https://www.tabletmag.com/sections/news/articles/breathing-trouble
There’s an old story about a guy who jumped into a thorn bush: He wanted to collect berries, but he failed to consider the adverse effects of the plan. Something similar happened with face masks during the COVID-19 pandemic: Masks were promoted, and often mandated, as necessary safeguards for reducing the chance of infection, while their possible adverse effects were brushed aside. While the science on the benefits of masking is still inconclusive, the latest research now shows that the prolonged use of face masks—especially those with tighter fits like the N95s—could harm wearers by exposing them to dangerously high levels of carbon dioxide.
The risks appear to be especially pronounced for young people. As part of a team of scientists, one of the authors of this article conducted a randomized study of the effects of masking on healthy school aged children in Germany. The results of this research, published in September 2022 in the peer reviewed journal Environmental Research, concluded that wearing masks raised the carbon dioxide (CO₂) “content in inhaled air quickly to a very high level in healthy children in a seated resting position that might be hazardous to children’s health.”
These results should not have come as a surprise. It has long been suspected that mask-wearing poses risks. In Germany, for instance, workers required to wear an N95/FFP2 respirator must get a certificate verifying their ability to do so, and even with said certificate, those workers are mandated to take a 30-minute break every 90 minutes.
Only in the 19th century, with the development of germ theory, did masks begin being used as health devices. Then in the early 20th century, masks gained a foothold in hospitals, usually worn by doctors and nurses. The “Spanish flu” pandemic of 1918-20 was perhaps the first case of masks being worn by the general public, but we only have scattered photographic pictures of masked people and don’t know how frequently they were worn.