The marijuana of my youth is long gone. I wish someone had told me.
Source: cnn.com
TL;DR
- Reporter's Bad Experience: CNN's Sandee LaMotte got violently ill after smoking modern high-potency marijuana on her birthday following years without use.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- THC Rise: Cannabis THC levels jumped from about 4% in the 1970s to over 20% today, with dispensary products at 35% and concentrates at 60-90%.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- Potency Warning: High-THC weed can overwhelm past users and pose health risks like addiction for some people.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
The story at a glance
CNN health reporter Sandee LaMotte recounts getting sick from today's much stronger marijuana after abstaining for over a dozen years, contrasting it with the weaker weed of her youth. She quotes Yale psychiatrist Dr. Deepak Cyril D’Souza on soaring THC levels and risks. The piece is timed near 420 day amid expanding legalization, highlighting how potency changes affect even occasional users.[[2]](https://www.cnn.com/sitemap/news.xml)
Key points
- LaMotte and her husband bought legal cannabis from a dispensary for her birthday but she overdid it, leading to vomiting, collapse, and her husband nearly calling 911.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- THC, or delta-9-tetrahydrocannabinol, the main psychoactive in cannabis, averaged 4% in the 1970s but exceeds 20% now.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- Dispensary flower can reach 35% THC, while concentrates like wax, rosin, shatter, and hash oil hit 60% to 90%.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- Labeling accuracy on potency is questionable, something consumers need to watch, per D’Souza.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
- High potency contributes to rising addiction and could harm more people as legalization spreads.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Details and context
LaMotte notes she rarely used pot in her youth because it made her sleepy, and sharing a joint sufficed for a high back then. Over a decade later, one modern hit proved too much, showing how breeding and processing have intensified effects far beyond 1970s levels.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Dr. D’Souza, who leads Yale's Center for the Science of Cannabis and Cannabinoids, stresses even labeled products may not match stated THC due to testing issues. He compares concentrates to nicotine versions, about 20 times stronger than old-school weed.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
The article warns that for some, especially after abstinence, potent cannabis leads to bad reactions; LaMotte regrets not starting with one puff.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Key quotes
“You can even buy cannabis in dispensaries that has a THC content of 35%,” said Dr. Deepak Cyril D’Souza, Vikram Sodhi ’92 Professor of Psychiatry and director of the Yale Center for the Science of Cannabis and Cannabinoids in New Haven, Connecticut.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
“Even for products that are labeled, there’s some concern about the accuracy. That’s something consumers should be aware of,” D’Souza added.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Why it matters
Rising THC potency amid legalization means familiar routines from decades ago can backfire with intense effects. Users like past occasional smokers face sickness or worse from products far stronger than before, while addiction risks grow for broader groups. Watch for state potency limits or better labeling rules, though federal oversight remains absent.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
What changed
Weed averaged 4% THC in the 1970s, enough for a shared joint high. Now it tops 20% on average, up to 35% in flower and 90% in concentrates due to breeding and extraction. This shift happened gradually over decades as markets legalized and commercialized cannabis.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
FAQ
Q: Why did LaMotte get so sick from marijuana after years off it?
A: Modern weed's THC potency has soared since her youth, overwhelming her system after she took too much on her birthday, causing vomiting and near-panic. She shared that sharing a joint used to work fine back then, but one hit now proved excessive. Her husband feared for her breathing before she recovered.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Q: How much has THC in cannabis increased?
A: Levels rose from about 4% in the 1970s to more than 20% today, with dispensary flower at 35% and concentrates like wax or shatter between 60% and 90%. Dr. D’Souza notes this makes effects far stronger than past decades. Labeling may not always be accurate.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Q: What risks come with high-potency marijuana?
A: It can cause devastating reactions for some, including addiction, and hits harder after abstinence like LaMotte experienced. Potency drives up cannabis use disorder cases globally. Consumers should start low due to variability.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)
Q: Who warns about cannabis potency in the article?
A: Dr. Deepak Cyril D’Souza of Yale's cannabis center explains the jumps and labeling doubts. As CNN's marijuana writer, LaMotte ties it to her story. No other experts are quoted.[[1]](https://www.cnn.com/2026/04/20/health/marijuana-potency-wellness)