Depression and Anxiety: Lack of Associations with an Inadequate Diet in a Sample of Pregnant Women with a History of Bariatric Surgery-a Multicenter Prospective Controlled Cohort Study.

Background: Anxiety and depression levels are higher in obese compared to those in normal weight pregnant women. The aims of this study are to examine anxiety and depression in pregnancy following bariatric surgery and to compare with obese pregnant controls considering the dietary intake of polyunsaturated fatty acids (PUFA), folate, and vitamin B.

Methods: Anxiety (State-Trait Anxiety Inventory) and depression (Edinburgh Postnatal Depression Scale) were examined in the first (T1) and third (T3) pregnancy trimester in 54 women with bariatric surgery and 25 obese. T1 and T3 dietary intake of PUFA, folate, and vitamin B intake was assessed using a 3-day food record. Mixed models with a compound symmetry covariance structure and regression models were applied.

Results: About half of the women with surgery had high state and trait anxiety scores (≥ 40), which did not significantly change during pregnancy. Every 10-kg postoperative weight loss was associated with an increase in T1 state and trait anxiety with respectively 2.7 and 2.3 points. A smoking woman had a 8.6-point higher state anxiety score than a non-smoking woman in T1. In T3, every additional hour of sleep was associated with a decrease in trait anxiety score with 1.59 points. Anxiety and depression scores were not associated with and could not be explained by inadequate PUFAs, folate, and vitamin B intakes. Anxiety scores were higher following surgery than those in untreated obesity at both time points.

Conclusion: Pregnancy following bariatric surgery induces high levels of anxiety that are not associated with an inadequate maternal diet.