Reclaiming Your Microbiome: System Thinking, Soil Health, and Parkinson's Research
Martha Carlin
| Sep 17, 2026 |
podcast
Featured Insights from Martha Carlin on Boundless Body Radio
In a recent episode of Boundless Body Radio, host Casey Ruff sat down with Martha Carlin, founder of The Bio Collective and BiotiQuest®. Driven by her system-thinking background in business auditing and turnaround, Martha turned her focus to microbiome science after her husband, John, received a young-onset Parkinson’s disease diagnosis in 2002. What began as a personal journey to understand root causes has evolved into groundbreaking research on how soil health, environmental factors, and gut microbes interact.
The Connection Between System Thinking and Health
When John was diagnosed with Parkinson’s at age 44, Martha applied her professional training in system flow review to human biology. In auditing, every process is mapped to find breaks or risks in a system. Applying that framework to health led her to examine daily inputs—specifically diet, lifestyle, and environmental exposures.
Early dietary shifts, such as removing heavy soy protein isolates and transitioning to unprocessed whole foods, yielded noticeable improvements in John’s symptoms. Twelve years later, reading Dr. Martin Blazer’s Missing Microbes provided the pivotal insight: the human microbiome acts as an internal pharmacy, producing critical vitamins, neurotransmitters, and cellular signals. When microbial communities lose function, systemic balance disrupts.
Environmental Stressors and Microbial Function
Martha’s research highlights how modern practices impact both soil ecosystems and human health:
- Agricultural Chemicals: Herbicides like glyphosate act as mineral chelators and antimicrobial agents. They disrupt soil bacteria responsible for plant nutrition and eliminate key gut microbes like Lactobacillus and Bifidobacterium, which produce essential vitamins and short-chain fatty acids.
- Cumulative Stress: Chronic stress—whether emotional, environmental, or nutritional—places a continuous load on the metabolic system. Over time, cumulative stressors can push bodily systems beyond their ability to self-regulate.
- Interconnected Microbes: Soil microbes feed plants, plants feed animals and humans, and human microbes maintain systemic health. Modern reliance on chemical inputs disrupts this web, reducing the nutrient density of our food supply.
Restoring Gut Function with Microbial Guilds
Rather than focusing solely on eliminating unwanted organisms, Martha emphasizes rebuilding microbial ecosystems using functional teams—or "guilds"—of bacteria. Targeted bacterial combinations can perform complex metabolic tasks, such as:
- Converting excess glucose and fructose into mannitol, a natural free radical scavenger.
- Producing short-chain fatty acids like butyrate to strengthen the gut lining.
- Reducing serum endotoxins (lipopolysaccharides) that trigger systemic inflammation.
- Supporting endogenous production of sleep- and mood-regulating compounds like serotonin and melatonin.
With gratitude,
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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