The study suggests that a male's life experience can be passed down through more than his genetic code alone.
Researchers link this difference to an epigenetic change in the stressed dad's sperm - a change that they could prevent by blocking the father's stress hormones.
Researchers confined male mice in plastic tubes for two hours a day, for two weeks straight, to induce stress.
Afterwards, the animals' glucose levels were increased, but the mice gained weight more slowly and had increased levels of stress hormones called glucocorticoids in their blood.
This epigenetic change in stressed fathers showed up in their offspring's livers.
The findings were published in the journal Cell Metabolism.


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