How bad is it to smoke fantasia or starbuzz shisha once a month?

Well I used to smoke starbuzz, but then the hookah bar got a new menu which had mostly fantasia. It's pretty good, but I would like to know more about the effects of hookah on the body? Will it slow me down much? Will I have any problems in the long run? I might purchase one when I get older. But I dont think ima do it more than once a week. Can you please clear up stuff about a hookah and its effects? By the way, some people say hookah is just as bad as cigarettes even more. Is it true? how is it bad if its cooled and goes through water to make water vapor (hookah smoke)?