In 96 women with ischemic stroke, (mean age 77.9 +/- 7.4, S.D., years, body mass index, BMI = 23.7 +/- 3.91, we assessed the presence of risk factors for atherosclerosis, particularly of hyperfibrinogenemia. A control group of 96 women without relevant diseases, namely neoplasms, cardiovascular and inflammatory diseases, well matched for age and BMI was also studied. Subjects with stroke show higher values of systolic and diastolic blood pressure, total serum cholesterol, fibrinogen, hematocrit and more frequent habit of cigarette smoking. Levels of HDL-cholesterol, triglyceridemia and glycemia do not differ between the 2 groups. In stroke group fibrinogen is positively correlated with systolic and diastolic blood pressure and triglyceridemia. These findings confirm the presence of a risk profile for stroke, in which hypertension plays the most relevant role. The weight of fibrinogen in pathogenesis of stroke is likely to be related to the presence of other risk factors.