3. Stress. Stress is bad for your overall health, and can be especially dangerous to asthma sufferers. Everyday Health reports a massive study of more than 200,000 people found that psychological stress is strongly linked to asthma symptoms.
4. Food additives. There are many reasons to choose whole fruits and vegetables over packaged foods. Dr. Zitt warns food additives that contain the word “sulfite” in them (used to preserve, color, and flavor food) are among the most asthmatic. Deli meats high in nitrates, yellow food coloring containing tartrazine, and MSG are other food additives linked to asthma.