Maternal Nutrition and Gestational Weight Gain Among Saudi Women: Riyadh Mother and Baby Follow Up Study (RAHMA Explore)

Maternal nutrition is one of the main determinants of healthy pregnancy outcomes. The aim of this study is to investigate maternal nutritional risks and their relationship with gestational weight gain (GWG) among Saudi women. Methods: This is a cross-sectional study conducted in the antenatal clinics of a university hospital. The FIGO Nutrition Checklist was used to investigate the nutritional habits of pregnant women attending their regular antenatal visits. The FIGO tool includes a brief food frequency questionnaire (FFQ) and total nutritional risk score (NRS). Data on other variables were collected, including participant demographics and obstetric history. Current weight and height were extracted from nursing notes of the current visit, and the pre-pregnancy weight was self-reported by participants. GWG was reported and participants were classified according to IOM Guidelines. All data were analyzed using SPSS (Version 30, release September 2024) and p < 0.05 was defined as statistically significant. Results: A total of 570 pregnant women participated in the study, of whom 96% had at least one nutritional risk. More than 90% of participants reported sufficient folic acid intake, normal hemoglobin level and adequate meat and poultry intake. Only 23.9% of participants had sufficient fish intake and 24.6% reported proper sun exposure. Additionally, 10% of participants scored poorly on the FFQ, while 30% were classified as high-risk based on NRS scale. Poor nutritional scores were not associated with any clinical or socioeconomical variables. According to IOM guidelines, 26.3% of the participants achieved adequate GWG, while 49.5% had inadequate GWG, and 24.2% exceeded recommended GWG. Inadequate GWG was most common among those with low pre-pregnancy BMI (60%), followed by overweight (43.2%) and obese (37%) women. Neither parity nor nutritional scores significantly influenced GWG. Conclusions: Although poor nutritional quality and high nutritional risk are relatively uncommon among Saudi women, the prevalence rates remain consistent across all sociodemographic groups. This suggests widespread, uniform patterns of suboptimal dietary habits within the community. While GWG was not affected by nutritional status or parity of the participants, nearly half of participants had inadequate GWG, particularly those with a low pre-pregnancy BMI.