At Circle, one question that often comes up is: “Why is surrogate and egg donor BMI so important?” It is actually one of our most asked questions from surrogates and egg donors. In recent years, the conversation around body mass index (BMI) and its accuracy in determining overall health has presented an abundance of new information. We understand that BMI is not a clear indicator of health and that women with a BMI over our requirements are able to conceive naturally and carr