Old people say they are having "a senior moment" when they cannot remember something. As one of the older people, I seem to be hearing that statement from younger and younger people. It seems likely that part of the cause of such "memory loss" is a burden of mercury in their bodies (and mine) gathered over time by low dose exposures. One in 12 women in the USA have body mercury levels considered unsafe by the EPA (Frontiers in Ecology and Environment 7(3)p.121; 2009). I bet the loads are not sex specific. It's a major public health threat and the symptoms are growing..."Nation, Nation...we have a problem."
One third of the source: coal-fired power plants (and they're not going away before 2030). There are other sources, some lessening since childhood (playing with the mercury of thermometers), others increasing (fish).
In February,2009, countries got together and said "enough is enough" and concluded that voluntary efforts to control mercury pollution just won't work. There's a new treaty and promises to reduce mercury emissions and international trade in mercury, improve storage, and cleanup contaminated sites.
Those signing the treaty, ignoring the human crisis in the gold-mining areas where mercury is intensively used, said "let's start by 2013," having their own senior moment about their conclusion that babies are now at risk and mercury pollution is a major public health threat.