Dr. Margarite Griesz-Brisson MD, PhD is a Consultant Neurologist and Neurophysiologist with a PhD in Pharmacology, with special interest in neurotoxicology, environmental medicine, neuroregeneration and neuroplasticity. This is what she has to say about masks and their effects on our brains:
"The re-breathing of our exhaled air will without a doubt create oxygen deficiency and a flooding of carbon dioxide. We know the human brain is very sensitive to oxygen deprivation. There are nerve cells ...