Can you inherit memories from your ancestors?
Claims that people can inherit ancestors’ memories or trauma via epigenetics are drawing heavy scrutiny from technologists and life scientists. Commenters distinguish between well-established mechanisms like DNA methylation that can influence gene expression across generations, and the far stronger, largely unsupported notion that specific experiences or psychological traumas are biologically “remembered” and passed down. Many see popular treatments of the subject, such as a recent Guardian piece, as overhyping limited animal studies and blurring the line between rigorous epigenetic research and speculative ideas about inherited trauma.
Skepticism about “inherited memories” framing
- Many commenters say the article’s claim that “lived experience and acquired knowledge” are inherited is misleading or “nonsense.”
- Key objection: epigenetic changes can bias gene expression and behavior, but that is not the same as inheriting explicit memories or experiences.
- Several argue the piece blurs “epigenetic memory” (a technical term for stable molecular marks) with everyday psychological memory, inviting misinterpretation and clickbait.
- Some see parallels to the discredited recovered‑memory movement and to popular books about “the body keeping the score.”
What epigenetics is (and isn’t)
- Posters with biology backgrounds describe epigenetics as biochemical marks (e.g., DNA methylation, histone modifications) that regulate gene expression and can persist across cell divisions, sometimes across generations.
- They stress that these marks tune existing genes up or down rather than encoding new, decodable “information” about events.
- There is debate over how long such marks persist across generations and how strong the effects are; much is described as still unknown.
Mouse olfactory shock study
- The main cited study conditions mice to fear a smell paired with shock; descendants show heightened sensitivity/fear to that smell.
- The study reports hypomethylation of a specific olfactory receptor gene in sperm and offspring.
- Skeptics note:
- It’s a decade old, not heavily replicated, and methods are thin on some details.
- It shows a heritable sensory/behavioral bias, not rich “memories.”
- Supporters counter that it is valid evidence of intergenerational epigenetic influence, even if the article overstates implications.
Instinct vs memory
- Several distinguish instinctive behaviors (fixed action patterns, innate wiring, predispositions) from memory formed by individual experience.
- Examples discussed: spiders weaving species‑specific webs, innate fears (snakes/spiders), grasp reflex in infants.
- Consensus in the thread: instincts and predispositions are plausibly shaped by genetics/epigenetics; calling them “memories” is misleading.
Intergenerational trauma and politics
- Some link the article’s framing to popular notions of “inherited trauma” and political narratives (both left and right) about ancestral suffering or immutable cultural traits.
- Others insist most inequality is explained by inherited wealth, social structures, and upbringing, not biological “trauma memory.”
- A few cite studies on famine or Holocaust descendants as suggestive of epigenetic effects, while critics emphasize small, homogeneous cohorts, retrospective designs, and over‑interpretation.
Overall tone
- Strong skepticism toward the article’s rhetorical leap from epigenetic modulation to inheritable “memories.”
- Moderate openness that epigenetic inheritance of some stress‑ or environment‑linked traits is real, but mechanisms, scope, and relevance in humans remain uncertain.