Which risk factor is modifiable and heavily associated with stroke?

Smoking is recognized as a modifiable risk factor that has a significant association with stroke. Unlike age, genetic predisposition, or a prior history of stroke—which are non-modifiable factors—smoking can be actively changed through lifestyle interventions and cessation programs. The harmful substances in tobacco can damage blood vessels, increase blood pressure, and contribute to the formation of blood clots, all of which heighten the risk of stroke.

Addressing smoking can lead to a substantial reduction in stroke incidence, making it a key focus for stroke prevention strategies. Public health initiatives often prioritize smoking cessation as a primary method for reducing stroke risks in populations, demonstrating its importance and modifiability.