Why your genes are not your destiny — and what functional medicine can do about it
If you have ever been told that your health condition is genetic — that your high cholesterol, your autoimmunity, your cancer risk, your depression runs in the family and there is not much you can do about it — this post is for you.
Because what you have been told, while not entirely wrong, is profoundly incomplete. And that incomplete story may be costing you your health.
Every day I work with clients who have been handed genetic verdicts by well meaning providers and sent home without a plan, without tools, and without hope. My job — and my passion — is to change that story.
Because here is what I know after years of clinical practice: your genes are not your destiny. And the science backs that up completely.
The Client Story That Changed How I Practice
Let me tell you about a client whose story has never left me.
She fought breast cancer. From the very beginning she was told it was genetic. That was the explanation. That was the beginning and the end of the conversation. What she was never told — not once during her diagnosis, her treatment, or her recovery — is that she had power.
She was never told that the foods she ate could influence her cancer outcomes. She was never told that her emotional state directly impacts her immune system and her body’s ability to fight disease. She was never told that the farm she grew up near — where planes regularly dropped pesticides and herbicides over the corn fields — may have had everything to do with why her genes expressed themselves the way they did.
She was handed a genetic verdict and sent into battle without ever being given her most powerful weapons.
She survived. She is remarkable. And then she was told that her recurrence rate was high. Once again the conversation stopped there. No guidance on how to support her body. No discussion of nutrition, detoxification, immune support, or lifestyle. Just a statistic — and the unspoken message that her only option was to hope it did not come back.
Hope.
I believe deeply in the power of faith and a positive spirit. But hope without action is not a health strategy. When a provider hands a cancer survivor a recurrence statistic and sends her home with nothing but hope — that is not care. That is abandonment dressed up as medicine.
I hope my cancer does not come back is a passive sentence. It puts the outcome entirely outside of your control. What I wanted her to understand — what I want every person reading this to understand — is that there is an enormous amount you can do. You are not a bystander in your own biology. You never were.
She eventually found her way to my practice — this time with high cholesterol. And once again she had been told it was likely genetic. Once again she felt like her biology had already decided her future.
That is when everything changed.
The Science of Epigenetics — Why Your Genes Are Not Fixed
There is a foundational principle in functional medicine that I return to again and again: our genetics load the gun, but our environment pulls the trigger.
This is not just a metaphor. It is the science of epigenetics — one of the most rapidly growing and empowering fields in all of modern medicine.
Epigenetics is the study of changes in gene expression that occur without altering the underlying DNA sequence. In simple terms: your genes are fixed, but whether those genes are switched on or off is not. The same genetic blueprint can produce very different outcomes depending on the environment that surrounds it.
And that environment is largely within your control.
Research published in Frontiers in Nutrition (2025) found that lifestyle factors significantly influence epigenetic changes — specifically modifications in gene expression that do not involve alterations to the DNA sequence itself. Diet, exercise, mindfulness practices, and environmental exposures all play crucial roles in determining which genes are expressed and which remain dormant.
The findings are remarkable:
Mindfulness practices, particularly meditation, have been shown to regulate DNA methylation — a key epigenetic mechanism — reducing markers of chronic stress and systemic inflammation. Anti-inflammatory dietary approaches, including Mediterranean style eating patterns, have been shown to slow epigenetic aging and improve key health biomarkers. High intensity and resistance exercise have been shown to induce epigenetic modifications that improve metabolic function, mitochondrial health, and insulin sensitivity at the cellular level (Frontiers in Nutrition, 2025).
Conversely, research by Bollati and Baccarelli (2010) identified several lifestyle factors that modify epigenetic patterns in ways that increase disease risk — including tobacco use, alcohol consumption, environmental pollutant exposure, chronic psychological stress, and disrupted sleep.
The takeaway is profound: every meal you eat, every walk you take, every night of quality sleep, every decision to reduce your toxic load — these are not small lifestyle choices. They are instructions you are sending to your genes every single day. And those instructions matter enormously.
What This Means for Chronic Disease
For my client — the one who fought breast cancer, survived, and came to me with high cholesterol — the environment had been pulling the trigger on her genetic predispositions for decades.
She grew up near fields regularly sprayed with pesticides and herbicides. She carried genetic vulnerabilities that were never identified or addressed. She navigated decades of stress, grief, and fear without ever being given tools to support her body through those experiences. And she was never — not once — told to look at her health through an environmental or nutritional lens.
The research tells us that environmental toxicant exposure, chronic stress, inflammatory dietary patterns, and unprocessed emotional burdens all create epigenetic changes that increase cancer risk, cardiovascular risk, and immune dysfunction (Bollati & Baccarelli, 2010). These are not abstract concepts. They are the lived reality of millions of people who have been told their health is simply genetic and there is nothing they can do.
There is so much they can do. There is so much you can do.
How Functional Medicine Uses Genetic Testing Differently
In conventional medicine genetic testing is often used to confirm risk and deliver a verdict. You have the BRCA gene. You have a family history of heart disease. Your cholesterol is likely genetic. The conversation ends there.
In functional medicine we use genetic testing as a starting point, not an ending point.
Genetic testing in a functional medicine context reveals specific vulnerabilities in your body’s systems — how efficiently you detoxify, how well you methylate, how your body regulates inflammation, how you process key nutrients like folate, B12, and vitamin D, and how your hormones are metabolized. Armed with this information we do not predict your future. We build a proactive plan to address those vulnerabilities before they become problems.
For my client this meant understanding exactly which environmental and nutritional factors had been most likely to activate her genetic risks — and building a plan that directly addressed them. We worked on her toxic load, her nutrition, her stress response, her immune support, and her inflammatory markers. We did not guess. We did not apply a generic protocol. We responded to her specific data.
Her cholesterol improved. But more importantly she finally felt like someone with agency over her own health story. After decades of being told her biology was her fate, she discovered she had power she had never been given permission to use.
That shift — from resignation to empowerment — is one of the most profound things I witness in this work.
Practical Steps to Start Standing Up to Your Genetics
You do not need to be a patient in my practice to begin applying these principles. Here are the foundational steps that epigenetic research consistently supports:
Prioritize an anti-inflammatory diet. The foods you eat are the most direct and frequent communication you have with your genes. Focus on whole foods, abundant plants, quality proteins, and healthy fats. Minimize processed foods, refined sugars, and inflammatory oils. Your microbiome — which is deeply intertwined with gene expression — thrives on dietary diversity and whole food nutrition.
Move your body consistently. Exercise is one of the most well documented epigenetic interventions available to us. Both cardiovascular exercise and strength training have been shown to produce beneficial epigenetic changes — and the effects are cumulative over time.
Manage your stress actively. Chronic stress is one of the most damaging epigenetic influences we know of. Breathwork, meditation, prayer, time in nature, journaling, and nervous system regulation practices are not soft suggestions — they are evidence based interventions that directly influence gene expression.
Reduce your toxic load. Choose organic produce when possible. Filter your water. Be mindful of the personal care and cleaning products you use. Limit alcohol. Avoid tobacco. The toxicants you are exposed to daily are in conversation with your genes whether you are aware of it or not.
Know your genetic blueprint. Working with a functional medicine practitioner to understand your specific genetic vulnerabilities allows you to be proactive rather than reactive. You do not have to wait for a diagnosis to start protecting your health.
Get the right lab work. Standard blood panels miss most of what functional medicine looks for. Comprehensive functional lab testing — including inflammatory markers, nutrient status, hormonal panels, microbiome assessment, and more — gives you and your practitioner the data needed to build a truly personalized plan.
Are You Brave Enough?
Standing up to your genetics is not about denial. It is not about pretending the risk does not exist. It is about looking that risk directly in the eye and saying — I see you. And I am going to do everything in my power to make sure you never define me.
The foods you choose to eat are talking to your genes. The way you manage stress is talking to your genes. The toxicants you choose to avoid, the movement you prioritize, the thoughts you cultivate — all of it is in constant conversation with your biology. And that conversation can change.
I am consistently astonished by how many people believe they are victims of their genes. They have been told a story — by a well meaning doctor, by a family history, by a number on a lab report — that has convinced them their health future is fixed.
It is not fixed. Not even close.
So I will ask you one final time: are you brave enough to stand up to your genetics?
I hope the answer is yes. Because I have seen what happens when people decide it is. And it is nothing short of remarkable.
If you are ready to stop being a bystander in your own biology and start building a plan that accounts for your unique genetic picture, I would love to connect. Book a discovery call and let’s start that conversation together.
References
Bollati, V., & Baccarelli, A. (2010). Environmental epigenetics. Heredity, 105(1), 105–112.
Frontiers in Nutrition. (2025). Epigenetic modulation by lifestyle: advances in diet, exercise, and mindfulness for disease prevention and health optimization. Frontiers in Nutrition.
