A review of peer-reviewed studies suggests regular COVID 19 mask wearing increases risk of mental retardation. Studies affirm what independent medical doctors are increasingly saying – mask wearing mandates are not only unscientific, but contrary to good health and can be deadly! Below, we show how the scientific literature finds that prolonged mask wearing impedes brain function. Top medical doctor, Britain’s Dr Vernon Coleman, is Britain’s best-selling medical author for several decades and has repeatedly warned how dangerous mask wearing really is – it can even be deadly to some. He tells us: “Masks cause hypoxia and hypercapnia – and...