Obesity and periodontitis are not associated in pregnant women.

Objective: The objective of this study was to investigate an association between obesity (exposure) and periodontitis (outcome) in pregnant women.

Background: This association was investigated and only five studies were identified as showing a positive association. However, some of these studies had limitations such as reduced sample sizes, inadequate exposure criteria and outcome measures, which question the internal validity of these investigations.

Maternal anemia and birth weight: A prospective cohort study.

Objective: To investigate the association between maternal anemia and low/insufficient birth weight.

Design: A prospective cohort study of pregnant women who underwent prenatal care at the healthcare units in a municipality of northeast Brazil together with their newborn infants was carried out. The pregnant women were classified as having anemia when the hemoglobin level was below 11 g/dl.