What Doctors Aren't Talking About With Our Brains, Guts, & Parkinson's: Martha Carlin
by Kevin Danielson July 15, 2025
We've been told Parkinson's is just a dopamine problem. It’s not.
This week on the podcast, we’re joined by Martha Carlin—systems thinker, microbiome expert, and someone who has spent the last 20+ years trying to understanding the brain and the gut after her husband’s Parkinson's diagnosis in his 40's. ⠀ In Part 1 of this series, we go beyond what doctors are asking—and dig into what really matters for our brains: stress, the microbiome, mineral balance, and a newly discovered protective layer you’ve never heard of (but need to know about).
Gratitude isn’t just a feeling. It’s a signal. A practice. A form of internal nourishment. It reshapes how we show up—for ourselves, our relationships, and even our microbiome.
In this wide-ranging conversation, Dr. Brian Lenzkes welcomes microbiome researcher and entrepreneur Martha Carlin to explore how our inner ecosystem shapes metabolic, neurological, and emotional health.
Martha shares how she discovered the connection between gut bacteria and Parkinson’s symptoms, developed probiotics that significantly improved her husband’s condition, and is now working on therapies for Crohn’s disease and post-antibiotic gut restoration. She also reveals the hidden dangers of glyphosate, explains why the “magic bullet” approach fails for complex diseases, and discusses the future of microbiome medicine.
In this episode, we discuss the surprising link between gut health and Parkinson’s, how glyphosate impacts your body on a cellular level, the microbiome’s role in chronic disease, and so much more.