Storke is a disabling neurological disorder and is the third cause of death
   in the U.S. The various risk factors have been investigated for stroke; the
   most important of which are age, sex, hypercholesterolemia, smoking,
   alcoholic dirnks, records of cordiac diseases(specially a trial fibrilation),
   taking oral contraceptives, takibg some kinds of drugs, etc. On obesity-
   which measured against a criterion called Body Mass Index (BMI) and its
   relevance to stroke, different kinds  of studies have been done, only to
   reach no certain results. In this research, it has been attempted to evaluate
   the effect of BMI in the two kinds of ischemic and hemorrahgic strokes,
   regardless of any other risk factors.

          This study was preformed on 200 individuals , of whom 80 were
    selected from stroke patients hospitalized in the neurology ward of Sina
   hospital of Hamadan  in 2000 and the other 120, the control group from
   people with no records of stroke. Both groups were investigated in terms of
   BMI and other risk factors, and then the results were compared with each
   other , using t-student and mantel haenszel test.

          The BMI mean in ischemic stroke and control groups was not
   significant(p=0.69)and neither was the mean hemorrhagic and control
   groups (p=0.83). comparing the odds ratio in ischemic stroke with the other
   risk factors it was indicated that none of these risk factors had any adverse
   effects as invalidator in this study.

          It is concluded that there is no significant relationship between obesity
   or BMI with any types of stroke(ischemic or hemorrhagic). Therefore more
   efforts must be undertaken to prevent the other kinds of risk factors
   mentioned.