Thread:Mario fangamer/@comment-4955311-20141223203800/@comment-25653892-20141225215525

No, but there's something called the "nocebo effect". I'll save you the troubles of looking it up, here's the New Oxford American Dictionary's entry:

nocebo |nəˈsēbō |   noun a detrimental effect on health produced by psychological or psychosomatic factors such as negative expectations of treatment or prognosis .