
Risks of Surrogates with High BMI: What You Need to Know
When considering surrogacy, one of the most important factors to evaluate is the Body Mass Index (BMI) of the surrogate. Risks of surrogates with high BMI can significantly impact the surrogacy process, and understanding the BMI requirements for surrogates is essential to ensuring a safe and successful pregnancy.
Why BMI Matters in Surrogacy
BMI is a key indicator of whether a surrogate is physically capable of carrying a healthy pregnancy. Surrogacy professionals set strict BMI guidelines because being overweight can increase the risks of pregnancy complications for both the surrogate and the child. Fertility clinics and professionals generally require surrogates to meet specific BMI criteria to reduce the chances of health issues during the pregnancy.

BMI Requirements for Surrogates
According to the American Society for Reproductive Medicine (ASRM), surrogates should generally have a BMI below 32 for Caucasian and Black women, and below 30 for Asian women. These thresholds are designed to reduce the health risks associated with higher BMI levels, which can delay conception and lead to complications during pregnancy.
The BMI requirements for surrogates are crucial in minimizing potential challenges during the surrogacy journey. A surrogate with a BMI over 35, classified as Level 2 obesity, can experience more than double the time to conceive. Additionally, low BMI (below 19) may also cause delays in conception, highlighting the importance of maintaining a balanced weight.
Ideal BMI for Surrogates
Most surrogacy professionals recommend an ideal BMI range of 21.5 to 28.5 for surrogates. This range helps avoid the health risks associated with both obesity and being underweight. Women outside this range, either underweight or overweight, may face delays or complications that can increase the emotional and financial strain on both the surrogate and the intended parents.

Pregnancy Complications for Overweight Surrogates
Overweight surrogates are at a higher risk for several pregnancy-related complications, including:
- Difficulty conceiving
- High blood pressure
- Gestational diabetes
- Preeclampsia
- Blood clotting issues
- Sleep apnea
- Increased chances of needing a C-section
- Longer postnatal recovery
In more severe cases, being overweight can lead to stillbirth, miscarriage, or other pregnancy-related infections. These complications are why surrogacy professionals strictly enforce BMI guidelines, ensuring that surrogates can safely carry and deliver a healthy baby.

How BMI Affects the Surrogacy Process
Surrogacy is a delicate process that requires close monitoring of both the surrogate’s health and the pregnancy. A healthy BMI ensures that conception is more likely to happen without delays, reducing emotional and financial burdens on both the surrogate and intended parents. Screening surrogates with a BMI below 32 helps avoid complications and ensures a smoother IVF process.
Understanding BMI and Its Impact on Health
BMI is a measurement that estimates body fat by comparing weight to height. It serves as a reliable indicator of potential health risks related to obesity, such as diabetes and cardiovascular issues. In surrogacy, BMI is used as a key factor in determining whether a surrogate is medically fit to carry a child.