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Method, apparatus and breathable compositions for protecting a person from reactive oxygen species in the body are described. The invention involves providing a person with a breathing gas composition comprising at least one fuel gas compound. Apparatus and methods for providing such breathing gas c

Method, apparatus and breathable compositions for protecting a person from reactive oxygen species in the body are described. The invention involves providing a person with a breathing gas composition comprising at least one fuel gas compound. Apparatus and methods for providing such breathing gas compositions are described.

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What is claimed is: 1. A method of providing protection from reactive oxygen species, the method comprising the steps of: preparing a breathable composition comprising oxygen intentionally supplemented with a fuel gas comprising at least one hydrocarbon fuel gas; providing said breathable composit

What is claimed is: 1. A method of providing protection from reactive oxygen species, the method comprising the steps of: preparing a breathable composition comprising oxygen intentionally supplemented with a fuel gas comprising at least one hydrocarbon fuel gas; providing said breathable composition to an animal on land while the animal is surrounded by a gaseous environment; and within said animal, scavenging said reactive oxygen species with said fuel gas. 2. The method of claim 1, said animal being a human. 3. The method of claim 1, further comprising providing the animal with the breathable composition continually for a period of time greater than one hour. 4. The method of claim 3, further comprising providing the animal with the breathable composition continually for a period of time greater than one day. 5. The method of claim 4, further comprising providing the animal with the breathable composition continually for a period of time greater than one month. 6. The method of claim 3, further comprising providing the animal with the breathable composition continually for a period of time greater than 4 hours. 7. The method of claim 3, further comprising providing the animal with the breathable composition for a cumulative time of greater than 15 hours in one day. 8. The method of claim 3, further comprising providing the animal with the breathable composition for an average of greater than 12 hours a day over 30 consecutive days. 9. The method of claim 1, said fuel gas being selected from the group consisting of, methane, ethane, propane, acetylene, ethene, n-butane, isobutane, 1-butene, and a combination thereof. 10. The method of claim 1, said breathable composition being an explosive composition. 11. The method of claim 10, further comprising explosion-proofing the environment where the breathable composition is being provided to prevent ignition of the breathable composition or exhaled gas. 12. The method of claim 1, the breathable composition being provided at or near atmospheric pressure. 13. The method of claim 12, the providing of the breathable composition being performed using an open circuit apparatus. 14. The method of claim 1, the providing of the breathable composition being performed using a closed circuit apparatus. 15. The method of claim 1, the providing of the breathable composition being performed using a semi-closed circuit apparatus. 16. The method of claim 1, the step of providing further comprising the steps of: positioning the animal in a building with a ventilation system; and supplying said fuel gas into the ventilation system to provide the breathable composition inside the building. 17. The method of claim 1, wherein the step of providing said-breathable composition simultaneously with the step of preparing said breathable composition by supplying said fuel gas is supplied to a respiratory tract of the animal and said oxygen is supplied from ambient air so that, upon inhalation of the fuel gas and the ambient air, said breathable composition is prepared and provided to the animal. 18. The method of claim 17, further comprised of maintaining a selected concentration of the fuel gas in the breathable composition by regulating a rate of supply of said fuel gas to the respiratory tract. 19. The method of claim 1, further comprised of supplying the breathable composition to the animal via an oral-nasal mask or a helmet. 20. The method of claim 1, further comprising the step of providing the breathable composition under a hyperbaric condition. 21. The method of claim 1, with said fuel gas being acetylene. 22. The method of claim 1, preparing said breathable composition by delivering ambient air together with said fuel gas. 23. The method of claim 1, further comprising the step of providing the breathable composition under a hypobaric condition. 24. The method of claim 1, further comprising the steps of: filling a first chamber having an open bottom with the breathable composition, said first chamber being positioned in a second chamber, said breathable composition being lighter than an ambient air so that said breathable composition is held in said first chamber; and positioning the animal in the first chamber with the open bottom so that the animal breathes the breathable composition. 25. The method of claim 24, further comprising: explosion-proofing the environment in the first and second chambers. 26. The method of claim 25, further comprised of said breathable composition being an explosive composition. 27. The method of claim 26, with said breathable composition consisting essentially of hydrogen, acetylene and oxygen. 28. The method of claim 26, with said breathable composition consisting essentially of hydrogen and oxygen. 29. The method of claim 26, with said breathable composition having a density less than 75% that of air. 30. The method of claim 26, with said first chamber further comprising a flexible skirt suspended from a lip defined by the open bottom of the first chamber. 31. The method of claim 26, wherein said first chamber is further comprised of an overflow pipe extending from an entry opening above the open bottom of the first chamber through the top of the first chamber, and said second chamber is further comprised of a check valve at the top of the overflow pipe, said check valve is located in a region providing ventilation. 32. The method of claim 31, further comprising: positioning an inlet muffler inside the first chamber below the approximate height of a mouth of the animal in the first chamber; purifying the breathable composition drawn by the inlet muffler by locating a life support system outside the first chamber and connecting the life support system to said inlet muffler; and purifying breathable composition to supplied to the first chamber by installing a muffler diffuser pipe inside the first chamber and connecting the pipe to the life support system. 33. The method of claim 32, said life support system further comprising: a CO2 scrubber; a temperature and humidity control; an oxygen supply supplementing oxygen; a secondary loop scrubbing nitrogen, argon, oils and other contaminants; and an alarm system alerting when there is a failure in the system. 34. The method of claim 26, further comprising: an antistatic mat on a floor under the first chamber. 35. The method of claim 24, further comprising: scrubbing an exhaled gas of the first chamber to remove carbon dioxide. 36. The method of claim 24, said breathable composition comprising at least 66% hydrogen by volume. 37. The method of claim 24, said breathable composition comprising hydrogen and acetylene. 38. The method of claim 24, the breathable composition in the first chamber having a density less than about 75% of the ambient air. 39. A method of providing protection from reactive oxygen species, the method comprising the steps of: preparing a breathable composition comprising oxygen intentionally supplemented with acetylene; providing an animal on land while surrounded by a gaseous environment with said breathable composition; and within said animal, scavenging said reactive oxygen species with said acetylene. 40. The method of claim 39 with said oxygen being supplied from an ambient air. 41. The method of claim 39, with said breathable composition further intentionally supplemented with a fuel gas. 42. The method of claim 41, said fuel gas being selected from the group consisting of hydrogen, methane, ethane, and propane. 43. A method of providing protection from reactive oxygen species, the method comprising the steps of: preparing a breathable composition consisting essentially of ambient air intentionally supplemented with hydrocarbon fuel gas; providing said breathable composition to an animal on land; and within said animal, scavenging said reactive oxygen species with said hydrocarbon fuel gas.