Prenatal cannabis exposure is linked to low birth weight followed by rapid weight gain and childhood obesity
Across 47 epidemiologic and 12 animal studies, prenatal cannabis exposure consistently predicted low birth weight, followed by rapid postnatal weight gain, increased body fat, and higher glucose levels in childhood.
Quick Facts
What This Study Found
Prenatal cannabis exposure is consistently associated with small for gestational age and low birth weight. After birth, exposed offspring gain weight rapidly and show increased adiposity and higher glucose levels in childhood.
Key Numbers
47 epidemiologic studies and 12 animal studies reviewed. Consistent findings: low birth weight, rapid postnatal weight gain, increased childhood adiposity, higher glucose levels.
How They Did This
Literature review of 47 epidemiologic studies and 12 animal studies identified through PubMed search from January 2014 through June 2023.
Why This Research Matters
Low birth weight followed by rapid weight gain is a well-established risk trajectory for adult obesity, diabetes, and cardiovascular disease. If prenatal cannabis exposure initiates this trajectory, the health consequences may not become apparent for decades.
The Bigger Picture
With prenatal cannabis use rising alongside legalization, a generation of children may be on an obesogenic trajectory that was set before birth.
What This Study Doesn't Tell Us
Most studies cannot fully control for confounders (tobacco, alcohol, nutrition, socioeconomic status). THC/CBD ratios and doses vary. Causality not definitively established.
Questions This Raises
- ?Does the THC-to-CBD ratio affect the severity of the obesogenic programming?
- ?Would early metabolic screening of cannabis-exposed children allow preventive interventions?
Trust & Context
- Key Stat:
- consistently link prenatal cannabis exposure to low birth weight followed by rapid postnatal weight gain and childhood metabolic changes
- Evidence Grade:
- Comprehensive review with consistent findings across human and animal studies, though confounding in epidemiologic research limits causal certainty.
- Study Age:
- 2024 publication reviewing studies through June 2023.
- Original Title:
- Prenatal Exposure to Cannabis: Effects on Childhood Obesity and Cardiometabolic Health.
- Published In:
- Current obesity reports, 13(1), 154-166 (2024)
- Authors:
- Moore, Brianna F(4)
- Database ID:
- RTHC-05566
Evidence Hierarchy
Summarizes existing research on a topic.
What do these levels mean? →Frequently Asked Questions
Does cannabis during pregnancy cause childhood obesity?
The evidence consistently links prenatal cannabis exposure to a pattern of low birth weight followed by rapid weight gain and increased body fat in childhood, though direct causation is not proven.
Why does low birth weight lead to weight gain later?
Fetal programming theory suggests nutrient deprivation in utero triggers metabolic adaptations that promote fat storage after birth.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-05566APA
Moore, Brianna F. (2024). Prenatal Exposure to Cannabis: Effects on Childhood Obesity and Cardiometabolic Health.. Current obesity reports, 13(1), 154-166. https://doi.org/10.1007/s13679-023-00544-x
MLA
Moore, Brianna F. "Prenatal Exposure to Cannabis: Effects on Childhood Obesity and Cardiometabolic Health.." Current obesity reports, 2024. https://doi.org/10.1007/s13679-023-00544-x
RethinkTHC
RethinkTHC Research Database. "Prenatal Exposure to Cannabis: Effects on Childhood Obesity ..." RTHC-05566. Retrieved from https://rethinkthc.com/research/moore-2024-prenatal-exposure-to-cannabis
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.