Mediterranean diet adherence in pregnant women: results of a survey in North East of Italy

Background In literature, few studies evaluated Mediterranean diet (MD) adherence in pregnant women, so we decided to conduct a survey to analyze MD and healthy habits in pregnant women living in North East of Italy, in 2018. Methods In our monocentric observational study, we enrolled >18 years pregnant women (2nd-3rd trimester) to evaluate MD adherence through “PREDIMED” validated questionnaire. Based on previous studies on MD score, women were classified into High-MD adherence (score >8; range 0-14) and low-MD adherence group (score ≤ 8). Comparisons between groups were performed using a t-test, Wilcoxon-Mann-Whitney test, chi square test and regression models as appropriate. We also investigated BMI (body mass index) and healthy habits before and during pregnancy. Results We analyzed 113 questionnaires and MD score, ranging from 3 to 13, had a mean value of 8.04 (SD 1.95), with low MD adherence in 63% (71) of our sample. Women (mean age 32 years; min 22- max 43; SD 1.95) were mostly employed (95; 84%) and alcohol consumers before pregnancy 79 (70%), especially wine 53 (47%). 5 (4%) didn't quit smoking while pregnant. Comparing BMI data before and during pregnancy to international recommendations, we found inadequate weight gain for each BMI category (100% in underweight, 70.7% in normal weight, 35% in overweight, 50% in obese range). Age was associated with MD adherence (β 0.11; 95%CI 0.04-0.17). Employment was also positively associated with higher MD values (p 0.002). Wine assumption before pregnancy was statistically significant associated with high MD group (p 0.0334). Conclusions In our study we found MD adherence levels lower than expected and an inadequate weight gain during pregnancy. MD seems also to be age and employment-related. Wine consumption before pregnancy and its positive association with MD need to be further analyzed. Key messages Mediterranean Diet adherence among pregnant women studied is not high and weight gain is frequently inadequate. Age and employment status might influence MD adherence in pregnancy.