This article will explain what pollen is, where it comes from, and how it relates to allergies.

Asthma is strongly linked to environmental irritants and allergens. It is often triggered by physical exertion.

Typical asthma triggers include smoke (tobacco, wood fires etc.), chemicals, pollen, dust and dust mites, mold, pet dander and cockroaches.

Here are hidden asthma factors that no one is talking about: wheat and gluten.

These foods are probably not direct asthma triggers for most people.

A surprising number of people may be experiencing asthma from wheat and gluten, but indirectly.