Full article: Health impact of e cigarettes and heated tobacco products in chronic obstructive pulmonary disease: current and emerging evidence E cigarettes use in the United States: reasons for use, perceptions, and effects on health BMC Public Health Springer Nature Link Smoking and COPD UF Health A new study published in Nicotine & Tobacco Research found that those using e cigarettes alone were more than twice as likely to develop COPD than people who didn't use any tobacco products,