Dietary taboos in mid-pregnancy During pregnancy, a reasonable diet is crucial to the healthy development of the fetus. During the second trimester of pregnancy, dietary taboos mainly include the following aspects. First of all, pregnant women should avoid eating allergenic foods during the second trimester of pregnancy. Such as peanuts, seafood, eggs, etc. These are foods that are more likely to cause allergic reactions. Pregnant women should pay attention to carefully choosing the ingredients and eating small meals frequently.