How well we fight off a cold can be related to stress, sleep, diet, alcohol intake, smoking and even sex - Getty We are deep into colds season with all the familiar symptoms – sore throats, runny ...

First, you’re not alone. Up to 80% of American adults have the herpes simplex virus (HSV-1), which can cause cold sores (also known as fever blisters), according to Johns Hopkins. The viral infection ...

Unfortunately, we can’t control other people’s gross behavior — so if the worst does happen and you’ve gotten a face full of ...