light therapy devices. With over seven years of experience studying light therapy and having used and tested dozens of hundreds of light therapy products, you can be sure that I'll have a video to help you with your educational or product-buying needs. Test, review, compare, and study all things Red Light Therapy.
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Alex
Alex Fergus - Light Therapy Insiders
Red Light Therapy For Cognitive Performance EXCITING New Science
đď¸ Episode Overview
In this episode of Alex Fergus â Light Therapy Insiders, Bart Wolbers sits down with Sarah Turner, neuroscientist and founder of SARAH Thrive, to explore how red and nearâinfrared light therapy can be used not just to manage symptomsâbut to elevate cognition, gut health, mood, and overall human potential.
Rather than focusing solely on illness, Sarah makes a compelling case for thriving, discussing how strengthening mitochondria, reducing inflammation, and supporting the gutâbrain axis may unlock higher levels of brain performance and resilience.
đ Key Topics Discussed
Thriving vs. Surviving
Why modern health culture sets the bar too lowâand how light therapy may help people move beyond âsymptomâfreeâ toward peak cognitive and emotional performance.
Sarah Turnerâs Background
From pharmaceutical drugâdelivery devices to nutritional medicine, clinical neuroscience, and biohackingâand why photobiomodulation sits at the intersection of orthodox and alternative medicine.
The SARAH System Explained (Brain + Gut)
An overview of the SARAH headband and gut panel, including:
- Targeting the prefrontal cortex and cerebellum
- Why physical contact and pressure matter for brain light delivery
- Visible red + nearâinfrared wavelengths (630, 850, 940, 1070 nm)
Pulsing Frequencies & Brain States
How different pulse rates may influence calm, focus, memory, and meditation:
- 7.8 Hz (alpha / Schumann resonance)
- 40 Hz (gamma, cognition & neurodegeneration research)
- 100 Hz (meditation and altered states)
RealâWorld Outcomes & User Feedback
Insights from early users, including improvements in:
- Sleep quality and deep sleep percentage
- Brain fog, mood, and resilience
- Digestive comfort and gut health
The GutâBrain Connection
Why Sarah calls the gut the âfirst brain,â including:
- Neurotransmitter production in the gut
- Vagus nerve signaling
- Inflammation, microbiome health, and cognition
- Emerging science of photobiomics (light + bacteria)
How Red Light May Enhance Cognition
Key proposed mechanisms:
- Reduced neuroinflammation
- Increased blood flow via nitric oxide release
- Higher ATP production in neurons
- Improved waste clearance and glymphatic drainage during sleep
Sleep, HRV & Biohacker Metrics
What users tracking Oura Ring, WHOOP, Apple Health, and Garmin data are seeingâincluding temporary HRV dips followed by longâterm gains.
Consistency, Dosing & Hormetic Stress
Why light therapy works more like exercise than medicati
Thanks for listening!
Disclaimer: Information shared is not medical advice.
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