Determination of the total level of nitrosamines in select consumer products in the major metropolitan regions of Nigeria

Over 200 local consumer products obtained from different points of the three major regions of Nigeria (i.e. the northern, eastern and western regions), were screened for contamination by N-nitroso compounds. Dairy products present the lowest level of nitrosamine contamination while locally made spiced pre-grilled meat and fish products present the highest level of nitrosamine contamination. Also local beverages made from guinea corn show high levels of nitrosamine contamination. Products of the western region of the country seem to be more contaminated that products of other regions. The possible sources of the contaminants and their implication as health hazards are discussed.