A new report published by an American Medical Association journal revealed forcing children to wear face masks leads to adverse health effects. JAMA Pediatrics, a top-rated monthly journal published by the AMA, found wearing face masks increases the amount of carbon dioxide in inhaled air to unhealthy levels.

The study measured carbon dioxide levels in 45 children ages 6-17 while wearing masks. The normal content of carbon dioxide in the air is 400 parts per million (ppm), with anything above 2000 ppm considered unacceptable by the German Federal Environmental Office.

The JAMA report measured averages of 13,120 to 13,910 ppm of carbon dioxide in the inhaled air of children wearing masks, which is over six times higher than the unsafe threshold. The study further pointed out this measurement was after only three minutes of wearing a mask. Children forced to wear masks at school find themselves wearing masks for hours, five days a week.