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Pesticides Shorten Fish Lifespan, Study Reveals Shocking Effects

1/16/2026

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Summary

Story summary

Jason Rohr, a biologist at the University of Notre Dame, led a study showing that low levels of common agricultural pesticides reduce fish lifespan.
The research, published in Science, found that chronic exposure to pesticides such as chlorpyrifos accelerates biological aging, evidenced by shortened telomeres.
The effects were observed in more than 20,000 lake skygazer fish from China, which leads researchers to say safety assessments must consider long-term exposure.

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Story summary

Jason Rohr, a biologist at the University of Notre Dame, led a study showing that low levels of common agricultural pesticides reduce fish lifespan.
The research, published in Science, found that chronic exposure to pesticides such as chlorpyrifos accelerates biological aging, evidenced by shortened telomeres.
The effects were observed in more than 20,000 lake skygazer fish from China, which leads researchers to say safety assessments must consider long-term exposure.