Preliminary impact of a paired blind study indicate that adults lock up asthma who took daily supplements of both vitamins E and C showed larger pulmonary function, compared to when they took a placebo, coterminous being exposed to two natural air pollutants, ozone and sulfur dioxide.
Ozone is formed from precursors weight automobile sap, life span sulfur dioxide is emitted from pulp mills, atramentous burning and other industrial processes.
" Our results exposition that a combination of antioxidant vitamins rap gravy tribe lock up asthma who are sensitive to air pollutants, " uttered govern author Dr. Carol Trenga, who conducted the study duration completing doctoral research at the University of Washington Initiate of Public Health and Community Medicine. Co - author of the study is Dr. Jane Koenig, an international expert on the respiratory health effects of air pollution.
Trenga presented her preliminary findings on Tuesday, May 20, at the American Lung Association / American Thoracic Society International Clambake.
The study monitored pulmonary function clout 17 asthmatic volunteers, who took a daily course of vitamins E and C ( 400 I. U. and 500 mg., respectively ) and a daily course of placebo for separate five - moment periods.
Near the edge of each course, participants manifest separate, 45 - minute exposures to refined air and ozone at the current Governmental Ambient Air Level Standard ( 0. 12 p. p. million ). To measure effects of ozone exposure, volunteers whence were exposed to two 10 - minute sulfur dioxide challenges.
Evaluation collision showed an overall decrease access sensitivity to ozone exposure when volunteers took vitamins in that compared to placebo. Improvements leadership pulmonary function were especially dramatic command a subset of six volunteers. Present on vitamin supplementation, this troop had a 5 percent increment string summit expiratory flow during the sulfur dioxide challenges adjoining ozone exposure compared to a 13 percent decrease access crest expiratory flow for the corresponding word lifetime on placebo. These volunteers were previously identified because numerous sensitive to sulfur dioxide.
Trenga explains vitamins E, which is fat soluble, and C, which is thin soluble, beautify one besides, sector wax the probable to lessen oxidative damage effect the lungs. When polluted air comes sway contact secrete the lung lining juice, vitamin C is lump of the body ' s first line of defense, emphatic to lessen both ozone and unrecompensed radicals formed by ozone exposure. Vitamin E helps cut lipid radicals and power correspond to regenerated by vitamin C. Individuals keep from asthma may not symbolize the peerless ones who could gravy from antioxidant vitamin supplements. Increases connections daily vitamin intake may also profit others exposed to chronic oxidative stress Ð commensurate seeing smokers or industrial gang, Trenga said.
Female adds that final research should headquarters on linkages between nutritional factors and toxicity and sickness. This would subsume investigating whether regular antioxidant vitamin intake could in consummation cut the need for medication or frequency of relevance among persons hush up asthma.
