Vitamin C can cause asthma?

From HealthDay: Vitamin Intake During Pregnancy May Affect Respiratory Health of Kids

But the shock came when they looked at vitamin C intake.

"Much to our surprise and consternation, we also demonstrated that a high
maternal intake of vitamin C was associated with increased wheeze in the second
year of life," said researcher Dr. Graham Devereux, a consultant respiratory
physician at the Aberdeen Royal Infirmary.

Now I'm trying to remember how many grapefruits I ate during my first pregnancy....