None of the evidence in that book supports this claim. (It's a mixture of unrelated anthropological observations, and appeal to nature.) I agree that mouth bre

None of the evidence in that book supports this claim. (It's a mixture of unrelated anthropological observations, and appeal to nature.) I agree that mouth breathing is probably bad. I don't agree that it causes spinal deformation or smallpox. I really don't think taping the mouth shut is a safe treatment for sleep apnea.