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Lexicon
Lexicon · Foundational TermsWhat Do Epigenetic Terms Like GrimAge and DunedinPACE Mean?
A registry of foundational epigenetic terminology across all nine layers — clock models, molecular biology, nutrition, circadian science, performance, research infrastructure, and practices. Definitions are objective and scientific.
EpigeneticsThe study of heritable changes in gene expression that do not involve alterations to the underlying DNA sequence. Epigenetic marks are dynamic — responsive to environment, age, and behaviour.
GenomeThe complete set of genetic instructions encoded in DNA within an organism. The genome is largely fixed from conception; the epigenome layered above it is not.
EpigenomeThe full set of chemical modifications to DNA and histones across the genome. Unlike the genome, the epigenome changes throughout life in response to lifestyle, environment, and aging.
BiomarkerA measurable biological indicator of a health state, disease process, or physiological response. Epigenetic biomarkers derived from blood or saliva can now estimate biological age with clinical precision.
HomeostasisThe tendency of biological systems to maintain stable internal conditions despite external changes. Epigenetic regulation is a core mechanism of cellular homeostasis.
AdaptationThe biological process by which an organism adjusts to environmental stressors. Epigenetic changes are a primary vehicle for short- and long-term physiological adaptation.
Systems BiologyAn approach to biology that studies the interactions within complex biological systems, rather than individual components in isolation. Essential for understanding aging as a multi-system process.
Precision MedicineHealthcare tailored to the individual's biology, environment, and lifestyle rather than population averages. Epigenetic profiling is a foundational layer of precision medicine.
Cellular RepairThe suite of molecular processes by which cells detect and correct damage to DNA and other structures. Declines in cellular repair capacity are a hallmark of biological aging.
Oxidative StressAn imbalance between reactive oxygen species (free radicals) and antioxidant defences. Chronic oxidative stress drives epigenetic aging and is associated with nearly all age-related diseases.
InflammationThe immune system's response to injury or pathogens. Chronic low-grade inflammation — called inflammaging — is a central driver of biological age acceleration.
MitochondriaOrganelles responsible for producing cellular energy (ATP). Mitochondrial health is tightly linked to epigenetic aging, and mitochondrial decline is a key hallmark of biological aging.
Human RegulationThe integrated network of biological, hormonal, neural, and epigenetic systems that maintain function across the human body. The organising concept of the atlas.
Biological SystemsOrganised networks of biological components — cells, organs, pathways — that interact to perform collective functions. Aging is understood as the progressive dysregulation of these systems.
Epigenetic ClockA mathematical model that estimates biological age from DNA methylation patterns at specific CpG sites. Trained on known-age samples and validated against health and mortality outcomes.
Biological AgeA functional estimate of how old the body's cells and systems are, independent of the calendar. Can diverge from chronological age by a decade or more depending on lifestyle and genetics.
Chronological AgeThe number of years elapsed since birth. Unlike biological age, it cannot be changed and does not reflect the functional state of cells, tissues, or organs.
DNA Methylation AgeThe biological age estimate produced by an epigenetic clock algorithm, based on the methylation levels at selected CpG sites. The primary output of Horvath-type clock calculations.
Age AccelerationThe difference between biological age and chronological age. Positive acceleration (bio older than chron) is associated with higher disease risk and shorter lifespan.
Biological AgingThe progressive decline in cellular function, repair capacity, and physiological resilience that occurs over time. Measurable via epigenetic clocks at the molecular level.
Aging BiomarkersMeasurable indicators of biological aging state, including methylation clocks, telomere length, inflammatory markers, and metabolic panels. Used to track intervention efficacy.
CpG SitesGenomic locations where a cytosine is followed by a guanine. The primary sites of DNA methylation in mammals and the measurement points for all epigenetic clock algorithms.
Epigenetic DriftThe gradual, stochastic loss of methylation patterning fidelity that accumulates with age. A major driver of epigenetic clock advancement and age-related gene expression dysregulation.
Methylation PatternsThe genome-wide distribution of methyl groups across CpG sites. These patterns are tissue-specific, age-associated, and the primary data substrate for epigenetic clock algorithms.
Horvath ClockThe first-generation epigenetic clock (2013), using 353 CpG sites to estimate biological age across multiple tissue types. Accurate to ±3.6 years and remains the field's foundational reference.
Hannum ClockA first-generation blood-specific epigenetic clock (2013), developed concurrently with the Horvath clock. Uses 71 CpG sites and is optimised for whole blood methylation profiles.
GrimAgeA second-generation clock trained to predict time-to-death using DNA methylation surrogates of mortality-related plasma proteins. Currently the strongest epigenetic predictor of lifespan.
PhenoAgeA second-generation clock (Levine 2018) trained on clinical phenotypic markers including glucose, CRP, and albumin. Strong predictor of chronic disease, functional decline, and mortality.
DunedinPACEA third-generation clock measuring the speed of aging rather than absolute biological age. Derived from the Dunedin longitudinal cohort — one unit equals one year of biological aging per calendar year.
Skin & Blood ClockA clock model developed for skin and blood tissue specifically, demonstrating that epigenetic age can be measured non-invasively and that skin aging reflects systemic biological aging.
HealthspanThe period of life lived in good health, free from chronic disease and significant functional decline. The primary target of longevity medicine — extending healthspan, not merely lifespan.
LifespanThe total duration of an organism's life from birth to death. Modern longevity science seeks to extend both lifespan and healthspan simultaneously.
Mortality RiskThe probability of death within a given time period, estimated from biomarkers, lifestyle factors, and clinical data. Epigenetic clocks such as GrimAge are among the strongest molecular predictors.
Aging RateThe speed at which biological aging progresses, measurable via clocks such as DunedinPACE. Intervention studies use aging rate as the primary outcome metric.
Biomarker PanelsCollections of multiple biological measurements combined to provide a more complete picture of aging state than any single marker. Epigenetic clocks are often combined with metabolic and inflammatory panels.
LongevityLong duration of life, particularly in good health. In scientific usage, longevity research seeks to understand the biological mechanisms that determine how long organisms live and age well.
RejuvenationThe partial or full reversal of biological aging markers, returning cells or tissues toward a younger state. Demonstrated in animal models via partial epigenetic reprogramming.
Cellular SenescenceA state in which cells permanently stop dividing and begin secreting inflammatory signals (the SASP). Accumulation of senescent cells is a hallmark of aging and drives tissue dysfunction.
SenolyticsDrugs or interventions that selectively clear senescent cells from tissue. Among the most promising therapeutic directions in longevity medicine. Quercetin and dasatinib are early candidates.
AutophagyThe cellular process of degrading and recycling damaged components. Declines with age; stimulated by fasting and caloric restriction. Critical for cellular housekeeping and longevity.
ProteostasisThe maintenance of a healthy, functional protein population within cells. Proteostasis decline — the accumulation of misfolded proteins — is a hallmark of aging and neurodegenerative disease.
InflammagingThe chronic, low-grade systemic inflammation that develops with aging. A major driver of age-related disease and biological age acceleration, measurable via inflammatory biomarkers.
GeroscienceThe scientific field studying the relationship between aging biology and age-related disease. Proposes that targeting aging itself, rather than individual diseases, is the most efficient medical strategy.
mTORMechanistic target of rapamycin — a central nutrient-sensing pathway that regulates cell growth and autophagy. Inhibition of mTOR extends lifespan in multiple model organisms and is a primary longevity research target.
AMPKAMP-activated protein kinase — an energy-sensing enzyme activated during fasting and exercise. Promotes autophagy, mitochondrial biogenesis, and metabolic flexibility associated with slower biological aging.
SirtuinsA family of NAD+-dependent proteins (SIRT1–7) that regulate gene expression, DNA repair, and metabolism. Sirtuins are central regulators of the aging process and major targets in longevity research.
IGF-1Insulin-like growth factor 1 — a hormone that promotes cell growth and division. Reduced IGF-1 signalling is associated with extended lifespan in model organisms; the relationship in humans is complex.
FOXO PathwaysForkhead transcription factors that regulate stress resistance, metabolism, and cell survival. FOXO3 variants are consistently enriched in centenarian populations across diverse genetic backgrounds.
Caloric RestrictionReducing caloric intake without malnutrition. The most robustly studied longevity intervention — extends lifespan in every organism tested and reduces biological age markers in humans.
FastingVoluntary abstention from food for defined periods. Triggers autophagy, reduces inflammation, and shifts methylation patterns associated with slower aging. Effects are dose- and protocol-dependent.
Time-Restricted FeedingEating within a defined daily window (typically 6–10 hours), aligned with circadian rhythms. Associated with improvements in metabolic markers, inflammation, and epigenetic aging indicators.
SaunaRepeated heat exposure shown to improve cardiovascular function, reduce inflammatory markers, and activate heat shock proteins. Epidemiological data links regular sauna use to reduced all-cause mortality.
Cold ExposureDeliberate exposure to cold temperatures activates brown adipose tissue, reduces inflammation, and triggers adaptive hormetic responses. Evidence for direct epigenetic effects is emerging.
DNA MethylationThe addition of a methyl group (CH₃) to cytosine at CpG dinucleotides. Regulates gene expression without altering the DNA sequence. Shifts predictably with age and is the basis of all epigenetic clocks.
Histone ModificationChemical changes to histone proteins around which DNA is wrapped. Acetylation, methylation, and phosphorylation of histones alter chromatin structure and gene accessibility.
Chromatin RemodelingThe dynamic restructuring of chromatin architecture to regulate access to DNA for transcription, repair, and replication. Declines in remodeling fidelity are a hallmark of cellular aging.
Gene ExpressionThe process by which information encoded in a gene is transcribed into RNA and translated into protein. Epigenetic marks are the primary regulators of which genes are expressed in which cells.
CpG IslandsRegions of the genome with high CpG dinucleotide density, typically found near gene promoters. Often unmethylated in active genes; aberrant methylation of CpG islands is associated with aging and cancer.
Transcription FactorsProteins that bind to specific DNA sequences and regulate the transcription of genes. Interact with epigenetic marks to determine cell-type-specific gene expression programmes.
Epigenetic RegulationThe control of gene activity through chemical modifications to DNA and histones, without changes to the nucleotide sequence. The primary mechanism by which environment influences gene expression.
EWASEpigenome-Wide Association Study — a research approach scanning hundreds of thousands of CpG sites across the genome to identify methylation patterns associated with traits, diseases, or aging.
Histone AcetylationThe addition of an acetyl group to histone lysine residues, generally associated with open chromatin and active gene transcription. Regulated by HAT and HDAC enzyme families.
DNMT EnzymesDNA methyltransferases — enzymes that add methyl groups to cytosine. DNMT1 maintains methylation patterns during cell division; DNMT3A and DNMT3B establish new methylation marks.
TET EnzymesTen-eleven translocation enzymes that oxidise 5-methylcytosine, initiating active DNA demethylation. Required for epigenetic reprogramming and the restoration of younger methylation states.
RNA MethylationChemical modification of RNA molecules (particularly m6A methylation of mRNA) that regulates RNA stability, splicing, and translation. An emerging layer of epigenetic control beyond DNA.
Non-Coding RNARNA molecules that do not encode proteins but regulate gene expression epigenetically. MicroRNAs and long non-coding RNAs are key mediators of epigenetic silencing and chromatin organisation.
Chromatin AccessibilityThe degree to which DNA is physically accessible to transcription machinery. Open chromatin indicates active regions; closed or condensed chromatin indicates silenced regions. Changes with aging.
Methyl DonorsNutrients that supply methyl groups for methylation reactions throughout the body. Include folate, choline, betaine, and methionine. Deficiency is linked to hypomethylation and accelerated biological aging.
FolateVitamin B9 — essential for one-carbon metabolism and DNA methylation. Critical for producing SAMe, the universal methyl donor. Found in leafy greens, legumes, and fortified foods.
Vitamin B12A cofactor in one-carbon metabolism, working alongside folate to support methylation capacity. B12 deficiency is common and associated with elevated homocysteine and impaired epigenetic maintenance.
SAMeS-adenosylmethionine — the primary methyl donor for DNA, RNA, and protein methylation reactions throughout the body. Synthesised from methionine with folate and B12 as cofactors.
HomocysteineA metabolic intermediate in one-carbon metabolism. Elevated homocysteine indicates impaired methylation capacity and is associated with cardiovascular disease and accelerated biological aging.
PolyphenolsPlant-derived compounds with antioxidant and epigenetic modulatory properties. Many polyphenols inhibit DNMT or HDAC enzymes, influencing methylation patterns and histone modification.
NutrigenomicsThe science of how nutrients interact with the genome to influence gene expression and health. A subset of nutrigenomics focuses specifically on dietary epigenetic effects.
Nutritional EpigeneticsThe study of how dietary patterns, specific nutrients, and food compounds modulate epigenetic marks and gene expression. One of the fastest-growing areas of nutrition science.
Gut MicrobiomeThe community of trillions of microorganisms inhabiting the gastrointestinal tract. Produces short-chain fatty acids — including butyrate — that act as epigenetic modulators throughout the body.
KetosisA metabolic state in which the body primarily burns fat for fuel, producing ketone bodies. Associated with reduced inflammation, improved mitochondrial function, and changes in epigenetic markers.
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ResveratrolA polyphenol found in red grapes and berries, studied for sirtuin activation and anti-inflammatory effects. Evidence for direct longevity effects in humans remains mixed but mechanistically compelling.
CurcuminThe active compound in turmeric, with demonstrated DNMT and HDAC inhibitory properties. Reduces inflammatory gene expression epigenetically; bioavailability is a limiting factor.
SulforaphaneA compound derived from cruciferous vegetables (especially broccoli sprouts) with potent HDAC inhibitory and Nrf2-activating properties. One of the most studied dietary epigenetic compounds.
EGCGEpigallocatechin gallate — the primary polyphenol in green tea. Inhibits DNMT enzymes and has demonstrated anti-inflammatory and epigenetic remodeling effects in multiple cell types.
Omega-3Polyunsaturated fatty acids (EPA and DHA) with anti-inflammatory properties. Associated with reduced methylation of inflammatory gene promoters and improved epigenetic aging markers.
SpermidineA polyamine found in wheat germ, legumes, and aged cheese that strongly induces autophagy. Associated with epigenetic rejuvenation effects and extended lifespan in model organisms.
Mediterranean DietA dietary pattern emphasising olive oil, fish, legumes, vegetables, and moderate wine. Associated with reduced biological age acceleration and lower inflammatory methylation signatures in population studies.
Intermittent FastingCycling between periods of eating and fasting. Activates autophagy, reduces mTOR signalling, and has shown reductions in epigenetic age in clinical trials including the TRIIM study.
Ketogenic DietA very low carbohydrate, high fat diet producing ketosis. Associated with HDAC inhibition via beta-hydroxybutyrate, anti-inflammatory epigenetic effects, and improved metabolic biomarkers.
Circadian RhythmThe approximately 24-hour biological cycle governing sleep-wake, hormone release, metabolism, and cellular repair. Disruption is associated with accelerated epigenetic aging and increased disease risk.
ChronobiologyThe scientific study of biological time — the cyclical patterns of physiological processes. Chronobiology establishes that the timing of eating, light exposure, and activity is as important as their quantity.
MelatoninA hormone produced by the pineal gland in response to darkness, signalling sleep onset. Also acts as an antioxidant and epigenetic regulator — modulating methylation of inflammatory genes.
Sleep ArchitectureThe cyclical structure of sleep stages — NREM (light, deep) and REM — across a night. Deep NREM sleep is the primary window for cellular repair, DNA maintenance, and epigenetic resetting.
Clock GenesGenes encoding proteins of the circadian clock mechanism (CLOCK, BMAL1, PER1/2, CRY1/2). Expressed in virtually every cell and regulate thousands of downstream genes in rhythmic patterns.
Light ExposureThe primary environmental signal (zeitgeber) that synchronises the circadian clock. Morning light entrains circadian rhythms; evening artificial light delays melatonin and disrupts biological timing.
Cortisol RhythmThe daily arc of cortisol secretion — peaking in the morning to promote alertness, declining through the day. Disrupted cortisol rhythms are associated with epigenetic aging and metabolic dysregulation.
Circadian MisalignmentThe state in which biological clocks are out of phase with environmental and social time cues. Experienced by shift workers, frequent travellers, and those with highly irregular sleep schedules.
ChronotypeAn individual's natural preference for sleep and activity timing, ranging from early (lark) to late (owl). Determined partly by genetics via clock gene variants; shifts earlier with age.
Sleep EpigeneticsThe study of how sleep duration, quality, and timing influence DNA methylation patterns. Chronic sleep restriction accelerates epigenetic aging; recovery sleep can partially restore methylation profiles.
BMAL1Brain and Muscle ARNT-Like 1 — a core transcription factor of the circadian clock. Forms a complex with CLOCK to drive rhythmic gene expression. BMAL1 expression declines with age.
CLOCK GeneCircadian Locomotor Output Cycles Kaput — a transcription factor that partners with BMAL1 to activate circadian gene expression. Mutations affect circadian period length and sleep behaviour.
PER GenesPeriod genes (PER1, PER2, PER3) encoding proteins that form the negative feedback arm of the circadian clock. Their accumulation represses CLOCK/BMAL1 activity to complete the 24-hour cycle.
CRY ProteinsCryptochrome proteins (CRY1, CRY2) that partner with PER proteins in the negative feedback loop of the circadian clock. Essential for maintaining circadian rhythm period and amplitude.
HormesisA biological principle in which low doses of a stressor produce beneficial adaptive responses. Exercise, cold exposure, heat, and fasting all operate via hormetic mechanisms to improve biological resilience.
Mitochondrial HealthThe functional integrity of mitochondria — including their number, efficiency, and quality control. Mitochondrial dysfunction is a hallmark of aging; exercise is the most potent stimulus for mitochondrial biogenesis.
VO2 MaxMaximum oxygen uptake during exercise — the gold standard measure of cardiovascular fitness. One of the strongest single predictors of longevity; each unit increase is associated with measurable reductions in biological age.
Recovery BiomarkersMeasurable indicators of physiological recovery state after exercise or stress. Include HRV, resting heart rate, inflammatory markers, and epigenetic aging indicators in research settings.
Exercise EpigeneticsThe study of how physical activity modulates DNA methylation, histone modification, and gene expression. Acute exercise triggers genome-wide methylation changes that accumulate with regular training.
HRVHeart Rate Variability — the variation in time between heartbeats. A measure of autonomic nervous system function and physiological resilience. Higher HRV is associated with slower biological aging and better recovery.
Metabolic FlexibilityThe ability to efficiently switch between carbohydrate and fat as fuel sources depending on availability and demand. Declines with aging and sedentary behaviour; restored through regular exercise and dietary modification.
Resistance TrainingExercise using external load to stimulate muscular adaptation. Preserves muscle mass, bone density, and metabolic rate with aging. Associated with reduced biological age in epigenetic studies.
Aerobic CapacityThe cardiovascular system's ability to deliver and utilise oxygen during sustained exercise. Measured by VO2 max; declines ~10% per decade without training but is highly responsive to intervention.
Zone 2 TrainingLow-intensity aerobic exercise at approximately 60–70% of maximum heart rate. The primary stimulus for mitochondrial biogenesis and metabolic flexibility; foundational to longevity-oriented fitness.
Recovery PhysiologyThe biological processes — repair, adaptation, glycogen replenishment, protein synthesis — occurring between exercise bouts. Adequate recovery is where epigenetic adaptations to training are consolidated.
PubMedThe National Library of Medicine's free database of over 35 million biomedical citations. The primary entry point for epigenetics research, with links to full text for a large proportion of indexed articles.
bioRxivA preprint server for biological sciences where researchers share findings before peer review. New epigenetics research typically appears here months before journal publication.
medRxivA preprint server for health and clinical sciences. Clinical aging and longevity trials often appear here first. Not yet peer-reviewed — important caveat when interpreting results.
OpenAlexAn open, fully free index of global research output with a powerful API. Tracks citation networks, institutional output, and topic relationships — excellent for mapping the epigenetics field.
Semantic ScholarAn AI-powered academic search engine that identifies influential papers, key authors, and citation relationships. Particularly useful for discovering non-obvious connections across the epigenetics literature.
CrossrefA DOI registration agency and metadata database for academic publications. Used by researchers and developers to access citation data and verify publication details programmatically.
NIHNational Institutes of Health — the primary US federal funder of biomedical research. The NIA (National Institute on Aging) is the primary NIH institute funding epigenetic aging research.
NCBINational Center for Biotechnology Information — the NIH division hosting PubMed, GenBank, and numerous other biological databases. A central infrastructure node for all epigenetics research.
Meta-analysisA statistical analysis combining results from multiple independent studies to produce a higher-powered estimate of an effect. The highest level of evidence for most research questions in epigenetics.
Randomised Controlled TrialA study in which participants are randomly assigned to intervention or control groups. The gold standard for establishing causality — increasingly used in epigenetic clock intervention research.
Cohort StudyA longitudinal study following a defined group over time to observe health outcomes. Major aging cohorts — UK Biobank, Framingham, Dunedin — provide the data underpinning most epigenetic clock research.
Longitudinal StudyResearch tracking the same individuals across multiple time points. Essential for measuring aging trajectories and the effects of interventions on biological age over time.
Systematic ReviewA comprehensive review of all available evidence on a specific research question, using explicit, reproducible methods. Provides the most reliable synthesis of the epigenetics intervention literature.
EWASEpigenome-Wide Association Study — scans methylation levels at hundreds of thousands of CpG sites across the genome to identify associations with traits, exposures, diseases, or aging.
Buck InstituteThe world's first independent research institution focused solely on aging science. Based in Novato, California — publishes foundational work on cellular senescence, epigenetics, and longevity pathways.
Salk InstituteA leading biological research institute in La Jolla, California. Home to research on epigenetic reprogramming and partial rejuvenation, including foundational Yamanaka factor studies in aging.
Broad InstituteA joint MIT/Harvard research institute leading in genomics and epigenomics. Develops tools for large-scale epigenetic profiling and houses major aging and disease genomics datasets.
Longevity BiotechnologyThe biotech sector developing therapeutics, diagnostics, and tools targeting the biology of aging. Includes companies working on senolytics, epigenetic reprogramming, and biological age testing.
FDA ApprovalRegulatory clearance for a drug or diagnostic from the US Food and Drug Administration. Aging itself is not yet an approved indication — the FDA's Project Blueprint aims to change this.
Patent FilingsApplications to protect intellectual property in early-stage innovation. Patent databases are a leading indicator of emerging technology directions, often years before clinical or commercial stage.
Clinical TrialsStructured studies testing interventions in human participants across defined phases. ClinicalTrials.gov tracks all registered trials — including a growing number using epigenetic clocks as primary endpoints.
Venture CapitalEarly-stage investment funding for high-growth companies. Longevity biotech has attracted significant VC interest since 2018, with several companies raising hundreds of millions of dollars in single rounds.
Series A FundingThe first significant round of institutional venture funding after seed investment. Series A in longevity biotech typically indicates a company has moved from concept to early clinical or preclinical validation.
Precision MedicineHealthcare tailored to individual biology, environment, and lifestyle rather than population averages. Epigenetic profiling — including biological age testing — is a foundational precision medicine tool.
Longevity ClinicsMedical facilities offering biological age testing, personalised longevity protocols, and preventive interventions. A rapidly growing sector bridging research and direct-to-consumer healthcare.
Diagnostic PlatformsTechnologies that measure biological markers for health assessment. Epigenetic diagnostic platforms use methylation arrays or sequencing to produce biological age estimates from a blood or saliva sample.
AI Drug DiscoveryThe use of machine learning to identify drug candidates and targets. Applied to aging, AI systems are being used to discover senolytic candidates and predict epigenetic intervention effects.
Aging TherapeuticsDrugs or biological interventions targeting the mechanisms of aging — including senolytics, mTOR inhibitors, NAD+ precursors, and epigenetic reprogramming approaches.
MeditationA practice of directed attention and mental stillness, shown to reduce cortisol, lower inflammatory gene expression, and slow telomere attrition. Associated with reduced epigenetic age in experienced practitioners.
BreathworkDeliberate control of breathing patterns to influence nervous system state. Techniques such as slow diaphragmatic breathing and box breathing activate the parasympathetic nervous system and reduce stress-related gene expression.
YogaA practice combining movement, breathwork, and focused attention. Associated with reduced cortisol, improved HRV, decreased inflammatory markers, and slower biological aging in long-term practitioners.
Tai ChiA Chinese practice of slow, coordinated movement combined with breath and attention. Evidence supports benefits for balance, inflammation, immune function, and epigenetic aging markers in older populations.
QigongA Chinese system of movement, breathing, and meditation. Shown to reduce oxidative stress and inflammatory markers. Emerging evidence suggests epigenetic effects through stress reduction and autonomic regulation.
Nervous System RegulationThe practice of deliberately shifting the autonomic nervous system toward parasympathetic dominance through breathwork, movement, and rest. Reduces cortisol-driven epigenetic aging and inflammatory gene expression.
Parasympathetic ActivationEngagement of the "rest and digest" branch of the autonomic nervous system. Associated with reduced cortisol, improved HRV, lower inflammation, and epigenetic changes that favour cellular repair.
MindfulnessNon-judgmental awareness of present-moment experience. Clinically studied for reductions in stress-related gene expression, inflammatory biomarkers, and biological age acceleration in long-term practitioners.
Vagal ToneThe activity level of the vagus nerve, the primary parasympathetic pathway. High vagal tone is associated with better HRV, reduced inflammation, and slower biological aging. Trainable through breathwork and cold exposure.
MobilityThe ability to move joints through their full range of motion with control. Functional mobility declines with biological aging; practices that maintain it are associated with longer healthspan and lower mortality risk.
Stress ReductionThe lowering of physiological stress responses — cortisol, sympathetic activation, inflammatory signalling. Chronic stress is a primary driver of epigenetic age acceleration; its reduction is measurable in clock studies.
Cortisol RegulationThe maintenance of healthy cortisol rhythms — high in the morning, low in the evening. Dysregulated cortisol patterns are associated with accelerated epigenetic aging and immune dysfunction.
NeuroplasticityThe brain's ability to reorganise and form new neural connections. Meditation and mindfulness practices promote neuroplasticity through epigenetic changes in gene expression patterns in brain tissue.
Inflammation ModulationThe active regulation of inflammatory pathways through lifestyle, diet, and practice. Mind-body practices reduce NF-κB-driven inflammatory gene expression through epigenetic mechanisms.
Mind-Body MedicineThe field studying interactions between psychological processes and physical health. Demonstrates that mental states produce measurable epigenetic changes — a bridge between subjective practice and molecular biology.
Behavioral EpigeneticsThe study of how behaviours — sleep, stress, social connection, exercise, practice — leave measurable marks on the epigenome. One of the fastest-growing areas of translational research.
PsychoneuroimmunologyThe study of interactions between psychological processes, the nervous system, and the immune system. Provides the biological framework for understanding how mental practices affect epigenetic aging markers.
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