Nutritional needs of pregnant women Pregnant women need to pay attention to a reasonable diet during pregnancy to meet the nutrients needed for the growth and development of the fetus, especially in the second and third trimesters of pregnancy. At this time, the daily dietary intake of pregnant women increases by approximately 300-500 calories compared to before pregnancy. Pregnant women need to supplement nutrients including protein, vitamins, minerals, etc. Protein Protein is an essential nutrient for pregnant women