Blood Pressure

• According to the National Library of Medicine, high blood pressure is the top risk factor for strokes, and birth control pills may increase blood pressure. As you age, it is very important to have your blood pressure monitored if you are on the Pill.
  
  

Smoking

• Women who smoke and are over 35 are at high risk of blood clots, which can lead to stroke. Oral contraceptives aren't recommended for women who are over 35 and smoke, according to the Mayo Clinic.
  
  

Migraine Headaches

• Women with a history of migraine headaches with visual symptoms or a family history of migraine headaches are at higher risk of having a stroke, according to the American Stroke Association. For these women, a non-estrogen form of contraception is recommended, such as a progestin-only pill or a progestin shot.
  
  

Considerations

• Although there is some evidence that birth control pills may increase the risk of having a stroke, without oral contraceptives, the number of unwanted pregnancies would dramatically increase, according to a recent report from ABC News. Unwanted pregnancies and abortions are much greater health risks to women than oral contraceptives.
  
  

Benefits vs. Risks

• Doctors need to consider the benefits of oral contraceptives versus the risks for each individual case. If you are a healthy young woman, the benefits most likely outweigh the risks. If you have certain risk factors, an alternative form of birth control needs to be considered.