Everything you need to know about e cigarettes Vox E cigarettes and Asthma: What Are the Health Impacts? Electronic Cigarettes and Vaping in Allergic and Asthmatic Disease Immunology and Allergy Clinics E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all Young E Cigarette Users Develop Wheezing, Other Respiratory Symptoms SPH