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How to get better sleep amid the pandemic - and why you should


How to get better sleep amid the pandemic - and why you should
Laura Williamson, American Heart Association News
March 17, 2021
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A good night s sleep. It s one of those things people don t appreciate until it s gone. But like much taken for granted prior to the COVID-19 pandemic, good quality sleep is harder to come by these days.
That s worrisome, health experts say, because poor sleep can lead to poor brain and heart health.
We re seeing a lot of irregular sleep patterns now, said Dr. David Gozal, a professor and chair of the child health department at the University of Missouri in Columbia. He is among the researchers who are finding more troubled sleepers across the globe since the pandemic began. ....

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Study: One enzyme dictates cells' response to a probable carcinogen


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CAMBRIDGE, MA In the past few years, several medications have been found to be contaminated with NDMA, a probable carcinogen. This chemical, which has also been found at Superfund sites and in some cases has spread to drinking water supplies, causes DNA damage that can lead to cancer.
MIT researchers have now discovered a mechanism that helps explain whether this damage will lead to cancer in mice: The key is the way cellular DNA repair systems respond. The team found that too little activity of one enzyme necessary for DNA repair leads to much higher cancer rates, while too much activity can produce tissue damage, especially in the liver, which can be fatal. ....

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