A new study conducted by researchers with McGill University in Montreal reveals that third generation oral contraceptives do not increase a user's risk of suffering acute myocardial infarction. The report, which appears in today's issue of the journal Human Reproduction, indicates that second generation pills pose a much higher risk of cardiovascular side effects than their successors. The study involved 6,500 women who had used third generation contraceptives since 1996. Researchers involved in the inquiry, however, insist that third generation oral contraceptives be prescribed with caution to women with high blood pressure.