Modern Thyroid and Wellness

What if your thyroid symptoms aren’t an isolated problem, but one signal from a body asking you to pay attention?
In this episode of Modern Thyroid & Wellness, McCall McPherson sits down with Kelly McKenna, CEO and Co-Founder of End Chronic Disease, to explore thyroid health, autoimmunity, chronic stress, environmental exposures, nutrition, and what it really means to focus on prevention.
Kelly’s health journey began with a celiac disease diagnosis in high school, followed by nearly two decades of autoimmune and chronic health challenges. In her early 30s, thyroid labs disrupted her plans to freeze her eggs and pushed her to ask a different question: instead of accepting hypothyroidism as inevitable, what might actually be driving it?
That curiosity eventually changed both her health and career.
Key Topics Covered
Kelly’s experience with celiac disease, hypothyroidism, and Hashimoto’s
How childhood stress may influence long-term health
Why sleep, nutrition, movement, relationships, and environment matter
Environmental exposures and thyroid health
The conversation around paraquat and chronic disease
Why prevention should begin in childhood
Iodine, selenium, vitamin D, iron, and thyroid health
Why Kelly calls her thyroid a “barometer” for her whole body
Simple strategies for fatigue and autoimmune flares
The importance of boundaries and emotional health
Bringing preventive health education into schools
Why chronic disease prevention requires both individual and systemic change

When Your Thyroid Becomes a Warning System
After being re-diagnosed with Hashimoto’s, Kelly began closely observing how changes in sleep, nutrition, nutrient status, stress, and other aspects of daily life corresponded with her symptoms and thyroid labs.
She focused on nutrients including iodine, selenium, vitamin D, and iron and experimented with dietary changes. As her thyroid markers improved, she noticed changes in her skin, digestion, fatigue, and overall wellbeing too.
Today, Kelly describes her thyroid as a “barometer for my whole body.” When fatigue and familiar symptoms return, she views them as signals that her body may need more support, rest, or recovery.
Stress, Environment, and Chronic Disease
Kelly also shares how growing up with a brother who experienced significant disabilities and frequent seizures created a chronic sense of uncertainty and stress, even within a loving family. Only later did she recognize how those experiences may have shaped her stress response.
The conversation expands into environmental health, including paraquat exposure, ultra-processed foods, school environments, movement, and why the places where we live, work, learn, and eat deserve a larger role in conversations about chronic disease prevention.
What If You’re Already Exhausted?
When someone is already depleted, complicated wellness routines can feel impossible.
Kelly recommends returning to basics. Her personal recovery toolbox has included restorative yoga, putting her legs up the wall, prioritizing sleep, simplifying food, gentle walking, acupuncture, positive experiences with people she loves, and examining emotional stress or boundaries that may be draining energy.
The goal is to learn your body’s signals and build a collection of tools you can return to when you need them.
About Kelly McKenna
Kelly McKenna is the CEO and Co-Founder of End Chronic Disease, an organization focused on chronic disease prevention, education, awareness, and policy change.
🌐 End Chronic Disease
💼 Kelly McKenna on LinkedIn
📸 Kelly on Instagram @earth.to.kelly
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What if the foods, supplements, workouts, and hormone therapies that work beautifully for someone else are completely wrong for your biology?
In this episode of Modern Thyroid & Wellness, McCall McPherson sits down with Kashif Khan, bestselling author of The DNA Way, celebrity longevity coach, and two-time TEDx speaker, for a deep dive into functional genomics and personalized health. Kashif explains how DNA acts as an instruction manual for the body and why understanding those instructions may help explain why people respond so differently to the same foods, environmental exposures, exercise programs, supplements, and hormone therapies.
Drawing from his own experience with chronic illness and years of genetic research, Kashif explores the relationship between genetics and lifestyle, including thyroid health, Hashimoto’s, women’s hormones, detoxification, metabolism, gut health, sleep, cognitive function, inflammation, and longevity. The conversation offers a different way to think about personalized medicine: instead of simply asking what disease you may be genetically predisposed to, ask how your biology works and what choices may better support it.
Key Topics Covered
What DNA actually tells us about everyday health
Why genetics are not necessarily destiny
Genetics versus epigenetics
How lifestyle, environment, and nutrition interact with genetic predispositions
Kashif’s personal journey from chronic illness to genetic research
Why two people can make the same health choices and experience very different outcomes
Genetic differences in detoxification
Why DNA testing is different from repeatedly testing hormones, cholesterol, or the microbiome
How genetics may influence sleep and circadian preferences
Personalizing nutrition and carbohydrate intake
Genetics, metabolism, and gut health
Environmental exposures and individual detoxification capacity
Women’s hormone health and estrogen metabolism
Genetics, Hashimoto’s, autoimmunity, and thyroid health
Why functional genomics goes beyond disease-risk scores
Personalizing exercise according to individual biology
Why nervous system regulation and gut health may need to come before advanced biohacking
The future of personalized medicine and longevity
Why understanding the biology underneath symptoms matters

DNA as Your Body’s Instruction Manual
Kashif describes DNA in practical terms as an instruction manual contained within the cells of the body.
Genes provide instructions for countless biological processes, including producing hormones, metabolizing food, detoxifying compounds, and supporting cognitive function.
The important difference is that everyone's instruction manual is slightly different.
That helps explain why two people can follow the same diet, take the same hormone prescription, or perform the same exercise routine and experience dramatically different outcomes.
Genetics Load the Gun, Environment Pulls the Trigger
One of the central ideas in the episode is the interaction between genetics and epigenetics.
Your DNA does not change every time you change your diet or lifestyle, but the choices you make interact with the biological instructions you inherited.
Kashif groups those choices into three broad areas:
Environment
Nutrition
Lifestyle

Environment includes what you are exposed to. Nutrition includes food, supplements, and other nutritional interventions. Lifestyle encompasses factors such as exercise, work, and sleep.
Understanding genetics, therefore, is not simply about predicting disease. Kashif sees it as a way to understand how your individual body processes the choices you make every day.
Kashif’s Personal Health Journey
Kashif did not enter genomics through a traditional medical or scientific career path.
Around age 38, after previously considering himself healthy, he developed multiple chronic health problems, including severe eczema, psoriasis, gut issues, migraines, reflux, and inflammation.
He received diagnoses and prescriptions but remained focused on a different question:
Why did this happen?
His search took him through traditional Chinese medicine, homeopathy, naturopathy, functional medicine, hormone health, the microbiome, and eventually genetics.
Understanding genetic differences helped him begin connecting his individual biology with environmental and lifestyle exposures. His recovery ultimately inspired him to leave his previous technology consulting business and build a genetic research company.
Why Your Detoxification Genetics Matter
Kashif uses his own GSTM1 genetics as an example of how individual differences can influence detoxification.
He explains that glutathione plays an important role in neutralizing and removing unwanted compounds and that genetic differences can affect how those processes function in different areas of the body.
In Kashif’s case, he discovered a copy number variation involving GSTM1, which became one piece of understanding why exposures that did not seem to affect someone living an otherwise similar lifestyle could affect him differently.
This illustrates the broader problem with one-size-fits-all wellness advice: what is tolerated well by most people may not necessarily be optimal for every individual.
Why DNA Testing Is Different
Hormones change.
The gut microbiome changes.
Toxic burden changes.
Cholesterol changes.
DNA does not.
Kashif explains that this permanence is part of what makes genomic information valuable. Rather than repeatedly testing DNA, the goal is to understand what your genetic information means and then use that knowledge alongside changing health data throughout your life.
His current mission centers heavily on education and helping people better understand their own genetic information.
Start With the Foundation Before Biohacking
One of Kashif’s cautions is that people often enter the longevity and biohacking world by copying people who have already spent years optimizing their health.
That can quickly become overwhelming.
His suggested framework begins with identifying where you currently are.
If there is an acute health problem, address that first.
Then consider foundational areas such as:
Nervous system regulation
Gut health
Toxic burden
Health optimization
Longevity and advanced biohacking

Trying to fix decades of accumulated problems in two weeks is unlikely to create the sustainable outcome people are looking for.
The goal is to work in the right order rather than doing everything at once.
Five Areas Functional Genomics Can Help Personalize
Kashif identifies several major areas where he believes functional genomics can provide useful insights.
Cognitive Function
Genetic differences may influence neurochemical pathways involved in behavior, reward, focus, and how people perceive and respond to their environment.
Sleep
Difficulty falling asleep, staying asleep, feeling restored, or naturally functioning better earlier or later in the day may involve different biological pathways.
Metabolism
People do not necessarily respond identically to the same macronutrient balance.
Kashif shares an example involving female athletes who were struggling on a low-carbohydrate approach but performed better after carbohydrates were reintroduced based on their individual biology.
Gut and Environmental Health
Genetics may help provide context for how an individual responds to environmental exposures and how effectively certain detoxification processes function.
Hormones
This is one of the areas Kashif believes has enormous potential, particularly for women. Understanding how someone produces, binds, metabolizes, and clears hormones may provide a more personalized framework for women's health.
Genetics, Thyroid Health, and Hashimoto’s
McCall and Kashif take the conversation directly into thyroid health.
Kashif explains that people may arrive with symptoms such as fatigue without realizing that thyroid physiology could be part of the picture.
They discuss potential connections among detoxification pathways, environmental exposures, gut-brain signaling, autoimmunity, estrogen metabolism, and thyroid health.
The bigger takeaway is that there may not be one universal reason someone develops Hashimoto’s or another thyroid problem.
Kashif’s approach is to ask what biological pathways may be contributing in that particular individual so interventions can become more precise rather than simply adding more generalized recommendations.
Why Women’s Hormones Need More Personalization
Kashif describes women’s hormone health as one of the areas where his research revealed significant gaps in conventional approaches.
The conversation explores estrogen metabolism and why understanding what happens after estrogen is produced may matter.
Kashif discusses different estrogen metabolites and how genetics may influence their production and processing.
For McCall, this aligns with what she sees clinically: thyroid hormones and reproductive hormones cannot always be treated as isolated systems.
Understanding how an individual...

What if menopause wasn’t something to fear or simply endure, but a transition you could actively prepare for?
In this episode of Modern Thyroid and Wellness, McCall McPherson sits down with Lisa Jedan, creator and host of MenoPositive, to challenge the long-standing narrative that menopause automatically means decline. After a successful career in PR and marketing, where she helped build brands and shape stories, Lisa turned those same skills toward changing the conversation around women’s health and aging.
Lisa shares what she has learned from interviewing experts across conventional medicine, Chinese medicine, longevity, breathwork, nutrition, and women’s health. The message she hears repeatedly is clear: hormones do not operate in isolation, and the earlier women invest in their health, the more options they may have as they age.
Together, McCall and Lisa explore strength training, nutrition, metabolism, thyroid health, Hashimoto’s, mindset, digestion, protein, fiber, sustainable lifestyle changes, and why midlife may become one of the healthiest and most fulfilling chapters of a woman’s life.
Key Topics Covered
Why Lisa created MenoPositive
Changing the narrative around menopause and aging
Why menopause preparation should begin before symptoms become overwhelming
How thyroid health and reproductive hormones overlap
Lisa’s personal experience with Hashimoto’s
Why women often put themselves last
Moving from perfection toward small, sustainable health changes
Why strength training becomes increasingly important during midlife
Building and preserving muscle for healthy aging
Protein, fiber, metabolism, and digestive health
Why regular bowel movements matter
Simple ways Lisa adds flaxseed and sprouts to her diet
How mindset may influence the menopause experience
Building trust with yourself through consistent habits
Moving beyond biohacking toward “bioharmony”
Why wellness optimization can become exhausting
The importance of sleep, movement, and nutrition before advanced optimization
Why your best years do not have to be behind you

Changing the Menopause Narrative
Lisa began her career as a dancer and performer before moving into PR and marketing, where she built a career around storytelling and changing narratives.
When she entered perimenopause and menopause herself, she noticed that the cultural story surrounding this stage of life did not match her experience.
So much of the messaging centered on loss, decline, and everything women should expect to go wrong.
Lisa wanted a different conversation.
That desire became MenoPositive, a platform and philosophy built around educating women about hormone changes while showing them what they can actively do to support their health.
After interviewing experts from a wide range of disciplines, Lisa says one message consistently emerges: menopause does not have to equal decline.
Why We Should Prepare for Menopause
Lisa makes a compelling comparison: we prepare for pregnancy, retirement, and marathons, so why do so many women arrive at one of the biggest biological transitions of their lives without preparation?
Historically, women have often been taught to wait until symptoms appear and then figure out how to manage them.
Lisa wants to reverse that approach.
Instead of asking, “How can I manage these symptoms?” she encourages women to ask how they can prepare their bodies for a more positive menopause experience.
For Lisa, this is not about perfection. It is about preparation and beginning wherever you are.
Thyroid Health and Menopause Symptoms Can Overlap
Lisa also lives with Hashimoto’s, giving her firsthand experience with how difficult it can be to distinguish thyroid symptoms from hormonal changes during midlife.
Mood changes, libido concerns, fatigue, brain fog, and changes in how the body feels can appear across both thyroid dysfunction and perimenopause.
One of the biggest lessons Hashimoto’s taught Lisa was to become curious about what her body was communicating rather than automatically accepting symptoms as her new normal.
McCall emphasizes that thyroid hormones and reproductive hormones do not exist in isolation. Understanding both can be especially important as women move through their 30s, 40s, and beyond.
Why Women Need to Put Themselves Back on the List
Whether a woman is the CEO of a company or the CEO of her household, Lisa observes that women often place themselves third, fourth, or fifth on their own priority lists.
Midlife can offer an opportunity to change that.
Lisa encourages women to believe they deserve to be healthy and to recognize that investing in themselves does not require changing everything overnight.
Cooking one additional vegetable, adding a little movement, or making one sustainable change can begin shifting the trajectory.
McCall connects this idea to the power of small habits. Tiny actions may seem insignificant in isolation, but when repeated consistently, they compound.
Strength Training as a Midlife “Secret Weapon”
For Lisa, two changes significantly influenced her menopause experience: strength training and nutrition.
She had always been active because of her background as a dancer, but midlife encouraged her to change the way she exercised.
Strength training became a priority.
Lisa noticed changes not only in her body, but also in her mood, sleep, confidence, and mindset.
McCall emphasizes that building muscle becomes increasingly challenging as women move through perimenopause and menopause, making it valuable to establish that foundation earlier.
Lisa compares strength training to putting money in the bank. Building strength now creates reserves that may become increasingly valuable later in life.
Keep the Schedule, Change the Scope
One of Lisa’s favorite ideas comes from Atomic Habits by James Clear: “Keep the schedule, change the scope.”
If you planned to exercise but suddenly only have ten minutes, doing those ten minutes still allows you to keep the promise you made to yourself.
Lisa and McCall discuss how this consistency builds something even bigger than fitness: self-trust.
Every time you follow through, especially when you do not feel like it, you reinforce the belief that you can rely on yourself.
That mindset can make sustainable health changes much more achievable than an all-or-nothing approach.
From Biohacking to Bioharmony
Women today are surrounded by wellness advice.
Eat more protein. Take supplements. Strength train. Optimize your hormones. Track your sleep. Improve your metabolism.
Eventually, optimization itself can become exhausting.
Lisa believes the conversation is beginning to shift away from constant “biohacking” toward what she calls bioharmony, a more sustainable approach to working with the body rather than endlessly trying to optimize every variable.
The foundation remains surprisingly simple:
Eat well. Move your body. Sleep.
These habits are not always easy, but Lisa believes establishing them first creates a stronger foundation before adding more advanced interventions.
Protein, Fiber, and Digestion in Midlife
Nutrition is another major part of the conversation.
Across Lisa’s interviews with experts, protein repeatedly emerges as an important topic, particularly alongside strength training and maintaining muscle.
But protein is not the whole story.
Lisa also emphasizes fiber and digestive regularity.
She shares that many women assume having a bowel movement every two or three days is normal. Her own experience taught her how stress and rushed mornings could affect digestion.
Two simple foods she regularly incorporates are flaxseed and sprouts. She prepares flaxseed ahead of time and adds it to yogurt, while sprouts can easily be added to eggs, salads, or meals.
These small, affordable habits reflect Lisa’s larger philosophy: health does not always require expensive or complicated interventions.
You Have More Influence Than You Think
When McCall asks Lisa what mindset shift she wishes every woman could make, her answer is simple:
You have a choice.
Lisa believes women have more influence over how they approach and experience menopause than many have been led to believe.
That does not mean every symptom can be prevented or that every woman will have the same experience. It means women can become informed, seek appropriate care, strengthen their health foundations, and make choices that support the decades ahead.
Your Best Years Are Not Behind You
Perhaps the biggest myth Lisa wants to challenge is the idea that a woman’s best years are over once she reaches midlife.
She sees the opposite.
Women in their 40s, 50s, and 60s are starting businesses, stepping into leadership, pursuing new goals, and redefining what aging looks like.
Instead of treating menopause as an ending, Lisa sees it as an opportunity to enter the second half of life with greater wisdom, perspective, confidence, and purpose.
For her, menopause can be a powerful new beginning.
Final Takeaway
Preparing for menopause does not mean pursuing perfection.
It means starting where you...

What if you've optimized your thyroid hormones, improved your nutrition, reduced inflammation, and addressed the underlying biochemistry, but you still don't feel fully well?
In this episode of Modern Thyroid and Wellness, McCall McPherson welcomes chronic illness recovery educator Faith Ashenden for a fascinating conversation about the neuroscience of healing and how the brain may continue reinforcing chronic symptoms long after the body has begun to recover. After overcoming Graves' disease, chronic fatigue syndrome, IBS, panic attacks, and years of debilitating illness, Faith now teaches women how to retrain subconscious patterns, regulate the nervous system, and rebuild confidence in their health.
Together, McCall and Faith explore why healing is about more than lab work alone, how chronic illness can shape identity, and why combining functional medicine with nervous system work may help people move from simply managing symptoms to truly thriving.
Key Topics Covered
Faith's journey with Graves' disease and chronic illness
The challenges of delayed diagnosis and years of debilitating symptoms
Graves' disease versus Hashimoto's disease
Why treating thyroid disease doesn't always resolve every symptom
The role of functional medicine in Faith's recovery
What neuroplasticity is and how the brain adapts to chronic illness
How chronic symptoms can become learned neurological patterns
The difference between biochemical healing and nervous system healing
Chronic illness identity and fear of relapse
Why trauma from chronic illness itself matters
Common limiting beliefs that keep people feeling stuck
Practical ways to begin retraining the brain
Why healing is rarely linear
Building resilience through new beliefs and daily habits
Combining functional medicine with mindset and nervous system work

Faith's Story of Chronic Illness
Faith developed Graves' disease while attending college after experiencing severe anxiety, rapid weight loss, heart palpitations, overwhelming fatigue, and multiple unexplained symptoms. After months of searching for answers, she was finally diagnosed when an endocrinologist recognized the signs almost immediately.
Although treatment addressed her hyperthyroidism, Faith continued struggling for years with chronic fatigue, digestive issues, anxiety, and other persistent health challenges. Her experience eventually led her into functional medicine, where she began addressing the underlying physiological contributors to her symptoms before discovering the important role that neuroplasticity and the nervous system would play in her long-term recovery.
Why the Brain Matters in Chronic Illness
Faith explains that when symptoms persist for months or years, the brain naturally adapts.
Through neuroplasticity, the brain learns patterns that associate certain situations, environments, or activities with symptom responses. Even after many underlying physical issues have improved, these learned pathways may continue reinforcing chronic symptoms.
Rather than suggesting illness is "all in your head," Faith emphasizes that biochemical healing and nervous system healing often work together.
Healing Beyond the Lab Results
McCall shares that many patients improve dramatically after optimizing thyroid hormones, inflammation, nutrition, and metabolic health, yet some continue feeling as though they cannot fully regain their confidence or resilience.
Faith believes this is where subconscious beliefs, fear of relapse, and nervous system regulation become important.
Together, they discuss how healing often involves addressing both physiology and psychology instead of viewing them as competing explanations.
The Identity of Being Chronically Ill
One of the most powerful themes throughout the episode is identity.
After years of illness, many people begin organizing their lives around avoiding symptoms rather than building confidence in recovery.
Faith encourages listeners to recognize when the identity of being chronically ill has become part of their daily thinking and to intentionally begin creating a new vision of themselves beyond illness.
Trauma Doesn't End With the Diagnosis
The conversation also highlights an often-overlooked form of trauma: the experience of living with chronic illness itself.
Repeated medical appointments, unanswered questions, fear of relapse, canceled plans, and years of uncertainty can all shape subconscious beliefs about safety and health.
Faith explains that recognizing and working through those experiences may become an important part of long-term recovery.
Practical Steps to Retrain the Brain
Faith encourages listeners to become more intentional about where they place their attention.
Rather than constantly searching for evidence that reinforces illness, she recommends looking for evidence of healing, celebrating small improvements, and creating daily habits that reinforce resilience instead of fear.
She also discusses limiting exposure to online communities or content that continually reinforces hopelessness while seeking stories of recovery, possibility, and growth.
Healing Is a Journey
Both McCall and Faith agree that healing rarely happens in a perfectly straight line.
Setbacks and symptom flares do not necessarily erase progress. Instead, they can become opportunities to strengthen new patterns, build confidence, and continue developing trust in the body's ability to heal.
The goal is not perfection but creating a healthier relationship with both the body and the mind.
Final Takeaway
Faith Ashenden reminds us that healing is about more than simply eliminating symptoms.
Once the body's underlying physiology has been addressed, rebuilding confidence, changing limiting beliefs, regulating the nervous system, and creating new patterns of resilience may become the next layer of recovery.
By combining functional medicine with neuroscience and mindset work, many people may discover possibilities for healing they never thought were available.
About Faith Ashenden
Faith Ashenden is a chronic illness recovery educator, founder of That Healing Feeling, and host of the That Healing Feeling Podcast. After fully recovering from Graves' disease, chronic fatigue syndrome, IBS, panic attacks, and multiple chronic health conditions, she now helps women understand the neuroscience of healing, nervous system regulation, and subconscious pattern change through her educational programs and coaching.
Resources & Links
🌐 Faith Ashenden
https://faithashenden.com/
📸 Instagram
https://www.instagram.com/thathealingfeeling/
🎙️ That Healing Feeling Podcast
https://open.spotify.com/show/5bOaTuON429YbnFesShdxt
🎓 Free Masterclass
Available through Faith's website and Instagram.
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What if the key to better thyroid health, metabolism, and longevity starts at the cellular level?
In this episode of Modern Thyroid and Wellness, McCall McPherson is joined by David Roberts and Dr. John Gildea, the founders of Mara Labs, to explore the science behind chronic inflammation, oxidative stress, detoxification, and why bioavailability is one of the most overlooked factors in nutritional supplementation.
David shares the deeply personal story that inspired Mara Labs after his wife Mara's battle with breast cancer, while Dr. Gildea explains how his own scientific research led him to develop innovative ways to improve the absorption of powerful natural compounds like sulforaphane and curcumin. Together, they discuss how environmental toxins, poor nutrition, gut barrier dysfunction, and chronic inflammation may contribute to many of today's chronic health conditions—and why supporting the body's natural detoxification pathways is more important than ever.
Key Topics Covered
The personal story behind the founding of Mara Labs
Why bioavailability matters more than simply taking supplements
What sulforaphane is and why it has become one of the most researched plant compounds
The role of chronic inflammation in long-term health
Oxidative stress and its relationship to chronic disease
Understanding NRF2 and the body's natural antioxidant defenses
Phase I, Phase II, and Phase III detoxification
How gut barrier function influences toxin exposure
Environmental toxins, microplastics, and endocrine disruption
Practical ways to reduce your toxic burden
The connection between inflammation and thyroid hormone function
How sulforaphane and curcumin may support healthy cellular function
Why personalized medicine matters
The science behind GLPerfect™, BrocElite®, CurcuElite®, BerbElite®, and Microplast-X™

From Personal Tragedy to Purpose
Mara Labs was born from an incredibly personal journey.
After David Roberts' wife Mara was diagnosed with breast cancer, he partnered with scientist Dr. John Gildea to better understand natural compounds that could support cellular health. Their research led them to sulforaphane, a compound naturally found in broccoli sprouts, but they quickly discovered that creating a stable, bioavailable form was one of the biggest scientific challenges.
Following Mara's passing, David and John committed themselves to bringing scientifically formulated, highly bioavailable nutritional supplements to market in her honor.
Why Bioavailability Matters
One of the biggest themes throughout the conversation is that the quality of a supplement depends on much more than the ingredient listed on the label.
Many natural compounds show remarkable results in laboratory studies but are poorly absorbed by the human body.
David and Dr. Gildea explain how Mara Labs focuses on improving bioavailability so these compounds can actually reach the cells where they are intended to work.
Rather than simply increasing dosage, their research has centered on improving delivery.
Chronic Inflammation Starts Long Before Disease
The conversation explores how chronic disease often develops years before a formal diagnosis.
Dr. Gildea explains that declining nutrient density, increasing environmental toxin exposure, oxidative stress, and chronic low-grade inflammation gradually affect cellular function over time.
Whether those changes eventually appear as thyroid disease, metabolic dysfunction, autoimmune conditions, or another chronic illness often depends on an individual's genetics, lifestyle, and overall resilience.
Detoxification Is More Than a Trend
Detoxification is often misunderstood.
The guests explain that true detoxification involves multiple phases that occur throughout the body—not just in the liver—and depends on properly transforming, processing, and eliminating toxins.
They also emphasize that reducing exposure remains just as important as supporting the body's detoxification pathways.
Simple strategies discussed include improving indoor air quality with HEPA filtration, drinking filtered water, choosing less processed foods, and purchasing food from trusted local sources whenever possible.
NRF2: The Master Switch for Cellular Protection
A major focus of the episode is NRF2, one of the body's primary cellular defense pathways.
The guests explain how sulforaphane activates NRF2, supporting antioxidant production, Phase II detoxification, cellular resilience, and healthy inflammatory responses.
Curcumin is also discussed as another compound that complements these pathways while supporting a balanced inflammatory response.
Together, these compounds may help support overall cellular health through multiple biological mechanisms.
Environmental Toxins and Microplastics
David and Dr. Gildea discuss the growing concern surrounding microplastics and endocrine-disrupting chemicals.
They explain how microplastics may carry additional toxins into the body while potentially interfering with normal hormonal signaling.
The conversation also introduces Microplast-X™, a newer Mara Labs product designed to support the body's natural ability to remove accumulated microplastics.
Supporting Metabolic Health
The discussion also explores GLPerfect™, a supplement developed to support healthy metabolism using highly bioavailable natural compounds.
Rather than replacing prescription GLP-1 medications, the product was designed as a nutritional approach that supports several pathways involved in appetite regulation, blood sugar balance, fat metabolism, and muscle preservation.
The conversation highlights the importance of viewing metabolism through a broader lens than weight loss alone.
Thyroid Health and Cellular Function
McCall connects many of the concepts discussed back to thyroid health.
She explains that many patients produce adequate thyroid hormone but struggle with activation, conversion, or cellular utilization.
Reducing inflammation, supporting antioxidant defenses, and improving overall cellular health may help create a healthier environment for thyroid hormone function.
The discussion also explores the relationship between inflammation and Hashimoto's thyroiditis and why supporting the body's underlying physiology may benefit overall wellness.
Final Takeaway
David Roberts and Dr. John Gildea remind us that long-term health begins long before disease is diagnosed.
Supporting healthy cellular function, reducing chronic inflammation, minimizing toxic exposures, and improving nutrient bioavailability all contribute to building a stronger foundation for lifelong health.
Rather than searching for a single miracle solution, lasting wellness often comes from consistently supporting the body's natural systems and choosing interventions backed by thoughtful science.
About the Guests
David Roberts is the co-founder and Managing Partner of Mara Labs. Inspired by his wife Mara's battle with breast cancer, he helped establish the company to develop highly bioavailable nutritional supplements focused on supporting cellular health, detoxification, and longevity.
Dr. John Gildea is the co-founder and Chief Science Officer of Mara Labs. A molecular biologist and researcher, his work focuses on cellular biology, oxidative stress, nutrient bioavailability, inflammation, and the development of innovative nutritional compounds that support healthy aging.
Resources & Links
🌐 Mara Labs
📸 Mara Labs Instagram
🎙️ Mara Labs Podcast

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