NAD... But here's my anecdote.... I used to suffer from chronic sinus infections. Basically every time I got sick it turned into one. The last one I had lasted six months. ENT recommended surgery to do whatever. Got a 2nd opinion a couple months later as I really didnt want the surgery.

He gave me another round of antibiotics (3rd one, which I didnt take), and told me to drink water. Weight divided two = ounces of water per day, minimum. More seeing as I was sick. He explained the science of hydration and how it effects my sinuses.

Ten days later my sinus infection was gone. I've taken his advice about water intake and never got another sinus infection. It has to be water. Juice or tea does not count.