Cannabis Use Tied to 37% Higher Stroke Risk A study involving more than 100 million people has uncovered strong links between recreational drug use and stroke risk, especially among younger adults. According to the University of Cambridge team, cocaine use nearly doubled the risk of stroke, amphetamines more than doubled it, and cannabis use was associated with a 37% increase ( University of Cambridge, 2026 ). Drugs and Stroke: A Closer Look Stroke remains one of the world’s leading causes of death and disability. While major risk factors—like diet, inactivity, and high blood pressure—are well known and modifiable, recreational drug use is often overlooked. Yet, in 2024, nearly 9% of adults aged 16 to 59 in England and Wales—about 2.9 million people—reported using a recreational drug over the previous year. In the US, more than half of people over age 12 have tried substances such as cocaine, cannabis, or opiates at least once ( ONS, 2025 ; SAMHSA, 2025 ). The Evidence: Meta-Analy...