Essentials: Genes & the Inheritance of Memories Across Generations | Dr. Oded Rechavi
Andrew Huberman and Dr. Oded Rechavi discuss evidence that acquired traits like viral immunity can be passed to offspring through RNA, not just DNA, using worm research to challenge long-held genetic assumptions.
The gist
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Small RNA molecules can cross the barrier between body cells and reproductive cells, passing acquired traits to offspring without any change to DNA sequence.
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Worms infected with viruses pass immunity to offspring through small RNAs, and that protection can last multiple generations even without the genes to produce it.
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Brain activity in worms can send RNA signals to reproductive cells, altering how offspring behave up to three generations later.
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Rechavi says lifestyle choices like parental exercise may one day be used to shape heritable health profiles before conception, as an alternative to DNA-based screening.
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