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Table 1 Dietary factors and asthma or chronic obstructive pulmonary disease: summary of the available evidence

From: Chronic obstructive pulmonary disease, asthma and protective effects of food intake: from hypothesis to evidence?

  Relatively consistent Further evidence
  evidence needed
Potentially beneficial Fruits Fish oils/n-3 fatty acids
association Vitamin C Magnesium
  Vitamin E Whole wheat
  Beta-carotene Flavonoids
   Selenium, manganese
   Copper, zinc
Potentially harmful Sodium n-6 fatty acids
association   Trans-fatty acids