Which risk factor is most closely associated with increased likelihood of developing stroke?

A sedentary lifestyle is closely associated with an increased likelihood of developing a stroke due to its impact on overall cardiovascular health. Engaging in regular physical activity helps maintain a healthy weight, lower blood pressure, improve cholesterol levels, and regulate blood sugar—all of which are critical factors in reducing stroke risk. A lack of physical activity can lead to obesity and other related health problems, increasing the chances of conditions such as hypertension and diabetes, which are significant contributors to stroke.

Other choices, while they may have some health implications, do not have a direct and significant association with stroke risk in the same way as a sedentary lifestyle. For instance, although a high carbohydrate diet can impact health, the type of carbohydrates and the overall balance of the diet play a more nuanced role. Rainy weather and low oxygen levels are generally not established risk factors for stroke, as strokes are more directly influenced by lifestyle and underlying health conditions rather than environmental factors like weather.