PURPOSE OF REVIEW: This report will review existing literature on weight loss outcomes for various anti-obesity medications (AOMs) as well as their effects on human fertility, pregnancy, or breastfeeding.
RECENT FINDINGS: There is a paucity of research on the effects of AOMs on human pregnancy and fertility. The majority of AOMs are not recommended during pregnancy and breastfeeding due to known or unclear risks of harm to offspring.
SUMMARY: As the prevalence of obesity rises, AOMs have proven to be effective tools for weight loss in the general adult population. When prescribing AOMs to reproductive-aged women, providers should consider both the cardiometabolic benefits of these medications and potential effects that AOMs might have on hormonal contraception, pregnancy, or breastfeeding. Animal studies in rats, rabbits, and monkeys have suggested teratogenic effects of several medications discussed in this report. However, a lack of data on the use of many AOMs during human pregnancy or lactation makes it difficult to comment on the safety of their use in these time periods. Some AOMs show promise in promoting fertility while others might decrease the efficacy of oral contraceptives, highlighting some of the special considerations that must be taken when prescribing AOMs to reproductive-aged women. More research into the risks and benefits of AOMs in the context of reproductive-aged women's unique healthcare needs is an important step in improving this population's access to effective treatments for obesity.