Overweight women using oral birth pills are likely to have an increased risk of a rare type of stroke suggests a study. The results showed that women who are obese (a body mass index of 30 or more) and use oral contraceptives are 30 times more prone to cerebral venous thrombosis (CVT) compared to women with normal weight. CVT or clot of cerebral veins is an uncommon disorder in the general population. However it has a higher frequency among patients younger than 40 years of age and women who are pregnant or receiving hormonal contraceptive therapy. However the study found
