Leading cause of lung cancer amongst non-smokers. Responsible for 21,000 deaths in the US.
Excess humidity can lead to mould, low humidity can help spread infection.
High levels cause headaches, drowsiness as well as low productivity and disease transmission.
Temperatures can affect productivity, mood, sleep patterns and comfort level.
Increased levels are responsible for eye and skin irritations, headaches as well as kidney and liver damage.
Changes in pressure can lead to an increase in headaches.