[Vegetarian and vegan diets among pregnant and breastfeeding women].

The prevalence of vegetarian and vegan diets among pregnant women in Denmark is rising. This paper reviews the maternal and neonatal outcomes associated with such diets, highlighting considerations for supplementation and potential risks, including B12-vitamin deficiency. Recommendations include early dietary assessment, B12-supplementation, and monitoring of key nutrients such as protein and iron. Despite potential challenges, with proper guidance and supplementation, vegetarian and vegan diets can be compatible with a healthy pregnancy and sufficient lactation.