Cannabis
weed · THC · carts · edibles · flower · dabs
Way stronger than it used to be, and treated as harmless anyway.
Educational only. Not medical advice. Information can change, so verify specifics with a current source. Dosing, interactions, and legality vary by location. In a crisis call 911 or 988.
Don't drive impaired, on anything. Alcohol, cannabis, stimulants, and the rest all slow your reaction time, judgment, and coordination, and stimulants can push you into aggressive, reckless driving. Using two at once stacks the impairment. It is illegal in all 50 states, and a DUI is the same charge whether it was alcohol or another drug. The bigger point: impaired driving kills people who had nothing to do with your night. If you feel different at all, you drive different. Hand over the keys, get a ride, or wait it out.
Cannabis is a plant, and its main active ingredient, delta-9-THC, is what gets you high. People smoke it, vape it, or eat it. What's on the market now is a lot stronger than a decade ago. Between 1995 and 2022 the average THC in seized cannabis roughly quadrupled, from about 4% to 16%, and dispensary concentrates like dabs and carts can top 40%.
It's also the most-used federally illegal drug among young adults. In 2023, about 36.5% of US 18-to-25-year-olds, roughly 12.4 million people, used it in the past year. It's common, which is part of why getting the facts straight matters.
THC acts on your endocannabinoid system. It binds CB1 receptors, which are dense in the hippocampus, cerebellum, and reward circuits. That raises dopamine in the nucleus accumbens, the same reward signal that drives every habit-forming drug.
Use it often enough and the system adapts. Tolerance climbs, you need more for the same effect, and without it your own baseline can feel flat or unmotivated. That blunting doesn't get talked about much.
Short term, you get euphoria and a shifted sense of time and the senses, along with worse short-term memory, slower reactions, and clumsier coordination. At higher doses, and with how strong products are now, anxiety, paranoia, and a racing heart are pretty common.
The brain keeps developing into your mid-20s. Using cannabis before 18 can affect how it builds connections for attention, memory, and learning, and those effects may be long-lasting or even permanent. Starting young and using often is also the strongest predictor of developing cannabis use disorder.
There's also a mental-health link. Frequent, high-potency use is tied to earlier onset of psychosis in people who are genetically at risk for disorders like schizophrenia, and to worse symptoms in people who already have them. If that runs in your family, the risk is higher for you specifically.
Based on about $30 a week, a couple grams of mid-grade flower. Real spending swings a lot with tolerance, prices, and what you buy, so use the savings calculator for your own.
Cannabis slows your coordination and reaction time, so driving high is genuinely dangerous. Strong products raise the odds of acute anxiety or paranoia, and psychosis for people who are vulnerable to it. Edibles land people in the ER a lot, because the slow onset tricks them into taking way too much.
- Edibles are slow. They can take one to two hours to kick in. Start low, around 2.5 to 5 mg THC, and wait the full time before taking more. Most 'I greened out' stories come from re-dosing too soon.
- Respect the strength. Today's flower and especially concentrates are far stronger than older advice assumes, so a little goes further and keeps the risk down.
- If psychosis or schizophrenia runs in your family, frequent or high-potency use carries real added risk for you. Go easy, or skip it.
- Be careful crossfading. Mixing cannabis with alcohol amplifies both and is a fast way to green out.
- Your brain is still wiring into your mid-20s. Waiting longer to start, and keeping it occasional, lowers the long-term risks.
W.I.R.E. is an educational harm-reduction resource, not a substitute for a doctor or crisis professional. In an emergency call 911. For free, confidential help anytime, call or text 988 (Suicide & Crisis Lifeline) or 1-800-662-4357 (SAMHSA).
We work to cite and update every claim, but we cannot guarantee it is complete or current. Verify anything you act on with an authoritative source, especially dosing, drug interactions, and legality, which change over time and vary by location.
LAST FACT-CHECKED · 2026-06-16