Are strokes becoming more common in adults under 55?
Yes. In one large US region, the stroke rate in adults aged 20 to 54 nearly doubled between 1993 and 2020, climbing from 33.9 to 62.18 cases per 100,000 people. That is about 28 more strokes for every 100,000 younger adults.
Stroke in young adults used to be treated as a rare event. This study, published in Neurology, suggests that picture is out of date. Researchers used the Greater Cincinnati/Northern Kentucky Stroke Study, which reviews hospitalized stroke cases across the whole region, and counted 2,076 first-ever strokes among adults aged 20 to 54 across six snapshots: 1993-1994, 1999, 2005, 2010, 2015, and 2020.
The trend in older adults went the other way. Over the same years, their stroke rate fell from 618.78 to 453.04 cases per 100,000. So the progress we have made against stroke has not reached people in their 20s, 30s, 40s, and early 50s.
What the data show
Most of the increase came from ischemic stroke, the kind caused by a blocked blood vessel in the brain. That type nearly doubled in younger adults, from 23.8 to 47.3 cases per 100,000. The overall rise in young adults had about a 4 in 100 chance of being a statistical fluke (P = .04).
The patients themselves also changed. Over time, younger adults who had a stroke were more likely to have high blood pressure, diabetes, and atrial fibrillation, an irregular heart rhythm that can throw clots to the brain.
The largest shift was substance use. It became more common among young stroke patients over time. Drinking two or more alcoholic drinks a day and tobacco use did not change significantly over time.
There was some good news. After adjusting for age, sex, and race, the share of patients who died within 30 days fell from 11.7% to 9.4%, roughly from 12 in 100 to 9 in 100. That drop had about a 2 in 1,000 chance of being coincidence, and it came mostly from the two bleeding types of stroke.
Dr. Kumar’s Take
This is a stroke study, and it is also a warning about how we think about young adults. Stroke is still far less common under 55: in 2020 the rate was 62.18 cases per 100,000 in adults aged 20 to 54, compared with 453.04 in older adults, roughly seven times lower. But the young-adult rate is the one that is rising.
The marijuana finding will get the headlines, but it needs a careful reading. This study only looked at people who had a stroke. It did not compare them with people who did not, so it cannot show that marijuana caused any of these strokes. More people use marijuana now, and more people tell their doctor about it, and both of those could push the number up. The researchers themselves called it a highly common condition worth identifying, not a proven cause.
What worries me more is the rise in high blood pressure and diabetes. Those are things a simple checkup can find, often years before they cause harm. They also rarely cause symptoms, and younger adults are the group least likely to have a regular doctor.
Falling death rates are welcome. They matter more as the number of younger adults having a stroke keeps climbing.
How strong is the evidence?
The strength here is the design. Instead of relying on death certificates or insurance codes alone, stroke-trained physicians reviewed hospitalized cases across a whole region over nearly three decades. That makes the trend hard to explain away as a change in paperwork.
There are real limits. The study included only Black and White individuals, so the results may not apply to other groups. The latest data stop in 2020, so we do not know whether the rise has continued, slowed, or leveled off. The researchers also did not track people without stroke, which means they could describe how risk factors changed in stroke patients but could not measure how much each one raised the chance of having a stroke.
Practical Takeaways
- Get your blood pressure checked starting in your 20s, because high blood pressure became more common among younger stroke patients over the study period.
- Ask for a blood sugar test if you have a family history of diabetes, extra weight around the middle, or have not been tested in several years.
- If you use marijuana regularly, count it as part of your health history and tell your doctor, since it is now common among young stroke patients and its long-term effects on blood vessels are still being studied.
Related Studies and Research
- how beans and soy foods lower your risk of high blood pressure
- a gentle Chinese exercise lowers blood pressure as well as brisk walking
- whether plant-based diets lower your risk of stroke and heart disease
- teen cannabis use and the risk of psychotic and mood disorders
- after a stroke, the undamaged side of your brain may get younger
FAQs
Can you have a stroke in your 20s or 30s?
Yes. This study counted strokes starting at age 20, and the rate in adults 20 to 54 nearly doubled over nearly three decades. Strokes at younger ages can come from the same causes seen in older adults, such as high blood pressure, diabetes, and heart rhythm problems. Because young people rarely expect a stroke, they may wait before getting help. Any sudden weakness, numbness, vision loss, or trouble speaking deserves an emergency call, whatever your age.
Does smoking marijuana cause strokes?
This study cannot answer that. It found that substance use became more common among young stroke patients over time. Part of the rise may reflect more people using marijuana and more people reporting it. The link between marijuana and blood vessel health is an open research question, and larger studies that follow users over many years are needed to settle it.
Why are fewer young people dying after a stroke?
The share of young patients who died within 30 days fell from 11.7% to 9.4%. Most of that drop came from strokes caused by bleeding in or around the brain, rather than blocked arteries. Better emergency and hospital care is a likely reason, though this study was not designed to prove which changes helped. Surviving is good news, but many survivors live with lasting problems such as weakness or speech difficulty, sometimes for decades.
Bottom Line
In the Cincinnati and Northern Kentucky region, stroke in young adults nearly doubled between 1993 and 2020, while it fell in older adults. Most of the rise was ischemic stroke, and young stroke patients increasingly had high blood pressure, diabetes, atrial fibrillation, and documented substance use, especially marijuana. Fewer of them died within a month, which means more younger adults are living with the aftermath. Checking blood pressure and blood sugar early in adulthood is one of the simplest ways to push back against this trend.
