Oct. 2 (UPI) — Most major health organizations, including WHO and the CDC, insist that mask-wearing helps slow the spread of COVID-19, but some critics contend masks can cause carbon dioxide poisoning by trapping CO2.
However, new research, published Friday in the journal Annals of the American Thoracic Society, shows wearing a mask is very unlikely to cause carbon dioxide poisoning.
For the study, researchers measured changes in gas exchange — the levels of oxygen and carbon dioxide — in both healthy individuals and veterans with chronic obstructive pulmonary disease, COPD, before and after donning face masks.
Because people with COPD must work harder to breathe, they can sometimes experience shortness of breath and exhaustion.
The latest tests showed mask-wearing had little to no effect on gas exchange in both healthy individuals and those with COPD.
“We show that the effects are minimal at most even in people with very