rs to prevent asthma attacks due to exercise (certain drugs can help prevent asthma symptoms from occurring after exercise). Exposure to irritants on the job Many cases of asthma are worsened or even caused by exposure to vapors, dust, gases, or fumes in the workplace. This type of asthma usually improves when the person takes a few days off from work, such as on weekends and vacations. Sensitivity to medications and sulfites About 5% to 20% of adults with asthma have attacks triggered by sensitivities or allergies to sulfites and to medications such as aspirin, ibuprofen, indomethacin, and naproxen. People with asthma should consult their physicians before taking any new medication, including those available without a prescription. Sulfites are often used to preserve foods and beverages, including tuna, foods available at salad bars, dried apples and raisins, lemon juice, grape juice, and wine.IMPORTANT NOTICE: In March, 1997, the United States Food and Drug Administration issued a warning that people with asthma or allergies as to sulfites should not eat canned white (albacore) tuna or light tuna because most canned tuna contains sulfites, even though they are not listed on the label. If you want more information about the sulfite content of specific tuna products, please call 800-283-1112, a special number set up by the tuna industry. Emotional anxiety Strong emotions and nervous stress can trigger asthma in some people. This may be due, in part, to the ability of emotions and stress to weaken the body's defenses. Allergies and AsthmaAllergies are the one of the main leading causes of asthma. About 90% of children under the age of ten that are infected with asthma have allergies. Around 70% of people under the age of thirty have asthma and 50% of those over thirty. Allergies is likely to be a helping factor to asthma if:You have close relatives with allergy (that is, a mother, father, sister, brother, aunt, uncle, or child) Asthma b...
