"Changes in the average concentrations of selected substances in the Canadian population, aged 6 to 79, Cycle 1 (2007 to 2009) to Cycle 6 (2018 to 2019)",,,, ,,,, Survey period,Mercury in blood (percentage change from Cycle 1),Lead in blood (percentage change from Cycle 1),Cadmium in blood (percentage change from Cycle 1),Bisphenol A in urine (percentage change from Cycle 1) Cycle 1 (2007 to 2009),n/a,n/a,n/a,n/a Cycle 2 (2009 to 2011),5,-8,-12,0 Cycle 3 (2012 to 2013),5,-15,0,-8 Cycle 4 (2014 to 2015),-20,-26,-9,-17 Cycle 5 (2016 to 2017),-14,-31,-24,-33 Cycle 6 (2018 to 2019),-3,-37,-26,-43 ,,,, ,,,, "Average concentrations of selected substances in Canadians, aged 6 to 79, Cycle 1 (2007 to 2009) to Cycle 6 (2018 to 2019)",,,, ,,,, Survey period,Mercury in blood (micrograms per litre),Lead in blood (micrograms per litre),Cadmium in blood (micrograms per litre),Bisphenol A in urine (micrograms per litre) Cycle 1 (2007 to 2009),0.88,13.00,0.34,1.20 Cycle 2 (2009 to 2011),0.92,12.00,0.30,1.20 Cycle 3 (2012 to 2013),0.92,11.00,0.34,1.10 Cycle 4 (2014 to 2015),0.70,9.60,0.31,1.00 Cycle 5 (2016 to 2017),0.76,9.00,0.26,0.81 Cycle 6 (2018 to 2019),0.85,8.20,0.25,0.68 ,,,, ,,,, "Note: n/a = not available. The first table presents the percentage change in the average (geometric mean) concentrations of selected substances in the Canadian population relative to Cycle 1 (2007 to 2009). The concentrations are presented in the second table. The second table presents changes in the average (geometric mean) concentrations of selected substances in the Canadian population. The concentrations of lead and cadmium in blood and bisphenol A in urine are from participants aged 6 to 79 years, and mercury in blood are from participants aged 20-79 years. These averages do not include children under the age of 6 years, as they were not included in the Cycle 1 survey. For mercury, averages do not include data from the age group 6-19, due to poor detection of mercury in children affecting the ability to calculate geometric means for the total population (i.e. more than 40% of samples were below the limit of detection when including children aged 6-19 years).",,,, Source: Health Canada (2021) Mercury in Canadians (https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/environmental-contaminants/human-biomonitoring-resources/mercury-canadians.html). Health Canada (2021) Lead in Canadians (https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/environmental-contaminants/human-biomonitoring-resources/lead-canadians.html). Health Canada (2021) Cadmium in Canadians (https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/environmental-contaminants/human-biomonitoring-resources/cadmium-canadians.html). Health Canada (2021) Bisphenol A (BPA) in Canadians (https://www.canada.ca/en/health-canada/services/environmental-workplace-health/reports-publications/environmental-contaminants/human-biomonitoring-resources/bisphenol-a-canadians.html). ,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,