The inheritance of trauma

In the realm of psychology and personal growth, there is often talk of "inheriting" the fears, failures, or blockages of our ancestors. For a long time, the idea that a trauma experienced by our grandfather could affect our ability to attract abundance or our current anxiety seemed like a therapeutic metaphor or a simple spiritual belief.

However, modern science has spoken, and it has done so with irrefutable data through the field of behavioral epigenetics.

The researcher who forever changed our understanding of transgenerational trauma is Dr. Rachel Yehuda, a renowned expert in neuroscience and epigenetics of trauma, and Director of the Division of Traumatic Stress Studies at the Icahn School of Medicine at Mount Sinai, in New York.

Her exhaustive scientific research has provided the missing biological link that supports what Family Constellations have been observing phenomenologically in clinical practice for decades.

The discovery: Holocaust survivors

Dr. Yehuda focused much of her initial work on a very specific population that had experienced extreme horrors: the Holocaust survivors and their descendants. Their clinical team discovered something astonishing: the children and grandchildren of these survivors (up to two generations later) exhibited measurable alterations in their basic biological functions.

Studies showed that these descendants exhibited:

• Lower-than-normal levels of cortisol (the stress hormone)
• Increased sensitivity to stress
• Superior activation of the sympathetic nervous system, responsible for alertness and survival

The striking part of the finding was that these individuals showed this physiology even though they had never directly experienced the original trauma.

How is it transmitted? The mechanism of DNA methylation

The research by Dr. Yehuda and her colleagues empirically demonstrated that exposure to extreme stress has the astonishing ability to alter an individual's gene expression.

This biological process is known as "DNA methylation". It consists of a cellular mechanism where a chemical tag (a methyl group) is added to certain key genes related to stress, which deactivates them or profoundly alters how the body will react to danger in the future.

In summary: terror, wars, severe famines, and unresolved grief change the biology of those who suffer them, and these epigenetic imprints or marks are transferred across generations.

We don't inherit the memory, we inherit the alarm

One of the most clarifying concepts postulated by Dr. Yehuda's studies is that human beings we don't inherit the "memory" of our ancestors; that is, we are not born with a cognitive image of their suffering. What we inherit is the biological stress adaptation response they developed to survive at that time.

That physiological configuration was highly adaptive and useful for the ancestor to survive in a war context. However, when it is transmitted to a descendant living in a peaceful environment today, that same biological response becomes a heavy burden. It manifests as:

• Unexplained anxiety
• Depression
• Visceral fear of economic scarcity
• Feeling "blocked"

From the paradigm of Family Constellations, this mimicry of suffering is known as an "invisible loyalty".

The Good News: Epigenetics Is Reversible

Perhaps the greatest and most hopeful contribution of Dr. Yehuda's research is not only confirming that trauma is biologically inherited, but also demonstrating that we can heal it. The expert emphasizes that the existence of a biological accommodation to trauma means that we are not immutable victims or prisoners of our genes.

Epigenetic marks are not permanent sentences in our DNA. Developing new experiences that provide emotional safety and nervous system regulation tools can actively modify gene expression.

This is where profound methods of awareness, such as Family Constellations or Biodecoding, shine brightly: by ordering our family systeminternally, assimilate our history, and respectfully return the pain to our ancestors, we are literally helping to change our biology, breaking the chain so as not to pass on this suffering to future generations.