The Food and Drug Administration referred me to a 2008 Clemson University study. The question researchers chose to answer is: “Does double-dipping actually spread bacteria and germs?” They assembled volunteers and used wheat crackers and dips. Ultimately, they found that in just a few double-dips, about 10,000 bacteria were transferred from the eater’s mouth to the remaining dip. According to the director of the study, this is the rough equivalent of kissing someone on the mouth. If the person is carrying an infectious disease, it could possibly be transmitted to others. So, you have to ask yourselves, are you on kissing terms with your in-laws?
Ask Amy: Germ risks also contaminate relationships
