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TOEFL Quiz : Tracking Ancient Diseases Using Plaque

Have you ever wondered what is inside your dental plaque? 
Probably not, but people like me do. I'm an archeological geneticist at the Center for Evolutionary Medicine at the University of Zurich, and I study the origins and evolution of human health and disease by conducting genetic research on the skeletal and mummified remains of ancient humans. And through this work, I hope to better understand the evolutionary vulnerabilities of our bodies, so that we can improve and better manage our health in the future.
There are different ways to approach evolutionary medicine, and one way is to extract human DNA from ancient bones. And from these extracts, we can reconstruct the human genome at different points in time and look for changes that might be related to adaptations, risk factors and inherited diseases. But this is only one half of the story.
The most important health challenges today are not caused by simple mutations in our genome, but rather result from a complex and dynamic interplay between genetic variation, diet, microbes and parasites and our immune response.

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