Cannabis Smoke & Cardiovascular Health with Matthew Springer, PhD

SummaryIn this episode of High5 with Dr. Igor Grant, Dr. Matt Springer explains how inhaling smoke from combusted products such as tobacco and cannabis, as well as inhaling aerosol from e-cigarettes and cannabis vaping devices, may impair endothelial function, an early marker of cardiovascular risk. Drawing on rodent and human studies, he reports that chronic tobacco smokers, e-cigarette users, and cannabis smokers all show reduced vascular function.He also discusses evidence that chronic THC edible users may have impaired vascular function through a different mechanism than inhaled products. A central message is that “cannabis use” is too imprecise a term, because smoking cannabis and ingesting THC are very different exposures. His public health takeaway is simple: be aware of cardiovascular risks, practice moderation, and avoid exposing others to secondhand smoke.Key TopicsEndothelial function and its role in cardiovascular healthEffects of tobacco, cannabis, and e-cigarette smoke on blood vesselsMechanisms of smoke-induced vascular impairmentDifferences between inhaled and ingested cannabis effectsPublic health implications of secondhand smoke exposureChapters00:00 Preview01:24 Dr. Springer's Background03:43 Exploring Cardiovascular Effects of Cannabis03:43 Personal Anecdote - Paul McCartney Concert05:13 Understanding Endothelial Function09:33 The Role of Endothelial Cells in Cardiovascular Health09:58 Understanding Vascular Health and Flow Mediated Dilation12:03 Translating Rodent Studies to Human Health14:20 The Impact of Cannabis and Tobacco Smoke on Vascular Function16:53 Chronic Use: Comparing Cannabis, Tobacco, and E-Cigarettes20:15 The Science Behind Smoke and Its Effects24:48 Distinguishing Cannabis Use from Smoking Effects29:08 Moderation and Public Health Messaging34:31 Secondhand Smoke: Risks and Recommendations