the tobacco weight equivalent of up to 60 cigarettes of 1 g each) and consumed in 1 to 8 sessions.
those who smoked only hookah (no cigarettes, bidis, etc.), prepared between 1 and 4 times a day with a quantity of up to 120 g of a tobacco-molasses mixture each (i.e. To find serum CEA levels in ever/exclusive hookah smokers, i.e. However some of them were also users of other tobacco products (cigarettes, bidis, etc.).
Hookah smokers had higher levels of CEA than non-smokers although mean levels were low compared to cigarette smokers. We have recently published some work on CEA levels in hookah (also called narghile, shisha elsewhere) and cigarette smokers.