>Another limitation is that researchers relied on dietary questionnaires women completed during prenatal visits that asked them to recall how they ate in the mo

>Another limitation is that researchers relied on dietary questionnaires women completed during prenatal visits that asked them to recall how they ate in the month before they conceived - a method that isn’t always accurate. Isn't always accurate? More like "Is always inaccurate" people are notoriously bad self reporters even when they're logging things day by day.