Pregnant women in the second trimester should pay attention to a reasonable and balanced diet, otherwise it may cause malnutrition, which is harmful to the fetus and mother. Let's take a look at the hazards of malnutrition in the second trimester.1. Malnutrition can cause anemia in pregnant women. Anemia in pregnant women is harmful. It often causes premature delivery and increases neonatal mortality. In severe cases, infants’ livers lack iron reserves and are prone to anemia. Pregnant wome…