"Our study findings support the concept of ‘biological superfertility’ in women with RMC and present a unique finding that superfertility may be more prevalent in obese women with a history of RMC. Further prospective studies in women with idiopathic RMC are required to confirm the association of BMI, RMC and superfertility. If confirmed, further investigation is required to understand why obesity predisposes to superfertility. Superfertility may likely be linked to impaired endometrial development in the peri‐implantation period; further research to describe the peri‐implantation endometrium in obese women and to study the exact mechanism by which obesity affects the endometrium is required. Clinical trials with therapeutic targets to improve decidualisation and thus reproductive outcome in obese women could hold significant clinical potential."