Documented substance use among stroke patients aged 20 to 54 increased from 4.6% in 1993–1994 to 40.2% in 2020.

From the articleStrokes have nearly doubled among younger adults, and scientists aren't sure whyAlso in Stroke rates nearly doubled among adults 20 to 54 in Cincinnati region since 1990s, More young adults are having strokes—study reveals troubling trend, Stroke rates nearly doubled among younger adults over three decades, Strokes aren’t just an issue for older adults. What you can do to prevent risks | CNN, Strokes nearly double among adults under a certain age in disturbing trend, Stroke cases among young US adults nearly doubled in 30 years, University of Cincinnati study finds, Stroke Rates Rise Sharply Among Younger Adults