to researchers, those consuming small amounts of fruit and vitamin C
are considerably more likely to suffer from symptomatic asthma.
Research participants who ate at least 46.3 grams of citrus daily were
half as likely to suffer from asthma with symptoms compared to
participants who consumed no citrus fruit. Also, a lower intake of both
vitamin C and manganese were linked to an increased risk of symptomatic
asthma. It should be noted that study findings do not support the
notion that those with less symptoms were simply living an overall
healthier lifestyle as all study participants consumed similar amounts
of calories and fat and showed similar levels of physical activity,
education, and likelihood of having smoked in the past.
Source: Thorax, May 2006.