In recent 30 years, the global burden of cancer has become more serious, and one of social problem is population aging, plus declining birth rate, declining marriage rate and increasing divorce rate. Marriage is one of the most intimate and long-term social relations, and previous research had piecemeal reports of its impact on cancer morbidity and mortality without systematic review of evidence in high-quality population based epidemiological research. This paper summarizes the progress in research of the relationship between marital status and cancer to provide reference for future research and cancer prevention and control.

As the proportion of women with advanced maternal age increases, the incidence of poor ovarian response (POR) has been higher. Meanwhile, POR has become one of the biggest challenges for reproductive experts on account of its association with a higher cancellation rate and a lower live birth rate. Different definitions of POR population were previously used, and patient heterogeneity caused inconvenience to clinical trials and practices. In 2016, a new classification by the Patient-Oriented Strategies Encompassing Individualized Oocyte Number (POSEIDON) group was introduced, providing a more detailed stratification of the POR, and bringing forward the concept of "low prognosis" to promote more standardized strategies in these patients. Evidence-based medicine has confirmed the effectiveness of several strategies, with more and more clinical trials including POR population stratified by POSEIDON. This article reviewed newly published researches, trying to provide decision support for POR management.

As the proportion of women with advanced maternal age increases, the incidence of poor ovarian response (POR) has been higher. Meanwhile, POR has become one of the biggest challenges for reproductive experts on account of its association with a higher cancellation rate and a lower live birth rate. Different definitions of POR population were previously used, and patient heterogeneity caused inconvenience to clinical trials and practices. In 2016, a new classification by the Patient-Oriented Strategies Encompassing Individualized Oocyte Number (POSEIDON) group was introduced, providing a more detailed stratification of the POR, and bringing forward the concept of "low prognosis" to promote more standardized strategies in these patients. Evidence-based medicine has confirmed the effectiveness of several strategies, with more and more clinical trials including POR population stratified by POSEIDON. This article reviewed newly published researches, trying to provide decision support for POR management.