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SRC - Epigenetics

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SRC - Epigenetics

Folder: 05 - SOURCE MATERIAL Supporting: Epigenetics

Primary Research — Mechanisms

eLife — Johnston et al. (2024) “Epigenetics: Linking environmental factors and gene regulation” https://elifesciences.org/articles/96710 Duke University / international team. mSTARR-seq technique. DNA methylation impacts activity of almost half of known regulatory regions confirmed. Genome-wide role of methylation in gene regulation confirmed. Honest caveat: methylation marks linked to childhood adversity may serve as indicators of exposure rather than cause gene expression changes — tissue specificity matters.

MDPI Medicine (2024) “Epigenetic and Coping Mechanisms of Stress in Affective Disorders” https://www.mdpi.com/1648-9144/60/5/709 33 studies, PRISMA guidelines. Stress-related gene methylation in affective disorders confirmed. Nr3c1, SLC6A4, BDNF changes confirmed.

ScienceDirect — Domschke (2020) “The applied implications of epigenetics in anxiety, affective and stress-related disorders” https://www.sciencedirect.com/science/article/pii/S0272735820300180 Confirms: epigenetic alterations reversible by psychotherapy. FKBP5 methylation change with CBT in PTSD confirmed.

Stress and Epigenetics

Journal of Laboratory and Precision Medicine (July 2025) “Impact of social stress on epigenetics: an updated narrative review” https://jlpm.amegroups.org/article/view/10317/html PubMed search Jan 2015–June 2025. Social stressors confirmed to perturb epigenetic machinery. Maternal stress during pregnancy perturbs child and mother epigenome. Intergenerational inheritance of stress biomarkers confirmed. COVID work stress epigenetic effects documented.

PMC — Champagne (2014) “Epigenetic Influence of Stress and the Social Environment” https://pmc.ncbi.nlm.nih.gov/articles/PMC4021821/ Maternal care and early-life stress epigenetic effects in animal models confirmed. Prenatal stress, maternal separation, adult social stress and DNA methylation/histone modification documented.

PMC — Childhood Trauma Epigenetic Changes https://pmc.ncbi.nlm.nih.gov/articles/PMC6857662/ Nr3c1, OXTR, SLC6A4, BDNF — reproducibly showing epigenetic changes across all stress types. Transgenerational effects documented in animal studies.

Transgenerational Inheritance

Scientific Reports — February 27, 2025 Panter-Brick et al. (Yale) “Epigenetic signatures of intergenerational exposure to violence in three generations of Syrian refugees” https://www.nature.com/articles/s41598-025-89818-z Three generations examined. 850,000 DNA methylation sites. 14 DMPs associated with germline exposure. 21 with direct exposure. Grandchildren of violence-exposed grandmothers show altered epigenetic markings. verified

PMC — Yehuda & Lehrner (2018) “Intergenerational transmission of trauma effects” https://pmc.ncbi.nlm.nih.gov/articles/PMC6127768/ Dutch hunger cohort confirmed. 422 exposed vs 463 controls. Grandchildren adiposity effects. Grandmaternal stress genome-wide methylation changes in grandchildren. Sperm microRNA transmission mechanism confirmed in mice.

PMC — Transgenerational Epigenetics of Traumatic Stress https://pmc.ncbi.nlm.nih.gov/articles/PMC9859285/ Comprehensive review. HPA axis modulation confirmed. Sperm RNA as transmission mechanism confirmed. Blunted cortisol response in offspring of stressed males.

Scientific American — Yehuda (2024) “How Parents’ Trauma Leaves Biological Traces in Children” https://www.scientificamerican.com/article/how-parents-rsquo-trauma-leaves-biological-traces-in-children/ Cherry blossom mouse experiment confirmed. Two generation transmission confirmed. Holocaust PTSD cortisol mechanism confirmed. CBT epigenetic reversal confirmed.

Science — Skinner quote “If what your grandmother and grandfather were exposed to is going to change your disease risk, the things we’re doing today that we thought were erased are affecting our great-great-grandchildren.” Michael Skinner, Washington State University. Via: Science AAAS article above.

OxJournal — 2025 “Epigenetic Inheritance of Trauma Across Generations” https://www.oxjournal.org/epigenetic-inheritance-of-trauma-across-generations/ Holocaust survivor children higher PTSD rates confirmed. Szyf “trauma may be inherited” confirmed.

The Honest Counterpoint

Columbia University — Katherine Crocker “There’s a lot of overinterpretation of initial results. What is out there in the public mind about epigenetics probably can never be proved.” Via: Science AAAS article above.

eLife — Johnston et al. (2024) Important caveat: methylation marks from childhood adversity studied in blood/saliva/buccal samples may not represent what occurs in brain or other target tissues. Causal role unclear across tissue types. This limits direct clinical interpretation.

Honest position on human transgenerational inheritance: Animal models: convincing. Simple organisms: definitive. Humans: compelling but limited by sample size and confounders. Specific mechanism for surviving fertilisation reprogramming: still being established. Tag: credible — not verified for the full human multi-generational picture.

Still To Source

  • Electromagnetic exposure and specific epigenetic changes — peer reviewed studies directly linking WiFi/5G to methylation changes investigate
  • Exercise epigenetic mechanisms — specific genes and methylation changes from aerobic exercise — primary citations investigate
  • Meditation and epigenetics — peer reviewed studies on mindfulness and methylation #investigate
  • Diet and methyl donors — specific foods and epigenetic restoration primary citations #investigate
  • Dutch Hunger Winter primary paper — Heijmans et al. (2008) PNAS — confirm citation investigate

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