double[ing] the earth’s atmospheric pressure... [would make] oxygen and nitrogen toxic to many animals, including humans.
Doubling atmospheric pressure doubles the blood’s oxygen content. Doubling the blood’s oxygen content, by any means, can produce a disease called retrolental fibroplasia in unborn or premature children. An opaque membrane forms behind the lens of the eye, resulting in blindness. This also occurs in mice and other species.
Increased ambient pressure also results in excess carbon dioxide in the blood. Oxygen and nitrogen toxicities increase significantly. The problem is aggravated at high work levels and for the elderly and ill.
I am interested in the veracity of this claim. What (if any) effect would be the long-term effect of doubling the pressure of the atmosphere to the human body. Would this cause things like Nitrogen Narcosis, Retinopathy of Prematurity in babies who were carried to term under these conditions, Hypercapnia, Acidosis, Cushings, Hyperaldosteronism etc?
Would this be therapeutic like being in a hyperbaric chamber?