Vegetalization of the Maternal Diet During Pregnancy: Association With Pregnancy Outcomes and Newborn Health.

We will obtain a global index of vegetalization of the diet (the Plant based Diet Index: PDI) from data obtained using semi-quantitative questionnaires on food frequency (Food Frequency Questionnaire (FFQ)) validated on the national ELFE cohort (French Longitudinal Study from Childhood (https://www.elfe-france.fr)) and completed by women in the 1st trimester of pregnancy (T1) and at delivery.

One tube collection of 4 mL maternal blood in the first trimester and at delivery.