What is the source of most man-made formaldehyde?
That would have to be man himself! According to calculations from CanTox Inc. in 1988, the human body produces 51.4g of formaldehyde every day as part of the natural metabolic process. Assuming a world population of 6 billion, then we humans produce 300 million tons of formaldehyde (37% basis) every year – or around 10 times the installed plant capacity!!