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Practice Listening: Highlight Incorrect Words
ID: #34507
Medium
Sweet Diet
* Click on the words that are different from what you hear
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Correct Transcript:
For worms fed a sugary diet, life is sweet. But short. According to a new study published in the journal Cell Metabolism, consistently adding a small amount of sugar to a worm's regular diet of bacteria shortened its lifespan by 20 percent. The research was performed on C. Elegans, tiny roundworms that typically live an average of two weeks. In previous work, Cynthia Kenyon of the university of California, San Francisco, found that an imitation to a gene called daf-2 changed insulin signaling and doubled the lifespan of the worms. And the worms didn't get old at their usual pace and then hang on longer—they actually aged more slowly. Now Kenyon's new study shows that worms with the daf-2 mutation don't get the life-extending benefits if they are routinely fed glucose.
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