There are more mushroom foods in nature, such as enoki, mushroom, flat mushroom, apricot mushroom and shiitake mushroom. The shiitake mushroom is good for the fetus’ intellectual development. The shiitake mushroom is good for calcium, because the fetus and the mother need more calcium during pregnancy. Mushrooms are good for heart health and improve the immune system. Eating mushrooms is good for women in early pregnancy, but do not eat too much at once. Also, mushrooms should be cooked well before consumption, otherwise they may cause poisoning or gastrointestinal reactions, such as nausea, vomiting, abdominal pain, diarrhea and other symptoms.