This study shows that one simple antioxidant in a fairly small amount can help children breath better, especially if their problem is not more advanced.  Flavonoids, which are highly synergistic with vitamin C, were not tested in this study. I would suggest quercetin or grape seed extract be used in conjunction with vitamin C for even better results. Other important nutrients include vitamin D and magnesium.

I have been giving my children since 2003 Vitamin C as well as grape seed extract in the form of a nutrient supplement daily.

My two sons are now 23 and 19 years old and have very good skin, rarely fall sick and have been protected from cardiovascular disorders by the Bioflavonoids in the grape seed extract.

The synergistic benefits of taking a nutritional supplement that is complemented both with Vitamin C and BioFlavonoids is that the over all effect of these two nutrients can deliver more than just “1 plus 1 equals 2″. In fact it is seen to deliver many times over.

If you want younger looking skin, good cardiovascular protection and sound immune system function then take a high quality supplement of grape seed extract plus vitamins C.

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It has been hypothesised that dietary changes associated with a westernised lifestyle may have contributed to the increase in asthma in the developed world. Epidemiological evidence of an inverse association of dietary fruit intake with pulmonary function and respiratory symptoms suggests that dietary antioxidants may modify the development of respiratory disease in susceptible individuals.

Previous studies found that symptomatic asthma in adults is associated with a low dietary intake of fruit, the antioxidant nutrients vitamin C and manganese, and low plasma vitamin C levels.

A new meta-analysis review also suggests that a low dietary intake of vitamin A and C increases the risk of asthma. 40 studies (up to November 2007) of asthma, wheeze, or airway responsiveness in relation to intakes and serum concentrations of vitamins A, C and E were included in this latest review.

Dietary vitamin A intake was significantly (182µg/day) lower at in people with asthma compared to those without asthma; and vitamin A intake was 344µg/day lower in patients with severe asthma compared to those with mild asthma. Lower serum levels of vitamin C were also associated with an increased occurrence of asthma. Vitamin E intake was generally unrelated to asthma status but was significantly lower in people with severe asthma compared to people with mild asthma.

These findings suggest that diet may be a potentially modifiable risk factor for the development of asthma.

Sources: Thorax April 2009 online; Thorax 2006;61;388-393