BiotiQuest® Gut Health & Probiotics Blog with Martha Carlin

Martha Carlin On Microbiome Science, Probiotics, & Personal Discovery

Martha Carlin | Sep 07, 2025 | podcast

In a compelling episode of the Finding Genius Podcast, Martha Carlin, founder of The BioCollective and BiotiQuest, shares her personal and professional journey into microbiome science, particularly its connection to Parkinson’s disease. Martha’s exploration began when her husband was diagnosed with Parkinson’s at age 44, prompting her to shift from a business career to pioneering microbiome research as a citizen scientist.

A Personal Journey Sparks Scientific Inquiry

Martha recounts the early signs of her husband’s condition: “I noticed he had lost facial expression... and a little tremor in his finger.” Inspired by Michael J. Fox’s story and driven by her analytical background, she began examining the evidence herself. She quickly realized that most Parkinson’s research focuses on symptom management rather than root causes. This gap led her to investigate environmental factors, diet, and eventually the microbiome.

Microbiome and Parkinson’s: A Complex Relationship

Since the landmark 2014 study linking gut bacteria to Parkinson’s, over 2,000 papers have explored this connection. Martha highlights key findings: “One of the organisms we’re looking at is sulfo vibrio, which produces an enzyme called uras that attacks good gut bacteria and contributes to severe constipation in Parkinson’s patients.” She also notes the role of Helicobacter pylori and small intestinal bacterial overgrowth (SIBO) in disrupting nutrient absorption and promoting neuroinflammation.

Martha emphasizes the importance of viewing Parkinson’s as a multifactorial syndrome influenced by lifestyle, environmental toxins, and microbiome health. “It’s our complicated lifestyle that’s contributing to the increase in these diseases,” she says. “To address that, we’ve got to address the terrain, the chemicals we’re exposed to, cleaning up our environment, cleaning up the food we’re eating, focusing on our microbiome health, restoring the good bacteria in the gut, and focusing on our oral health.”

The Glycocalyx: The Body’s Protective Sugar-Coated Barrier

A fascinating aspect of the conversation is the glycocalyx, a sugar-coated, fuzzy layer covering all cells, acting as a selective barrier. Martha explains, “It’s this intelligent structure... deciding what gets in and out. When it’s damaged, larger particles like endotoxins can cross into the bloodstream and cause inflammation.” This barrier’s integrity is crucial for immune defense and is influenced by microbiome health and environmental exposures.

Oral Health’s Impact on Neurodegenerative Diseases

Martha also discusses the oral microbiome’s role, sharing how her husband’s periodontal treatment helped reduce harmful bacteria linked to Alzheimer’s and possibly Parkinson’s. “We identified an oral pathogen called Porphyromonas gingivalis that has been correlated with Alzheimer’s,” she notes. She stresses the challenges Parkinson’s patients face with oral hygiene due to motor skill decline and advocates for specialized dental care.

Collaborative Research and Practical Interventions

The BioCollective’s work extends beyond research to practical solutions. Martha describes a recent interdisciplinary conference aimed at breaking down silos in Parkinson’s research. They are developing studies focused on relieving non-motor symptoms like constipation through probiotics and restoring the glycocalyx. She shares, “We know from a clinical trial that our sugar shift probiotic reduces serum endotoxins, helping to reduce toxic load.”

Additionally, Martha highlights emerging tools for assessing total toxic burden, which could personalize interventions. “It’s not one thing; it’s more like a syndrome with multiple factors,” she says.

Empowering Holistic Health Approaches

Martha’s insights underscore the need for holistic care that integrates microbiome science, environmental health, nutrition, and oral hygiene. Her journey from personal crisis to scientific advocacy exemplifies how curiosity and systems thinking can drive innovation in understanding complex diseases.

Where to Learn More

To follow Martha’s work and access educational resources, visit:

Recommended Reading

  • Missing Microbes by Martin Blaser
  • The Psychobiotic Revolution by Scott Anderson et al.
  • Brain Maker by David Perlmutter
  • The Dental Diet by Steven Lin

This episode offers a profound look at how the microbiome and environmental factors intertwine in Parkinson’s disease, highlighting promising avenues for research and care. Martha Carlin’s work inspires a shift toward comprehensive, terrain-focused health strategies that could benefit many facing chronic illnesses.

 

With gratitude,

Martha Carlin photo Martha Carlin, is a “Citizen Scientist”, systems thinker, wife of Parkinson’s warrior, John Carlin, and founder of The BioCollective , a microbiome company expanding the reach of science and BiotiQuest, the first of it’s kind probiotic line. Since John’s diagnosis in 2002, Martha began learning the science of agriculture, nutrition, environment, infectious disease, Parkinson’s pathology and much more. In 2014, when the first research was published showing a connection between the gut bacteria and the two phenotypes of Parkinson’s, Martha quit her former career as a business turnaround expert and founded The BioCollective to accelerate the discovery of the impact of gut health on all human disease. Martha was a speaker at the White House 2016 Microbiome Initiative launch, challenging the scientific community to “think in a broader context”. Her systems thinking background and experience has led to collaborations across the scientific spectrum from neuroscience to engineering to infectious disease. She is a respected out of the box problem solver in the microbiome field and brings a unique perspective to helping others understand the connections from the soil to the food to our guts and our brains.

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