Body weight and BMI (Body Mass Index) can significantly impact the outcomes of In Vitro Fertilization (IVF) treatment.

1. Ovarian Stimulation and Egg Quality: Women with a lower BMI may respond differently to the hormonal medications used for ovarian stimulation during IVF due to hormone distribution in body tissues. This can affect the quality and quantity of eggs retrieved.

2. Implantation and Pregnancy Rates: Studies have shown that both underweight and overweight women may have reduced chances of successful embryo implantation, leading to lower pregnancy rates compared to women with a normal BMI.

3. Miscarriage Risk: Higher BMI has been linked to an increased risk of miscarriage following IVF treatment. This may be related to hormonal imbalances, altered endometrial receptivity, and other factors affecting pregnancy maintenance.

4. Live Birth Rates: Research suggests that women with a healthy BMI (18.5-24.9) have higher live birth rates compared to those who are underweight or overweight. Maintaining a healthy weight can improve the chances of a successful pregnancy following IVF.

5. Complications During Pregnancy: Obesity in women undergoing IVF can lead to various pregnancy complications such as gestational diabetes, hypertension, preeclampsia, and increased risks during labor and delivery.

6. Optimal BMI Range: Generally, women with a BMI between 18.5 to 24.9 have better IVF outcomes in terms of