Understanding Epigenetics: How Our Lifestyle Influences Gene Activity

1. You are deeply involved in functional epigenetics. What role does epigenetic regulation play in natural aging—and what factors can help create favorable conditions for normal cellular functions? And how do you think functional epigenetics complements traditional medical diagnostics?

Dr. Reiner Kraft: Epigenetic regulation is one of the key mechanisms that determine how quickly or how healthily we age. While our genes remain largely stable, their activity changes—that is, which programs are activated or shut down within the cell. This happens continuously due to environmental stimuli, diet, stress, sleep, exercise, and biochemical signals. It is precisely these epigenetic switches that determine whether a cell repairs itself, becomes inflamed, regenerates, or ages.

Favorable conditions arise when we support the cell’s basic biological rhythms and the necessary cofactors: stable energy production in the mitochondria, sufficient micronutrients for methylation (regulation of a molecule’s activity by attaching a methyl group) and redox balance (cellular equilibrium), functioning detoxification pathways, an intact intestinal barrier, and a nervous system that does not chronically upregulate stress. All these factors modulate epigenetic patterns—sometimes within hours.

Functional epigenetics is a crucial complement to conventional diagnostics because it measures not only what is happening, but also why. Conventional medicine provides snapshots: lab values, imaging, symptoms. Functional epigenetics, on the other hand, examines the underlying regulatory axes: methylation, redox, inflammation, metabolism, and immune balance. In doing so, it identifies patterns that often become visible years before clinical findings emerge. This makes it possible to intervene early and create conditions under which cells can return to a physiologically healthy regulatory state.

In short: Genes are the hardware—epigenetics is the operating system (the “software”). And functional epigenetics helps us understand how we can support this operating system through measurable factors so that health, energy, and longevity are not left to chance but are actively shaped.

“While our genes remain largely stable, their activity changes—that is, which programs are activated or shut down in the cell. […] It is precisely these epigenetic switches that determine whether a cell repairs itself, becomes inflamed, regenerates, or ages.”

Side Fact: Epigenetics in Humans In humans, epigenetics describes reversible changes in gene activity that do not alter the DNA sequence itself. Key mechanisms include DNA methylation and histone modifications. Human studies show that factors such as diet, stress, sleep, exercise, and environmental exposures can influence epigenetic patterns and are thus involved in the regulation of normal cellular functions.

Source: Fraga MF et al. Epigenetic differences arise during the lifetime of monozygotic twins. Proc Natl Acad Sci USA. 2005.

Biological vs. Chronological Age: What Modern Analyses Can Reveal Today

2. A key focus of your work is the analysis of biological age. Which metrics provide meaningful insights into how the body reacts to stress—and how can such data be used in everyday life to maintain one’s health in the long term?

Dr. Reiner Kraft: Biological age is essentially a reflection of the question: How well does the body manage to respond to stress and subsequently return to a state of functional balance? There are several metrics for this that have proven particularly effective in practice.

1. Redox and inflammation markers: How quickly the body reduces oxidative stress and downregulates inflammatory processes is a key indicator of cellular resilience. Markers such as oxidized DNA damage, antioxidant capacity, or CRP dynamics (CRP = a specific inflammatory marker) show how stably the body’s internal repair programs are functioning.
2. Mitochondrial performance: Mitochondria react immediately to stress. ATP production (energy production), lactate dynamics (changes in cellular lactate concentration), NAD⁺ status (including signs of cell regeneration), or functional scores such as BHI (bioenergetic health index) indicate whether cells are efficiently supplying energy. A crucial factor for healthy aging.
3. Stress and regeneration indicators: HRV (heart rate variability) is the most meaningful indicator here. It shows how flexibly the autonomic nervous system responds to demands. A stable, high HRV means: The body quickly transitions from “fight-or-flight” back to regeneration.
4. Metabolic stress response: Glucose variability (fluctuations in blood glucose levels), insulin sensitivity (response to insulin), or fatty acid profile reveal how well the body switches between energy sources and copes with everyday stressors. The more stable these axes are, the “younger” the metabolism appears to be functionally.
5. Epigenetic markers: They reflect how the system reacts to the environment, lifestyle, and stress over the long term. Epigenetic age tests can reveal trends—especially when combined with functional biomarkers.

What matters is not the single measurement, but observing trends:

• Daily HRV: Early warning system for overload, sleep deprivation, and stress.
• Glucose dynamics and energy levels: Indicators of nutrition, recovery, and metabolic flexibility.
• Micronutrient and redox status (e.g., via functional measurements such as laser spectroscopy): The basis for strategically supplementing cofactors.
• Regular functional lab data: Quarterly updates on mitochondrial and inflammatory axes.

This data creates a personalized feedback system: The body “speaks,” and we can identify which habits strengthen it and which ones strain it. This is precisely where the value of functional longevity lies: Not waiting until aging processes become visible, but understanding early on in which direction the organism is developing—and taking timely countermeasures.

“Biological age is essentially a reflection of the question: How well does the body manage to respond to stress and then return to a state of functional balance? […] This is precisely where the value of functional longevity lies: not waiting until aging processes become visible, but understanding early on in which direction the organism is developing—and taking timely countermeasures.”

Side Fact: Biological Age Chronological age describes the number of years lived, while biological age reflects the functional state of cellular and regulatory processes. Human studies show that markers such as inflammatory status, metabolic parameters, and epigenetic patterns are more strongly associated with morbidity and mortality than chronological age alone.

Source: Jylhävä J, Pedersen NL, Hägg S. Biological Age Predictors. EBioMedicine. 2017.

Mitochondria & Energy: Why the “Powerhouses of Cells” Are So Relevant in the Context of Longevity

3. In epigenetics and longevity research, mitochondrial function is considered a key factor for energy and vitality. How can people support their normal energy processes in everyday life without falling into the trap of quick “biohacking tricks”?

Dr. Reiner Kraft: Mitochondria do not respond to quick tricks, but rather to the quality of our daily lives. The most important levers are surprisingly basic: good sleep, stable glucose levels, regular exercise, and genuine recovery periods for the nervous system. A balanced supply of micronutrients—through diet and, if necessary, supplemented with a supplement tailored to the individual’s situation—can also support natural energy processes without artificially pushing them. Continuity is key, not intensity. Those who establish small, reliable routines create a biological environment in which mitochondria remain efficient over the long term—without the illusion of quick biohacks.

Side Fact: Mitochondria and Aging Processes in Humans In humans, mitochondria are not only responsible for energy production but are also involved in redox regulation, immune response, and cellular stress processing. Impaired mitochondrial function is associated with reduced physical performance, increased inflammatory activity, and age-related functional changes.

Source: Picard, M., & McEwen, B. S. (2018). Psychological Stress and Mitochondria: A Conceptual Framework. Psychosomatic Medicine, 80(2), 126–140.

Individualized Micronutrient Supply: What Science Can Clearly Demonstrate

4. Many people are interested in micronutrients. Which vitamins and minerals can—within the scope of their approved effects—support normal bodily processes such as energy metabolism, cell protection, or the immune system? And what role does an individualized analysis play in this?

Dr. Reiner Kraft: Many people are interested in micronutrients. But before we talk about vitamins and minerals, the body needs something more fundamental: a stable foundation through a nutrient-rich diet for healthy cell membranes. It provides important building blocks for diverse metabolic processes in the body.

Cells function only as well as their membranes. And these consist primarily of high-quality fats, phospholipids, proteins, amino acids, and nucleotides. Without these structural building blocks, micronutrients cannot optimally fulfill their normal physiological roles. That is why a good supply of healthy oils, omega-3, phosphatidylcholine, sufficient protein—and often overlooked nucleotides—always comes first. Only then can metabolism be reliably supported. And only on this basis do vitamins and minerals unfold their recognized effects:

• B vitamins such as B1, B2, B3, B6, and vitamin B12, magnesium, and iron contribute to normal energy metabolism.
• Vitamin C, vitamin E, selenium, and zinc contribute to the protection of cells against oxidative stress.
• Vitamin D, zinc, selenium, and B vitamins such as vitamin B6 contribute to the normal function of the immune system.

However, needs vary from person to person. Diet, stress, sleep, gut function, and genetics influence where deficiencies arise. An individualized analysis—ranging from micronutrients to functional biomarkers—helps identify which building blocks are truly missing—and in what order these should be supplemented, if necessary under medical supervision, based on medical necessity and taking the individual’s situation into account.

This results in a structured approach rather than a blanket vitamin cocktail: first support the cellular structure, and then, if necessary, use micronutrients as a supplement. It is precisely this combination that creates the conditions under which the body can optimally utilize its normal energy, protective, and repair processes.

Identifying epigenetic stressors and establishing health-promoting routines

5. In your practice, you work extensively with data on stress, the environment, and lifestyle. Which everyday factors have a particularly strong influence on epigenetic mechanisms, and what simple first steps can help support a healthy balance?

Dr. Reiner Kraft: Epigenetic mechanisms are highly sensitive to our daily lives. Sleep quality, diet, stress, exercise, light, and environmental factors constantly send signals to our cells and influence which genes are active. Thus, daily life often has a greater impact on biological aging than genetics itself.

Among the strongest influencing factors are, above all, sleep and a stable daily rhythm, diet and glucose stability, stress management, environmental exposure, and the quality of mitochondrial energy production: These areas shape the cellular environment in which epigenetic regulation takes place. Basic therapy is crucial here: high-quality fats and oils, phospholipids, proteins, amino acids, and nucleotides form the structural building blocks for healthy cell membranes. I’ve already mentioned this. Without this foundation, cells cannot reliably carry out their normal repair and regulatory processes.

Simple steps help in everyday life: regular sleep, morning sunlight, short breathing and mindfulness breaks, a diet that minimizes blood sugar fluctuations, daily moderate exercise, and a conscious reduction of unnecessary environmental stressors. Small, consistent decisions create an environment in which epigenetic processes can regain balance.

Functional Diagnostics as a Guide: How Data Helps Set Priorities

6. You use functional analyses to reveal individual patterns. What kind of results does this diagnostic approach provide, and where do you see its limitations—that is, areas where traditional medical diagnostics are still clearly needed? How can people use this information to specifically work on normal regeneration, energy production, or cellular processes?

Dr. Reiner Kraft: Functional analyses do not provide diagnoses, but they reveal how well fundamental biological processes function in everyday life. For example, we see how stable energy metabolism is, what the redox balance looks like, how the nervous system reacts to stress, or whether the supply of important micronutrients is sufficient. Such data helps identify patterns that explain why people feel exhausted, regenerate less effectively, or have lower resilience, even in the absence of a medical condition.

The boundaries here are clear. As soon as diseases, pathological findings, or therapeutic decisions are involved, classical medical diagnostics take precedence, including laboratory tests, imaging, and specialist evaluation. Functional analyses do not replace this; they complement it. They do not reveal disease patterns, but rather functional states.

The benefit for everyday life lies in the fact that people can use this information to specifically work on normal bodily functions. This includes laying the foundation for stable cellular processes. As mentioned, we always begin with a foundational therapy—that is, a diet rich in healthy fats and phospholipids for cell membranes, as well as sufficient proteins, amino acids, and nucleotides as structural building blocks—supplemented, if necessary, with appropriate supplements following medical consultation and when medically necessary. Only once this foundation is in place can micronutrients exert their approved effects, for example in the context of normal energy metabolism, the immune system, or cell protection.

Functional data then helps inform decisions. Is sleep truly restorative? Is the nervous system responding flexibly enough? Are there indications that certain micronutrients are needed in greater quantities for normal metabolic processes? People can adjust their routines, diet, recovery windows, and exercise intensity and observe how these parameters develop.

This creates a practical advantage. Diagnostics reveal where the body needs support for normal, healthy functions, while conventional medicine ensures that nothing requiring medical treatment is overlooked. Together, this creates a very clear, responsible path to working on energy, regeneration, and cellular foundations—without exaggerated promises, but with measurable progress.

The Future of Longevity: What Role Personalized Approaches Might Play in the Future

7. Research on epigenetics and longevity is advancing rapidly. Which scientific developments or technological tools do you currently consider particularly promising when it comes to helping people maintain their vitality? And what should people be mindful of to ensure they don’t view longevity strategies as a substitute for medical treatment?

Dr. Reiner Kraft: Research on epigenetics and longevity is making enormous strides. I currently find technologies that make functional data suitable for everyday use particularly exciting. Wearables (mobile devices such as fitness trackers), continuous stress and sleep analyses, modern micronutrient screenings, or tools for assessing mitochondrial function now provide insights that were previously only possible in specialized laboratories. They don’t indicate diseases, but rather functional states—that is, how well the body regulates, regenerates, and provides energy in everyday life.

This is exactly where our approach with EVER (my health tech startup) comes in. We view longevity as a kind of “operating system” that brings together various data streams. Instead of measuring only individual factors, we combine information on sleep, stress, nutrition, micronutrient intake, mitochondrial activity, and environmental stressors to form a clear picture. You could say: We’re creating a Longevity OS (OS = Operating System) that helps people understand which everyday decisions support their vitality and where they can take corrective action. This integrated approach will be a key advancement in the coming years because it reduces complexity and empowers people to take action.

Despite all technological possibilities, however, an important limitation remains. Longevity strategies do not replace diagnostics or treatment. When symptoms arise, lab values are abnormal, or a disease is suspected, conventional medicine is indispensable. Functional tools provide early indicators and guidance, but they must never replace the medical professional’s perspective.

The most sensible approach is therefore a combination: technology for self-monitoring, functional analyses for pattern recognition, and medical diagnostics as soon as pathological issues arise. This triad creates a responsible path to maintaining vitality without conveying a false sense of security.

“Longevity strategies do not replace diagnostics or treatment. […] Functional tools provide early indicators and guidance, but they must never replace a medical professional’s assessment. The most sensible approach is therefore a combination: technology for self-monitoring, functional analyses for pattern recognition, and medical diagnostics as soon as pathological issues arise.”

From Data to Daily Life: How Insights Become Sustainable Habits

8. Many people today are aware of their tracking data, but putting it into practice is difficult. What strategies have proven effective in your work to help people establish long-term behaviors that support their normal bodily and metabolic functions?

Dr. Reiner Kraft: Many people today collect an impressive amount of data about themselves: sleep, stress, steps, heart rate. Yet there is often a gap between knowledge and implementation. My work has shown that change succeeds when people not only see the data but also understand how to use it in their daily lives, and when the experience is enjoyable rather than creating pressure.

The most important step is to break down behavioral change into small, manageable units. Biology loves consistency, not perfection. Even a ten percent improvement in sleep hygiene, a more stable rhythm, or regular small bursts of movement can noticeably support normal metabolic and regenerative processes. People stick with it longer when they directly experience the effects of such mini-steps.

Equally crucial is a system that makes feedback understandable. That’s exactly why we developed the EVER app. It translates complex longevity data into clear, practical recommendations and uses elements of gamification: daily micro-challenges, progress rings, levels, visualizations of trends, or small “wins” that make the process playful. When health is experienced as something that brings joy and motivation, the likelihood of forming sustainable habits increases dramatically.

It’s not about implementing everything at once. People need guidance, structure, and a common thread. The app helps set priorities and shows which two or three habits have the greatest impact on normal bodily and metabolic functions, such as sleep, cell membrane-based therapy, or stress management.

The key point: Behavior doesn’t change solely through information, but through experienced self-efficacy. When someone sees that a small routine actually improves their energy levels or sleep score, motivation arises from within. We use precisely this principle to make longevity not only understandable but also tangible.