In this final episode of the season, I bring the conversation together.

Over the season, we have looked at genes, methylation, food, sleep, movement, stress, environmental load, relationships, and the invisible biological signals of daily life. In this episode, I offer the one question I want you to carry with you: what is this input asking my body to do?

This is the epigenetic lens. It is not about perfection, blame, or control. It is about seeing health as a continuous conversation between your life and your biology - and learning how to change the conversation where you can.

Downloadable Document

"The Epigenetic Lens" DOWNLOAD HERE

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Feinberg, A. P. - The Key Role of Epigenetics in Human Disease Prevention and Mitigation

Alegría-Torres, J. A., Baccarelli, A., & Bollati, V. - Epigenetics and Lifestyle

Choi, S. W. et al. - Modulation of DNA Methylation by One-Carbon Metabolism

Lane, M. M. et al. - Ultra-Processed Food Exposure and Adverse Health Outcomes

Severinsen, M. C. K. & Pedersen, B. K. - Muscle–Organ Crosstalk: The Emerging Roles of Myokines

Holt-Lunstad, J., Smith, T. B., & Layton, J. B. - Social Relationships and Mortality Risk: A Meta-analytic Review

Office of the U.S. Surgeon General - Our Epidemic of Loneliness and Isolation

Imprint

Dr. Nicola Schmitz

In this episode, I talk about the biological power of relationships.

I look at loneliness, social isolation, belonging, marital conflict, community, and the way our social environment can reach the immune system, inflammatory pathways, wound healing, stress physiology, gene expression, and mortality risk.

This is not an episode with easy answers. Relationships are not like buying a water filter or going to bed earlier. But if we are going to talk honestly about epigenetics, we cannot leave out one of the strongest inputs shaping human biology: whether a person feels connected, safe, seen, and supported.

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Holt-Lunstad, J., Smith, T. B., & Layton, J. B. - Social Relationships and Mortality Risk: A Meta-analytic Review

Office of the U.S. Surgeon General - Our Epidemic of Loneliness and Isolation: The U.S. Surgeon General’s Advisory on the Healing Effects of Social Connection and Community

Cole, S. W. et al. - Social Regulation of Human Gene Expression

Cole, S. W. - Social Regulation of Human Gene Expression

Kiecolt-Glaser, J. K. et al. - Hostile Marital Interactions, Proinflammatory Cytokine Production, and Wound Healing

Kiecolt-Glaser, J. K. et al. - Hostile Marital Interactions, Proinflammatory Cytokine Production, and Wound Healing

Imprint

Dr. Nicola Schmitz

In this episode, I talk about environmental load - not in a dramatic or moralizing way, but as a practical biological reality.

I explain how small daily exposures can accumulate through air, water, food, dust, cosmetics, plastics, cleaning products, furniture, packaging, cookware, and indoor environments. The question is not whether one single exposure will harm you. The question is what happens when small exposures arrive through multiple pathways, every day, for years.

This episode is about awareness, not perfection. I am not interested in making anyone afraid of modern life. I am interested in helping you identify the few inputs that matter enough to change.

Downloadable Document

"Room by room audit" DOWNLOAD HERE

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Kahn, L. G. et al. - Endocrine-Disrupting Chemicals: Implications for Human Health

U.S. Environmental Protection Agency - PFAS Explained

National Institute of Environmental Health Sciences - Endocrine Disruptors

U.S. Environmental Protection Agency - Volatile Organic Compounds’ Impact on Indoor Air Quality

Centers for Disease Control and Prevention / NIOSH - Benzene: NIOSH Pocket Guide to Chemical Hazards

Leslie, H. A. et al. - Discovery and Quantification of Plastic Particle Pollution in Human Blood

Sharma, R. K. et al. - Impact of Microplastics on Pregnancy and Fetal Development: A Systematic Review

Imprint

Dr. Nicola Schmitz

In this episode, I compare three generations of bodies: our grandmothers, our mothers, and us.

I talk about how daily life used to contain continuous, varied, unconscious movement - carrying, walking, lifting, cleaning, climbing, gardening, kneading, bending - and how modern life has removed much of that movement in just a few generations.

I also explain why muscle is not simply a movement tissue. Muscle is metabolically active, hormonally communicative, and deeply connected to inflammation, blood sugar, bone, brain, mitochondria, and longevity. Movement is not only exercise. It is information.

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Severinsen, M. C. K. & Pedersen, B. K. - Muscle–Organ Crosstalk: The Emerging Roles of Myokines

Pedersen, B. K. - Muscles and Their Myokines

Henson, J. et al. - Sedentary Behaviour and Disease Risk

Park, J. H. et al. - Sedentary Lifestyle: Overview of Updated Evidence of Potential Health Risks

Lindholm, M. E. et al. - An Integrative Analysis Reveals Coordinated Reprogramming of the Epigenome and the Transcriptome in Human Skeletal Muscle After Training

Lee Know - Mitochondria and the Future of Medicine

Imprint

Dr. Nicola Schmitz

In this episode, I talk about food not only as fuel, but as information.

I look at how modern food has changed: nutrient density, processing, additives, pesticides, packaging, ultra-processed foods, and the growing evidence that what we eat communicates with metabolism, inflammation, hormones, gut microbes, mitochondria, and gene regulation.

This is not a fear-based episode. It is an inventory. My goal is to help you understand why “eating well” can be more complicated today than it was for previous generations - and why food quality, processing, and context matter.

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Lane, M. M. et al. - Ultra-Processed Food Exposure and Adverse Health Outcomes: Umbrella Review of Epidemiological Meta-Analyses

Chris van Tulleken - Ultra-Processed People

Davis, D. R., Epp, M. D., & Riordan, H. D. - Changes in USDA Food Composition Data for 43 Garden Crops, 1950 to 1999

Marles, R. J. - Mineral Nutrient Composition of Vegetables, Fruits and Grains: The Context of Reports of Apparent Historical Declines

Leslie, H. A. et al. - Discovery and Quantification of Plastic Particle Pollution in Human Blood

Ragusa, A. et al. - Plasticenta: First Evidence of Microplastics in Human Placenta

Imprint

Dr. Nicola Schmitz

In this episode, I take you through one night of sleep, hour by hour.

I talk about sleep as one of the most active biological states of the body: a time for memory consolidation, hormonal regulation, immune recalibration, glymphatic clearance, mitochondrial recovery, oxidative stress repair, and cellular maintenance.

My aim is to move sleep out of the category of “rest” and into the category of essential biological work. Losing sleep is not only about being tired the next day. It changes what the body is able to repair, clear, regulate, and rebuild.

Downloadable Document

A supporting document for this episode is available here: The Sleep Audit

If you are interested in becoming an Epigenetics Coach yourself, learn about my program here: The Certified Epigenetics Coach Training

Sources

Matthew Walker - Why We Sleep

Reddy, O. C. & van der Werf, Y. D. - The Sleeping Brain: Harnessing the Power of the Glymphatic System Through Lifestyle Choices

Chong, P. L. H. et al. - Sleep, Cerebrospinal Fluid, and the Glymphatic System

Davinelli, S. et al. - Sleep and Oxidative Stress: Current Perspectives on the Role of Sleep in Cellular Homeostasis

Zou, Y. et al. - Nightshift Work Can Induce Oxidative DNA Damage: A Pilot Study

Stay connected:

Website: www.dr-nicolaschmitz.com

Instagram: @alter._health

Email: [email protected]

In this episode, I talk about stress not as a vague feeling, but as biology.

I describe three different stress patterns I have seen again and again: the high-functioning achiever who cannot feel the cost, the person who switches off but never truly resets, and the person whose nervous system is fragmented by constant demand.

The chemistry may overlap - cortisol, adrenaline, inflammation, sleep disruption, neurotransmitter depletion, immune effects - but the way stress enters the body is not the same for everyone. This episode is about recognizing the pattern before trying to fix it.

Sources

Herman, J. P. et al. - Regulation of the Hypothalamic-Pituitary-Adrenocortical Stress Response

Knezevic, E. et al. - The Role of Cortisol in Chronic Stress, Neurodegenerative Diseases, and Psychological Disorders

Cleveland Clinic - HPA Axis: What It Is and How It Works

Palma-Gudiel, H. et al. - Stress-Induced Epigenetic Changes in Humans

Stay connected:

Website: www.dr-nicolaschmitz.com

Instagram: @alter._health

Email: [email protected]

Today we do something different. We follow a single molecule on its actual journey, from a leaf of spinach growing in a field, through your gut wall, through your liver, through an enzyme called MTHFR that you may have heard about from genetic testing, into a single cell, all the way to a specific spot on a specific gene where it silences the gene it was made to silence.

The journey is real. It is happening, in some version, in your body right now, trillions of times a second, with the molecules from the food you ate yesterday and this morning. And in most modern adults, the journey is failing at at least one point. Often at several. This episode shows you where those failure points are and what the pathway actually needs to run at full speed.

If your blood work is normal but your energy is not, if your mood swings without obvious cause, if you carry unexplained fatigue that no doctor has been able to name, this is the episode that may explain it.

Free download with this episode: Nutrients Almost Every Westerner Is Low In. A practical reference with the nutrients that support methylation, the best food sources, and notes on supplementation.  For a personal conversation about your own methylation and where to start.

Sources

Choi, S. W. et al. - Modulation of DNA Methylation by One-Carbon Metabolism

Raghubeer, S. et al. - Methylenetetrahydrofolate Reductase, the One-Carbon Cycle, and Disease

Crider, K. S. et al. - Folate and DNA Methylation: A Review of Molecular Mechanisms and the Evidence for Folate’s Role

Stover, P. J. - One-Carbon Metabolism–Genome Interactions in Folate-Associated Pathologies

Ben Lynch - Dirty Genes

Stay connected:

Website: www.dr-nicolaschmitz.com

Instagram: @alter._health

Email: [email protected]

Everything you do enters your body through four doors. The bloodstream, the nervous system, the hormonal cascade, and the microbiome. Every meal, every night of sleep, every stressful call, every walk, every drink of water passes through one of these four channels and becomes, on the other side, information for your cells.

In this episode, we walk through each of the four doors and see how they actually work. We look at estrogen recycling and why the gut has more to do with hormones than most people realize. We meet a businessman whose morning routine looked perfect from the outside, and whose afternoons quietly undid everything he had built in the mornings. And we set up the bridge into the next episode, where we go deep into methylation, the switch behind everything else we have discussed.

If you have ever wondered what actually happens to a meal or a stressful conversation once it enters your body, this is the episode where the machinery gets visible.

If you are interested in becoming an Epigenetics Coach yourself, have a look here: Certified Epigenetics Coach Training

Sources

Hartley, T. R. et al. - Caffeine and Stress: Implications for Risk, Assessment, and Management of Hypertension

Reis, C. E. G. et al. - Effects of Coffee Consumption on Glucose Metabolism

National Cancer Institute - Benzene and Cancer Risk

Centers for Disease Control and Prevention / NIOSH - Benzene: NIOSH Pocket Guide to Chemical Hazards

U.S. Environmental Protection Agency - Volatile Organic Compounds’ Impact on Indoor Air Quality

Joye, Y. - Some Reflections on the Relevance of Fractals for Art Therapy

Stay connected:

Website: www.dr-nicolaschmitz.com

Instagram: @alter._health

Email: [email protected]

If a doctor has ever told you that something runs in your family and there is nothing you can do about it, this episode is for you. Genetic risk is real. Genetic destiny is not. The gap between the two is where almost all of the useful work happens, and almost nobody is taught to see it.

We look at penetrance, which is the technical word for how often a gene actually produces the trait it codes for. We look at the Dutch Hunger Winter studies, which showed that what one generation lives through can shape the biology of the next. And we walk through a client story about a woman who was tested for the BRCA1 gene and, after receiving her result, said something that stays with me: I have wasted twenty years.

Free download with this episode: Family History Mapping, a structured guide to look at your own family history and see the patterns that actually matter. 

If you carry a family history that has been weighing on you, or you want to think about your own biology with better information, this is for you.

Sources

GeneReviews / NCBI Bookshelf - BRCA1- and BRCA2-Associated Hereditary Breast and Ovarian Cancer

National Cancer Institute - BRCA Gene Changes: Cancer Risk and Genetic Testing

Kuchenbaecker, K. B. et al. - Risks of Breast, Ovarian, and Contralateral Breast Cancer for BRCA1 and BRCA2 Mutation Carriers

Chen, S. & Parmigiani, G. - Meta-Analysis of BRCA1 and BRCA2 Penetrance

Heijmans, B. T. et al. - Persistent Epigenetic Differences Associated with Prenatal Exposure to Famine in Humans

Kaati, G., Bygren, L. O., & Edvinsson, S. - Cardiovascular and Diabetes Mortality Determined by Nutrition During Parents’ and Grandparents’ Slow Growth Period

Vågerö, D. et al. - Paternal Grandfather’s Access to Food Predicts All-Cause and Cancer Mortality in Grandsons

Ben Lynch - Dirty Genes

Stay connected:

Website: www.dr-nicolaschmitz.com

Instagram: @alter._health

Email: [email protected]