Cannabis
weed · THC · carts · edibles · flower · dabs
Not harmless, not the devil — a real drug that's gotten dramatically stronger while the conversation pretended it didn't.
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 whose main psychoactive ingredient, delta-9-THC, produces the high. It's smoked, vaped, or eaten — and today's products are nothing like a decade ago. Between 1995 and 2022 the average THC potency in seized cannabis roughly quadrupled, from about 4% to 16%, and dispensary concentrates (dabs, carts) can exceed 40%.
It's also the most-used federally illegal drug among young adults: in 2023, an estimated 36.5% of US 18–25-year-olds (about 12.4 million people) used it in the past year. Common doesn't mean consequence-free — it means honest information matters more.
THC works by hijacking your endocannabinoid system — it binds CB1 receptors that are dense in the hippocampus, cerebellum, and reward circuitry. Activating CB1 increases dopamine release in the nucleus accumbens, the same 'remember this, do it again' signal every reinforcing drug leans on.
Do it often enough and the system adapts: tolerance climbs, you need more for the same effect, and your own baseline can start to feel flat or unmotivated without it. That blunting is the trade-off people rarely get told about.
Short-term: euphoria and altered perception of time and senses, but also impaired short-term memory, slower reaction time, and worse coordination. At higher doses — especially with today's potency — anxiety, paranoia, and a racing heart are common, not rare.
The brain keeps developing into the mid-20s. Using cannabis before 18 can affect how the brain 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 biggest predictor of developing cannabis use disorder.
There's also a real mental-health signal: cannabis use — especially frequent, high-potency use — is linked to earlier onset of psychosis in people with genetic risk for disorders like schizophrenia, and to worse symptoms in those who already have them. If that runs in your family, the math changes for you specifically.
Estimate: ~$30/week (a couple grams of mid-grade flower). Real spend swings hard with tolerance, market, and product — use the savings calculator for your numbers.
Cannabis impairs coordination and reaction time, so driving high is genuinely dangerous. High-potency products raise the odds of acute anxiety/paranoia and, for vulnerable people, psychosis. Edibles are a common ER visit because the delay fools people into taking far too much.
- Edibles hit slow — effects can take 1–2 hours. Start with a low dose (think 2.5–5 mg THC), then wait the full window before taking more. Most 'I greened out' stories are a re-dose too soon.
- Respect the potency. Modern flower and especially concentrates are far stronger than what older info assumes — less product gets you further, with less risk.
- If psychosis or schizophrenia runs in your family, high-potency and frequent use carry real added risk for you specifically — go easy or skip it.
- Be careful crossfading: mixing cannabis with alcohol intensifies both and is a fast track to greening out.
- Your brain is still wiring into your mid-20s — delaying use and keeping it occasional meaningfully 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