While cannabinoids have established medical applications for pain, nausea, spasticity, and epilepsy, high-THC exposure can cause neurological, cardiovascular, gastrointestinal, and ophthalmological adverse effects, especially in children.
Healthcare providers, cannabis users, parents, policymakers, anyone wanting a balanced view of cannabis benefits and risks
Cannabis toxicity in children can cause stupor, seizures, and coma
What the researchers found
Established medical uses include chronic pain, chemotherapy nausea, appetite stimulation, MS spasticity, and epilepsy. High THC exposure causes adverse effects including dizziness, drowsiness, seizures, tachycardia, hypertension, nausea, and mydriasis. Cannabis toxicity in children can cause stupor, lethargy, seizures, and coma.
Why it matters
As more countries legalize cannabis, understanding both its legitimate medical uses and its toxicity profile is essential for balanced public health policy and individual decision-making.
The numbers in context
THC is the primary psychoactive compound; CBD has medical applications; adverse effects affect neurological, cardiovascular, gastrointestinal, and ophthalmological systems; pediatric toxicity can include coma
How the study worked
Comprehensive review of both therapeutic effects and acute/chronic toxic effects of cannabis use on various body systems.
What this study cannot tell us
Broad review covering many topics without deep analysis of any single area. Adverse effect severity depends heavily on dose, potency, route, and individual factors not fully addressed.
How to read the evidence
Comprehensive review covering both therapeutic and toxic effects across multiple body systems
When this study was published
Published in 2021. Cannabis potency and product variety continue to increase, potentially affecting both therapeutic and toxic profiles.
The bigger picture
The dual nature of cannabis as both medicine and potential toxin underscores the importance of regulated access, accurate labeling, dosing guidance, and childproof packaging.
Questions still open
- Can therapeutic doses of cannabis be separated from toxic doses with enough precision for clinical use? How do newer high-potency products change the toxicity profile? Are current regulatory frameworks adequate to prevent pediatric exposures?
Common questions
What are the medical uses of cannabis?
What happens with cannabis overdose?
Read the original research
Cannabis: A Toxin-Producing Plant with Potential Therapeutic Uses.
Toxins, 13(2)
Citation
Breijyeh, Zeinab; Jubeh, Buthaina; Bufo, Sabino A; Karaman, Rafik; Scrano, Laura. (2021). Cannabis: A Toxin-Producing Plant with Potential Therapeutic Uses.. Toxins, 13(2). https://doi.org/10.3390/toxins13020117
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