According to Statistics Canada, between 2005 and 2010 the rates of people diagnosed with Multiple Chemical Sensitivities, Fibromyalgia and Chronic Fatigue Syndrome in Canada increased significantly.
The number of people diagnosed with MCS increased by 31%
The number of people diagnosed with FM increased by 15%
The number of people diagnosed with CFS increased by 24%
As far as I know, they are no longer collecting information about these conditions, so updated prevalence statistics may not be forthcoming, despite these alarming increases and every indication that the amount of people being affected will continue to rise.
Seriously "Sensitive" to Pollution 