Differences in Micronutrient Knowledge, Beliefs, and Supplementation Practices Between Pregnant Women and Healthcare...

Adequate micronutrient intake during pregnancy is critical for fetal development, yet whether pregnant women and healthcare professionals share consistent knowledge, beliefs, and supplementation practices remains poorly characterized.

Two parallel cross-sectional surveys using identical core items were conducted at a German tertiary care center between April and November 2024. Pregnant women (n = 132) and healthcare professionals who initiated the survey (n = 105) completed anonymous QR-code-based questionnaires assessing micronutrient-related knowledge, perceived dietary adequacy, and supplementation practices or recommendation patterns. Comparative analyses were restricted to fully completed healthcare professional questionnaires (n = 80). Group differences were analyzed using chi-square or Fisher's exact tests.

Healthcare professionals demonstrated higher knowledge levels across most micronutrients. Knowledge gaps were most pronounced for vitamin B12, with 53.0% of pregnant women unable to identify any fetal effect compared with 20.0% of providers (p < 0.001). Beliefs about dietary sufficiency were broadly aligned for folic acid (p = 0.452) and vitamin D (p > 0.999), but diverged markedly for vitamin B12, where 79.2% of providers considered dietary intake alone adequate compared with 47.3% of pregnant women (p < 0.001). Substantial differences were observed between patient-reported supplementation practices and provider-reported recommendation patterns: Vitamin B12 (70.0% vs. 3.8%), vitamin D (76.2% vs. 41.3%), omega-3 fatty acids (76.2% vs. 47.5%), and folic acid (98.5% vs. 81.3%; all p < 0.001). The internet was the most frequently cited information source among pregnant women (89.4%), while healthcare professionals reported using both scientific literature (75.0%) and internet-based resources (76.3%), the latter primarily for accessing professional and scientific information.

Substantial patient-provider differences in micronutrient knowledge, beliefs, and supplementation practices persist even within a highly educated population at a tertiary care center. These findings suggest potential differences between patient-reported supplementation behavior and provider-reported recommendation practices, particularly for vitamin B12 and vitamin D. These findings suggest that more structured communication regarding micronutrient supplementation during pregnancy is needed.