Author Interviews, Cannabis, Medical Imaging, Pulmonary Disease / 10.12.2023

MedicalResearch.com Interview with: Jessie Kang, MD, FRCPC Assistant professor Department of Diagnostic Radiology Faculty of Medicine Dalhousie University   MedicalResearch.com: What is the background for this study?
  • Marijuana is the most widely used illicit psychoactive substance in the world.
  • Use has increased in Canada since legalization of non-medical marijuana in 2018.
  • It is commonly believed that smoking marijuana is not harmful to the lungs. There is an abundance of established research that identifies the harms of cigarette smoking. In contrast, very little is known about the effects of marijuana smoking, and even less research has been done on the combined effects of smoking marijuana and cigarettes.
To determine the effects of marijuana and cigarette smoking, we examined the chest CT images of four patient groups: non-smokers, cigarette smokers, marijuana smokers, and combined marijuana and cigarette smokers. Marijuana smokers included in the study had smoked marijuana at least four times a month for two years. Patients who ingested marijuana via edibles or oral drops were excluded from the study. (more…)
Author Interviews, Environmental Risks, JAMA, NIH, Pulmonary Disease / 13.08.2019

MedicalResearch.com Interview with: Joel Kaufman, MD, MPH, Professor   Environmental & Occupational Health Sciences, Medicine, and Epidemiology University of Washington  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Increasingly, it is recognized that chronic lung diseases like emphysema occur in nonsmokers and rates of these diseases are continuing to increase.  We really need to understand what’s causing chronic lung disease. Air pollutants are known to make disease worse in people with prior lung disease, but little is known about whether long-term exposure to air pollutants can cause chronic lung disease. We found that higher residential concentrations of air pollutants—especially ozone and traffic-related air pollutants—are associated with changes in the lung—emphysema-like changes in the lung.  The associations were strong and suggest that air pollution may be an important contributor to chronic lung disease.  (more…)