Dietary behavior during pregnancy.

During pregnancy, maternal diet is a modifiable factor that impacts the birth outcome. Since the nutritional needs of a pregnant women vary during preconception, gestational and breastfeeding period, it is necessary to adapt the diet and lifestyle, optimally under the personalized nutrition guidance of a specialist. High quality research regarding diet during pregnancy remains challenging as nutritional concerns also vary according to religion, financial income, age and education of the pregnant woman, as well as specific traditions of each country, limited number of dietitians with special training in maternal nutrition.