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Association between antioxidant vitamins and asthma outcome measures: systematic review and meta-analysis.

Asthma is less likely to occur among regular consumers of foods rich in vitamin A and C.

The objective of this study was to evaluate the relationship between dietary intake of antioxidant vitamins and the risk of developing asthma by meta-analysis. A total of 40 studies were included in this meta-analysis.

Researchers found a higher incidence of asthma in individuals with low dietary intake and serum concentrations of vitamin A and C than in persons with high plasma levels of vitamin A and C and people who consistently consumed foods high in vitamin A and C. Habitual consumption of foods rich in vitamin E did not have any significant effect on asthma risk in this study. The results of this study suggest that high consumers of vitamin A and C from dietary sources may have a low tendency of developing asthma.

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I think an important thing to notice in this study is that "foods rich in vitamin A and C" is not the same as taking vitamin supplements. In fact, taking supplements can actually do more harm than good. Stick to whole food sources! They taste a lot better than pills too.

  Marky Yvanovich
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You are so right Marky,
Food is the answer. Pills are not the answer. Health come from food, not pills. Pills can be helpful but they often have negative side effects as you have pointed out. And, yes, pills just don't taste good. So, thanks for bringing this up. All that you have said; I second the motion! :-)

  Sean Carney
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