A significant association was observed between duration of asthma and plasma vitamin C level.

PMID: 

East Mediterr Health J. 2005 Jan-Mar;11(1-2):87-95. PMID: 16532676

Abstract Title: 

Comparison of plasma and leukocyte vitamin C status between asthmatic and healthy subjects.

Abstract: 

In a case-control study the vitamin C status of 50 adults with chronic controlled asthma was compared with that of 50 randomly selected healthy controls. Vitamin C intake was assessed by 3-day dietary recall, and plasma and leukocyte vitamin C concentrations were measured colorimetrically. A positive significant correlation was found between plasma vitamin C and dietary vitamin C intake. Plasma and leukocyte vitamin C levels were significantly lower in the asthma group. Plasma vitamin C was deficient (

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