Microplastic Pollution and Human Health

Clinicians should weigh benefits against risks when engaging patients in informed discussions about cannabis or cannabinoid use. Kevin Hill, MD, MHS, of Harvard Medical School joins JAMA Senior Editor Karen Lasser, MD, MPH, to discuss the current evidence about the therapeutic use of cannabis and cannabinoids in adults, potential harms, and evidence-based clinical guidance. Related Content: Therapeutic Use of Cannabis and Cannabinoids

Peripheral neuropathy affects approximately 1% of adults worldwide and can be associated with significant disability. Author Michelle Mauermann, MD, of the Mayo Clinic in Minnesota joins JAMA Deputy Editor Mary M. McDermott, MD, to discuss diagnosis and optimal management of peripheral neuropathy. Related Content: Peripheral Neuropathy

Metabolic dysfunction-associated steatotic liver disease (MASLD), an increasingly prevalent condition among adults worldwide, is associated with liver-related complications, hepatocellular carcinoma, and certain extrahepatic cancers. Author Norbert Stefan, MD, from the University Hospital of Tübingen in Tübingen, Germany, discusses this and more with JAMA Deputy Editor Kristin Walter, MD, MS. Related Content: Metabolic Dysfunction–Associated Steatotic Liver Disease in Adults ----------------------------------- JAMA Editors' Summary

The JAMA Summit on Firearm Violence convened 60 thought leaders from a wide array of disciplines to chart a roadmap that could lead to substantial reductions in firearm harms by 2040. Frederick P. Rivara, MD, MPH, of the University of Washington joins JAMA Editor in Chief Kirsten Bibbins-Domingo, PhD, MD, MAS, to discuss the Summit and steps that could lead to a safer world by 2040. Related Content: Toward a Safer World by 2040 Reducing Firearm Violence and Harms ----------------------------------- JAMA Editors' Summary

Keratinocyte carcinomas, which include basal cell carcinoma and squamous cell carcinoma, are common forms of skin cancer. Approximately 5.4 million keratinocyte carcinomas are diagnosed in the US annually. Author Mackenzie R. Wehner, MD, MPhil, of the University of Texas MD Anderson Cancer Center joins JAMA Associate Editor David Simel, MD, MHS, to discuss treatment of these types of nonmelanoma skin cancer. Related Content: Keratinocyte Carcinoma ----------------------------------- JAMA Editors' Summary

Lung cancer in nonsmoking individuals is increasing worldwide and currently accounts for 15% to 20% of lung cancer cases globally. Benjamin Solomon, PhD, of the Peter MacCallum Cancer Centre in Melbourne, Australia, discusses the epidemiology and treatment of lung cancer in nonsmoking patients with JAMA Deputy Editor Kristin Walter, MD, MS. Related Content: Lung Cancer in Nonsmoking Individuals ----------------------------------- JAMA Editors' Summary

Syphilis infections have increased in the US and worldwide over the past decade. Left untreated, syphilis can cause blindness, deafness, psychosis, dementia, and peripheral nerve damage, and can cause congenital syphilis. Author Franco Chevalier, MD, MPH, from the San Francisco Department of Public Health discusses this and more with JAMA Deputy Editor Preeti Malani, MD, MSJ. Related Content: Syphilis ----------------------------------- JAMA Editors' Summary

Microplastics, defined as plastics smaller than 5 mm, have been detected in human tissues at increasing rates and are associated with potential adverse health effects. Author David Christiani, MD, MPH, from the Department of Environmental Health at Harvard T.H. Chan School of Public Health, discusses this topic and more with JAMA Deputy Editor Kristin Walter, MD, MS. Related Content: Microplastics and Human Health ----------------------------------- JAMA Editors' Summary

Severe refractory asthma, which affects approximately 1% to 5% of patients with asthma, is associated with increased morbidity and mortality. Author Juan Carlos Cardet, MD, MPH, of the University of South Florida joins JAMA Deputy Editor Kristin Walter, MD, MS, to discuss the management of patients with severe refractory asthma, including first-line medications and biologics. Related Content: Management of Severe Refractory Asthma ----------------------------------- JAMA Editors' Summary

Epidemiologist Brian Lee, PhD, discusses his study on acetaminophen use during pregnancy and children's risk of autism and other neurodevelopmental disorders in this interview with JAMA Deputy Editor Linda Brubaker, MD. Related Content: Acetaminophen Use in Pregnancy—Study Author Explains the Data ----------------------------------- JAMA Editors' Summary