A recent Health Canada report has claimed that more than 90 percent of Canadians have measurable levels of bisphenol A (BPA) in their urine and 88 percent have measurable levels of mercury in their blood. The report contains results of a national biomonitoring survey, which is the first phase of a more detailed survey by the Canadian Health Ministry, and includes analysis of blood and urine samples collected from 5,600 Canadians between March 2007 and February 2009. The survey found BPA concentrations higher in children ages 6 to 11 than for adults ages 40 to79, with the highest concentrations measured in teens ages 12 to 19. Canadians ages 6 to 79 had a geometric mean concentration of urinary BPA of 1.16 micrograms per liter.
The geometric mean concentration for mercury in blood samples across all age groups was 0.69 micrograms per liter, with lower levels reported for children than adults. The survey also measured national blood lead levels. It found that less than 1 percent of those tested had concentrations at or above the intervention level of 10 micrograms per deciliter. The highest concentrations were reported in those ages 60 to 79 and the lowest in children ages 6 to 19. The report said lead concentrations had fallen dramatically over the past 30 years.