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How stress echoes down the generations
2018-05-27T13:53:01.2552467Z - / Hacker News
But now Larry Feig of Tufts University and his colleagues have shown that psychological stress seems to cause similar changes in the sperm of both mice and men. Biologists know that traits are carried down the generations by genes. A standard way to stress mice is to move them to new cages, with new mice, from time to time until they reach adulthood. The effects of cage-shuffling, in other words, seem to last for at least three generations. But epigenetic effects might be treatable, by boosting levels of particular micro-RNAs in sperm, for example.

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