Your Grandparents' Fear Lives in Your DNA | 2014 Study

Added: 2026-05-23

[00:00:00]In 2014, scientists proved your grandparents fear can be encoded in your DNA.

[00:00:06]A scent [music] paired with stress in one mouse marked its grandchildren before they were born.

[00:00:11]Brian Dias and Kerry Ressler at Emory paired the smell of cherry blossom with a startle response. [music] Their 2014 paper in Nature Neuroscience showed pups inherited heightened sensitivity to the same scent.

[00:00:26]Epigenetic markers on the sperm carried the memory across generations. Trauma writes its own ink in the genome.

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[00:00:34]The long version on transgenerational memory is coming to this channel.