Is the Effect of Birth Control Decreased in Overweight Women?

Young woman looking at her contraceptive pillsJust yesterday one of my patients asked me about the effectiveness of the morning-after pill in a woman like herself, who was overweight.  I knew that obesity could be associated with a decrease in the effectiveness of the birth control pill and the morning-after pill, but I could not give her better information.

Recently, there were a few review articles showing that studies are limited.  Let me give you some questions to ask your health care provider about this situation, especially since about 25% of women in the childbearing age group are considered to be obese based on their BMI:

  • How effective is the birth control pill in overweight women?
  • Being overweight, is there a pill that could be more effective?
  • Could a vaginal ring or IUD be a better consideration?
  • Is the risk of blood clots increased with the pill?
  • Does bariatric surgery have any effects with the use of the pill?

I hope these questions will open the door for a good discussion so that the best medical treatment plan can be established.

-Dr. P

Leave a Reply