Symptoms such as fatigue, loss of appetite, altered sleep, and social withdrawal are often treated as inconvenient side effects of infection. While some scientists have suggested that they may serve a protective function, it is widely assumed that they’re byproducts of being sick. Now, in a new perspective published in Trends in Immunology on April 30, Whitehead […] The post Q&A: Why feeling sick may be important for surviving infection appeared first on MIT Department of Biology .