This old wives' tale turns out to be true, say scientists from the University of Nebraska. Why? While all warm liquids can help relieve cold symptoms by loosening sticky mucus deposits, chicken soup is also filled with specific anti-inflammatory compounds that have been shown to fight viral infections like the common cold. More good news: You don’t have to make a homemade mix to reap its sickness-busting benefits. This study found equally effective anti-viral actions of chicken soup, whether it was a homemade recipe or commercial brands. As for dosage: Experts say a bowl or two a day did the trick. So slurp away.