In the United States, every 1 in 12 people has asthma. If you have asthma, you are not alone. Worldwide, there are an approximated 300 million people with asthma, according to the American Academy of Allergy Asthma & Immunology (AAAAI). These 300 million people around the globe understand just how frightening and sudden an asthma illness can be.
 that can wreak havoc on the airways.
4. Cold air
For some people with asthma, cold air restricts airways. That’s why Health.com suggests wearing a scarf that covers your nose and mouth when braving the cold winter air.
Less Talked About Triggers
1. Thunderstorms
You may be startled to learn that the rate of hospitalization for asthma attacks increases after a storm. Allergist and immunologist Dr. Myron J. Zitt describe in Everyday Health, this is because airborne allergens are released and raised during a thunderstorm.
2. Laughing or crying
Expressing strong emotions is one of the best parts of being human. But be careful next time you laugh so hard you cry. According to Dr. Zitt, heavy laughter and intense crying “is a kind of hyperventilation, which, like exercise, leads to trigger an asthmatic response.”
3. Stress
Stress is terrible for your overall health and can be exceptionally dangerous to people with asthma. Everyday Health reports an extensive study of more than 200,000 people found that psychological stress is wholly linked to asthma symptoms.
4. Food additives
There are many reasons to prefer whole fruits and vegetables over packaged foods. Dr. Zitt warns for food additives that contain the word “sulfite” in them (usually used to preserve, color, and flavor of the food) are among the most asthmatic. Deli meats high in nitrates, yellow food coloring holding tartrazine, and MSG are other food additives linked to asthma attacks.
RESOURCES HEALTH, AMERICAN ACADEMY OF ALLERGY ASTHMA & IMMUNOLOGY, CENTERS FOR DISEASE CONTROL AND PREVENTION, AND EVERYDAY HEALTH