Cannabis, OBGYNE, Pediatrics / 30.10.2024
JAMA Peds Study Finds Prenatal Exposure to Cannabis Linked to Aggressive Behavior and Decreased Executive Function in Children
MedicalResearch.com Interview with:
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Dr. Keim[/caption]
Sarah Keim, PhD
Associate Professor, Epidemiology
College of Public Health
The Ohio State University
MedicalResearch.com: What is the background for this study?
Response: Marijuana is the illicit substance most commonly used during pregnancy, and use is increasing. Some evidence suggests that marijuana is associated with deficits in executive function and increased delinquent behavior in school-age children and adolescents, with potential downstream impacts on achievement and social functioning.
However, this evidence comes largely from only 2 studies several decades old. Today cannabis is more than 10 times more potent than it was several decades ago.
Dr. Keim[/caption]
Sarah Keim, PhD
Associate Professor, Epidemiology
College of Public Health
The Ohio State University
MedicalResearch.com: What is the background for this study?
Response: Marijuana is the illicit substance most commonly used during pregnancy, and use is increasing. Some evidence suggests that marijuana is associated with deficits in executive function and increased delinquent behavior in school-age children and adolescents, with potential downstream impacts on achievement and social functioning.
However, this evidence comes largely from only 2 studies several decades old. Today cannabis is more than 10 times more potent than it was several decades ago.
Dr. Sood[/caption]
Neeraj Sood, PhD
Verna and Peter Dauterive Hall
University Park Campus
University of Southern California
Los Angeles, CA
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: We conducted this study to inform school COVID-19 policies.
The main findings are that the median duration of infectivity after a positive COVID-19 test in children is 3 days. The median duration of infectivity does not vary with vaccination. 
Dr. Miller[/caption]
Alex P. Miller, PhD
TranSTAR T32 Postdoctoral Fellow
Department of Psychiatry
Washington University School of Medicine
St. Louis, MO
MedicalResearch.com: What is the background for this study?
Response: Adolescent cannabis use is increasing in the United States. Prior research suggests that people who start using cannabis earlier are more likely to engage in problematic use and also experience greater mental health challenges and socioeconomic disadvantages overall. For example, children who begin using cannabis early are more likely to have behavioral problems and disorders and are more less likely to complete school.
In our study, we used data from the Adolescent Brain Cognitive Development (ABCD) Study, which is following nearly 12,000 kids across the nation to track behavior and brain development as well as health from middle childhood to young adulthood. We looked at what factors are associated with the initiation of cannabis use by age 12-14.
Dr. Stevermer[/caption]
James Stevermer, M.D., M.S.P.H.
Vice chair for clinical affairs
Professor of family and community medicine
University of Missouri
Medical director of MU Health Care Family Medicine–Callaway Physicians,
Dr. Stevermer joined the U.S. Preventive Service Task Force in January 2021.
MedicalResearch.com: What is the background for this study?
Response: Genital herpes is a common sexually transmitted infection (STI) that unfortunately has no cure and cannot accurately be detected in people who do not have signs of the condition. The current screening tests have limitations and there is a high chance that test results will say a person has the condition when they do not. In addition, the available treatments are focused on managing symptoms and preventing the condition from reoccurring. As a result, the Task Force concluded that the harms of screening outweigh the benefits.
Dr. Stingone[/caption]
Jeanette Stingone PhD
Assistant Professor, Epidemiology
Mailman School of Public Health
Columbia University
MedicalResearch.com: What is the background for this study? What are the main findings?
Response: Lead is a well-established neurotoxin, particularly when exposure occurs early in life and in childhood. Associations between elevated blood lead levels and lower scores on tests of neurodevelopment and cognition are seen consistently across studies, even when examining lower levels of exposure.
While reducing exposure to lead is the primary intervention to prevent these adverse outcomes, there aren’t many interventions designed to support the neurodevelopment of children who have been exposed to lead. Some municipalities consider elevated blood lead levels as a criteria for inclusion in Early Intervention programs. Early Intervention programs are mandated under the Individuals with Disabilities Education Act and provide services for children younger than 3 years old with disabilities or developmental delays.
The objective of this study was to compare 3rd grade standardized test scores among children who had elevated blood lead levels early in life to see if children who had received Early Intervention services performed better on these tests than those who did not receive services. Using matching methods and an existing administrative data linkage of children who were born and attended public school in New York City, we observed that children exposed to lead who received Early Intervention services scored higher on standardized tests in both math and English Language arts than children exposed to lead who did not receive services. 
Dr. Aris[/caption]
Izzuddin M Aris, PhD
Assistant Professor
Department of Population Medicine, Harvard Medical School
Division of Chronic Disease Research Across the Lifecourse
Harvard Pilgrim Health Care Institute
Boston, MA
MedicalResearch.com: What is the background for this study?
Response: Puberty is a key stage during child development. Previous research indicates that children in the United States are entering puberty at younger ages. These children may be in danger of developing certain diseases, such as type 2 diabetes, later in life. A better understanding of how early life factors affect puberty development is important for combating earlier puberty onset. .
