Epigenetics is the branch of molecular biology that studies heritable changes in gene expression that do not modify the underlying DNA sequence. In other words: how life experiences (stress, diet, trauma, environment) can activate or silence genes without changing the genetic code, and how these changes can be transmitted to subsequent generations.
There are three main epigenetic mechanisms: DNA methylation (adding methyl groups to cytosine, which tends to silence gene expression), histone modification (altering the proteins that package DNA, changing accessibility), and non-coding RNA (especially microRNA, which regulates post-transcriptionally). All three operate as switches that turn genes on or off according to experience.
For the field of transgenerational trauma, epigenetics is decisive: it provides a verifiable biological mechanism by which traumatic experiences of parents or grandparents can leave marks that alter stress regulation in their descendants. What for decades was clinical intuition — “trauma is inherited” — now has documented molecular substratum.
For the Constelando website, epigenetics is the most solid bridge between the systemic method and contemporary science. It does not “prove” Hellinger but offers plausible evidence that the dynamics observed clinically by the method have real biological correlates.
Bibliography
- Holocaust Exposure Induced Intergenerational Effects on FKBP5 Methylation — Rachel Yehuda et al.. Biological Psychiatry, 80(5), 372-380, 2016.
- Implication of sperm RNAs in transgenerational inheritance of the effects of early trauma in mice — Katharina Gapp, Isabelle Mansuy et al.. Nature Neuroscience, 17(5), 667-669, 2014.
- Epigenetic regulation of the glucocorticoid receptor in response to maternal behavior — Ian Weaver, Michael Meaney et al.. Nature Neuroscience, 7(8), 847-854, 2004.
- It Didn't Start with You — Mark Wolynn. Gaia, 2017.
These books are in the reference library that nourishes Constelando el Origen.
Site articles that address this topic
Related terms
DNA Methylation
Key epigenetic mechanism: addition of methyl groups (CH3) to DNA cytosines. Tends to silence gene expression. Documented mediators of transgenerational transmission.
See recordFKBP5 (stress gene)
Gene that regulates the sensitivity of the glucocorticoid receptor to cortisol. Its epigenetic modifications are one of the central findings in the transgenerational transmission of trauma.
See recordYehuda's studies on Holocaust survivors
Rachel Yehuda's research program at Mount Sinai that documented epigenetic, hormonal, and HPA axis alterations in Holocaust survivors and their descendants.
See recordMansuy Model (transgenerational transmission in mice)
Studies by Isabelle Mansuy at ETH Zurich that documented, in mice, transmission up to the 4th generation of behavioral effects due to early trauma via sperm RNA.
See recordTransgenerational trauma
Pain or trauma not processed by one generation that is transmitted—psychically, somatically, and, according to recent evidence, epigenetically—to subsequent generations.
See recordA session that names what hurts
If you recognize this dynamic in your own history, a Family Constellation can reveal where it comes from and what movement brings order to it. Daniela respectfully accompanies each case.
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