Non-carcinogenic risk for children population health in Kazan caused by food products and food raw materials contamination

The paper dwells on results of assessing non-carcinogenic risk for children health in Kazan caused by consumption of food products contaminated with chemicals. Research was performed in two stages (2007-2010 and 2011-2014) on children aged 3-6. Actual nutrition of children was examined via questioning and timing-weighing techniques. Daily doses were calculated allowing for regional exposure parameters at median (Me) and 95-th percentile level. We detected high non-carcinogenic risk at 95-th percentile level for methyl-mercury (3.89 and 3.33 in both periods correspondingly); high and intolerable for As (10.67 in the first period). We determined organs and systems in a body which were under greatest toxic effects. Alerting level of non-carcinogenic risk for central nervous system (HI = 3.03) was detected in the first period at median level. In 2007-2010 we detected the following high non-carcinogenic risks at the 95-th percentile level of a danger coefficient for children: non-carcinogenic risk for central nervous system (HI = 12.20), hormonal system (HI=12.87), immune system (HI=11.72), and alerting risk for development (HI=4.03). In 2011-2014 the following systems were most prone to overall toxic impacts: central nervous system and development (HI = 4.02 and 3.98 correspondingly). Non-carcinogenic effects risk over 2007-2011 for hormonal system (64 %), central nervous system (79 %), and immune system (91 %) was caused mostly by food products contamination with As. As for 2011-2014, the greatest risk factor was Pb introduction, (46 %) for hormonal system, and (57 %) for central nervous system