SAFETY
Risk needs context.
Clear accounts of known effects, emerging signals, vulnerable populations, and the limits of current evidence.
What is THC? A research-first guide
How delta-9-tetrahydrocannabinol interacts with the body, what researchers measure, and where simple explanations fall short.
Cannabinoid hyperemesis syndrome: signs and evidence
A recurrent vomiting syndrome associated with prolonged cannabis exposure—and why recognition matters.
Cannabis side effects and risk factors
A structured overview of short-term effects, longer-term associations, and groups that face higher risk.
Cannabis and driving: impairment, testing, and uncertainty
THC can impair skills needed for driving, while a blood or urine result cannot by itself measure present impairment.
Cannabis during pregnancy and breastfeeding
Major health agencies advise avoiding THC, CBD, and cannabis while pregnant or breastfeeding because safety has not been established and potential harms remain.
Cannabis, psychosis, and mental health
Cannabis exposure is associated with psychosis risk, especially with earlier and more frequent use, but individual outcomes cannot be predicted from association alone.
CBD interactions and liver risk
CBD can change medication exposure and affect the liver; retail availability does not make it interaction-free.
Cannabis edibles and accidental child poisoning
Delayed effects, concentrated THC, and familiar-looking packaging create a preventable poisoning risk for children.
Cannabis use disorder and withdrawal
Frequent cannabis use can become difficult to control, and stopping after sustained exposure can produce a recognized withdrawal syndrome.