The definition of recurrent pregnancy loss (RPL) in the US is 2 or more consecutive failed clinical pregnancies documented by ultrasound or histopathology, while, in the United Kingdom, the definition is as having 3 or more consecutive early pregnancy losses. Up to 50 percent of cases of recurrent pregnancy loss lack a clear etiology. Where do we stand, in 2023, in regards to our understanding of the effects of inherited thrombophilias on recurrent pregnancy losses? Do they cause recurrent ABs? Does LMWH help? In this episode, we will summarize a June 2023 publication in the Lancet that provides a clear answer.