Stroke Rates Nearly Doubled In Adults Under 55, Study Finds

Stroke probably isn't high on the list of health problems you're thinking about in your 20s, 30s, or 40s. At that age, we're much more likely to be paying attention to our metabolism, fertility, fitness, or maybe the occasional high cholesterol result at an annual physical.

And historically, that has made some sense. Age remains an important risk factor for stroke, and the condition is much more common later in life. But being young doesn't make you immune to the cardiovascular risk factors that can set the stage for one.

The study, published in Neurology, the medical journal of the American Academy of Neurology, tracked first-time strokes among adults ages 20 to 54 living in the Greater Cincinnati and Northern Kentucky region.

Researchers identified 2,076 first-ever strokes between 1993 and 2020, allowing them to compare how often strokes occurred in younger adults across nearly three decades.

In 1993 and 1994, there were 33.9 strokes for every 100,000 person-years. By 2020, that number had climbed to 62.2, an increase of about 83%.

The researchers also looked at the health characteristics of younger adults who experienced strokes, and several familiar cardiovascular risk factors became more common over time.

High blood pressure, diabetes, atrial fibrillation, and substance use all increased among people who had strokes. Substance use saw an especially large jump, rising from 4.6% in the early 1990s to 40.2% in 2020, much of which reflected marijuana use.

That doesn't mean researchers can point to any one of these factors and say it's responsible for the rise in strokes. The study didn't include comparable risk-factor data from people who didn't have strokes, so it couldn't determine whether these changes actually explain the trend.

Researchers can't say these risk factors are behind the increase in strokes, but their prevalence among younger patients is a reminder that protecting your heart and blood vessels isn't something to save for later in life.

There was one encouraging shift over the study period: More people survived. Thirty-day mortality after a stroke declined modestly, from 11.7% to 9.4%. But surviving a stroke doesn't necessarily mean walking away unaffected. 

None of this means you need to spend your 20s or 30s worrying about having a stroke. But it is a good reason to pay attention to some of the cardiovascular health markers that are easy to ignore when you otherwise feel healthy.

Blood pressure is a big one. High blood pressure is a major modifiable risk factor for stroke, and you can have it for years without noticing any symptoms. Knowing your blood pressure, blood sugar, and cholesterol gives you a chance to catch changes early and work with your doctor to address them. Staying active, not smoking, and properly managing conditions like diabetes or atrial fibrillation can also help lower stroke risk.

It's easy to think of stroke prevention as something that becomes relevant once you're much older. This research is a reminder that many of the factors that shape cardiovascular and brain health are already worth paying attention to decades earlier.