Your grandmother did not know she was passing it forward. She was surviving. The conditions of her life, which were specific and were not the conditions of your life, required of her nervous system a particular calibration: a level of vigilance, a quality of smallness, a way of moving through the world that occupied minimum space and made minimum demand and produced minimum friction, because friction in the conditions of her life had costs that she could not afford. The calibration was not a choice. It was the body’s response to the body’s environment. The body learns from its environment what the environment requires. It encodes what it learns. And it passes what it has encoded forward, through the mechanisms of epigenetics, to the bodies that come after it. Your grandmother passed it to your mother. Your mother passed it to you. You are now in the position of deciding what to do with it.
The scientific confirmation of this transmission came through Rachel Yehuda’s work and the subsequent research it generated, but the transmission itself predates the science. Traditional knowledge systems across cultures have long understood that what one generation experiences is felt by subsequent generations, that the wounds of the ancestors show up in the bodies of the descendants, that healing is not only individual work but is in some sense the work of lineage. The scientific mechanism that Yehuda and Meaney and subsequent researchers have identified — the epigenetic modification of gene expression through methylation and other marks that are transmitted across generations — is the biological confirmation of what the traditional understanding was pointing toward. The body knows what happened before it was born. It has been calibrated to conditions it never experienced. It is carrying the weight of survivals it did not survive.
The specific transmissions relevant to the not-choosing loop vary by family system and by the historical conditions that shaped the family system. The grandmother who survived the partition of a country and the violence that accompanied it, and who passed forward through the body a hypervigilance that was the survival strategy for those conditions, a hypervigilance that arrived in her grandchildren as a baseline anxiety that the grandchildren experience as personality rather than history. The great-grandmother who worked as domestic labor in conditions that required the constant suppression of her own needs in service of the needs of others, and who passed forward through the body a way of organizing the self around other people’s requirements that arrived in her descendants as the loop. The ancestor who was enslaved, whose body passed forward the nervous system calibration that the conditions of slavery required, a calibration that continues to shape the bodies of descendants who have never experienced those conditions.
This is not a deterministic account. The epigenetic marks are responsive to experience. The nervous system is plastic. The transmission does not create a fixed destiny. But it does create the starting conditions, the baseline from which the individual’s own developmental experience then works. The person who arrives with a nervous system pre-calibrated to high vigilance by the epigenetic inheritance of previous generations’ survival requirements, and who then also grows up in a first room that confirms and deepens the vigilance, is carrying a double load. The person who arrives with the same pre-calibration and grows up in a first room that offers different conditions, that provides the evidence of safety that revises the prediction rather than confirms it, may not develop the full loop. The inheritance creates predisposition, not inevitability.
The recognition of what was passed forward from previous generations often produces, in people who have done enough of their own work to encounter it clearly, an emotional experience distinct from the grief of the personal developmental history. It is something closer to compassion, the recognition that the people who made you were also carrying what they had been given, that the loop they passed forward was itself inherited rather than chosen, that the lineage of the not-choosing goes back far enough that it precedes any individual’s capacity to interrupt it. The compassion is not an excuse. The understanding that the loop was transmitted does not eliminate the responsibility to interrupt the transmission in one’s own generation. It contextualizes the responsibility: the work is not the work of fixing what is broken but the work of revising what was calibrated to conditions that no longer exist.
The healing of intergenerational transmission has a dimension that individual healing work alone cannot fully address. The person who interrupts the loop in their own generation does something that exceeds the personal. They become, for the people who come after them, a different kind of first room. The child of the person who has begun to choose themselves grows up in an environment with a different quality of availability, a different modeling of what it looks like to occupy one’s own life. The epigenetic research suggests that this difference, sustained over a childhood, produces a different calibration in the next generation’s nervous system. The loop does not fully transmit forward. The interruption is real and it is, in its quiet way, the largest thing available to any individual human life.