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26妇女怀孕时应怎样保证合理营养妇女在怀孕期间，除了要保证本身所需要的营养以外，还必须满足胎儿生长发育的需要，因此对各种营养素的需要量都有所增加。怀孕的不同阶段，对营养素的要求有所不同。一般孕早期，也就是怀孕最初的3个月内，由于胚胎发育速度缓慢，母体子宫及有
26 How women should guarantee reasonable nutrition when they are pregnant Women need to meet the needs of their children during pregnancy, in addition to ensuring their own nutritional needs. Therefore, the demand for various nutrients has increased. Different stages of pregnancy, nutrient requirements are different. General early pregnancy, that is, within the first 3 months of pregnancy, due to the slow embryo development, the mother uterus and have