5,000 couples join study to uncover hidden factors in IVF success

This study is looking at how things in your everyday environment, like chemicals from plastics or air pollution, and personal habits, such as diet and stress, might affect the success of fertility treatments like IVF. Researchers will follow about 5,000 couples in China who are already getting fertility treatment. Participants will answer questions and give small blood or urine samples. The goal is to find out which factors might lower the chance of having a baby, so doctors and patients can make better choices in the future.