The sneezing. The coughing. The lethargy. It's enough to make a cold sufferer's appetite disappear completely. Studies show that certain foods can help alleviate the symptoms of a common cold-and sometimes shorten its duration. One expert, Sharon Horesh Bergquist, assistant professor at Emory School of Medicine and a primary-care physician with a specialty in internal medicine at Emory Healthcare, offers her take on what to eat and what to avoid.-Heidi Mitchell.打喷嚏，咳嗽，无精打采，这些足以让一位感冒患者胃口全无。研究显示，某些食品可以帮助缓解普通感冒症状，有时还可以缩短病程。埃默里大学医学院(Emory School of Medicine)助理教授、埃默里医疗集团(Emory Healthcare)内科初级治疗医师伯奎斯特(Sharon Horesh Bergquist)是这方面的专家。她提供了有关感冒饮食和禁忌的建议。