A relapse in eating disorder symptoms in women who were previously in remission may occur during pregnancy . In active AN or BN, body dissatisfaction and low body esteem may worsen during pregnancy  in addition to an increased frequency of restricting, binge eating-purging, and nonpurging behaviors [36, 44, 46, 51, 58]. Conversely, AN or BN symptoms and behaviors improved during pregnancy in women receiving treatment [45, 46, 53, 54] and not currently receiving treatment [47, 49, 55, 61-63]. Yet, postpartum resumption of AN and BN behaviors occurred with some regularity [45, 46, 48, 49, 54, 55, 62, 63].
Postpartum depression (PPD) requires assessment in women with AN or BN as this mood disorder is tightly linked to eating disorders [64, 65]. While most studies report an increased incidence of PPD in women with AN or BN [24, 57, 64, 65], one study reported fewer symptoms of depression in women with treated BN who delivered infants compared to women with treated BN who had not given birth .
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