Is Climate Change to Blame?
Global warming has the potential to worsen allergy symptoms for at least 25 million Americans, according to a report by the National Wildlife Foundation and Asthma and Allergy Foundation of America. This report predicts that, if left unchecked, climate change could lead to extended growing periods for a number of symptom-triggering respiratory allergens—such as ragweed pollen and tree pollen—and skin allergens like poison ivy.