'Researchers from Harvard Chan School found that three types of flame retardants, called TDCIPP, TPHP, and mono-ITP, can have a major impact on pregnancies. The study followed 211 women undergoing in vitro fertilization (IVF), and found that 80% of them showed evidence of the chemicals in their urine. Women with the highest levels of exposure fared the worst, with a wide range of effects:10% lower chance of a successful fertilization31% lower chance of the embryo implanting in the uterus41% fewer clinical pregnancies (where fetal heartbeat is confirmed by ultrasound)38% fewer live births https://www.hsph.harvard.edu/c-change/subtopics/flame-retard...