I. The nutrition of meals during pregnancy should be balanced The meals during pregnancy should be diversified and nutrition should be balanced. The so-called balanced diet is to provide dietary standards and dietary formulas that meet health requirements, are nutritionally comprehensive and reasonably proportioned, and to make reasonable arrangements according to the actual situation of body weight. It is not right to have a body weight lower or higher than the amount that should be gained. Therefore, as a pregnant woman, she should avoid nutritional deficiencies in her diet and ensure that her body is in the best condition so that her blood can contain enough of all the nutrients needed for the fetus, but not too much. The mother’s need for nutrition increases during pregnancy due to the need for more nutrients for fetal blood circulation, development of fetal organs and skeletal births, growth of the placenta, and the increased workload of the mother’s own vital organs. That’s why nutritional problems become more prominent during pregnancy. Usually, our body needs protein, fatty carbohydrates, water, various vitamins, minerals and essential trace elements in order to complete various metabolic activities, and also requires more nutrition, as well as due to the increased workload of the mother’s own vital organs. That’s why the nutritional problems become more prominent during pregnancy. Normally, our body needs more than 40 nutrients such as proteins, fats, carbohydrates, water, various vitamins, minerals and essential trace elements, as well as dietary fiber, in order to complete various metabolic activities. There is no one food with so many nutrients, so the daily diet should be eaten mixed. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. Iodine – no need for deliberate iodine supplementation Iodine is widely present in the environment where people live, and excessive iodine intake can lead to a significant increase in the prevalence of hypothyroidism and autoimmune thyroiditis. Since iodine is already compulsory in our edible salt, a normal diet is sufficient to ensure that adequate amounts of iodine are provided without additional supplementation. The dose of calcium is just right. Calcium – no calcium supplementation is needed for a normal diet A reasonably balanced diet for the mother-to-be can basically meet her daily needs and there is usually no need to be overly stressed about calcium supplementation. The calcium stores in the mother-to-be’s body will also be replenished for the fetus at this time. In the second trimester, 1000mg of calcium is needed, and in the second trimester, 1200mg of calcium is needed. Drinking two glasses of milk (400-500ml) daily can basically meet the needs. Sometimes, cramps that occur during pregnancy are not entirely caused by calcium deficiency, as exertion, excitement, cold or fetal pressure may lead to cramps. If blind calcium supplementation leads to excess, it will inhibit the absorption of iron and zinc, etc. There will also be babies born without fontanelle or with premature closure of fontanelle. Folic acid – not the more the better Folic acid is a water-soluble vitamin that is effective in preventing neural tube abnormalities in newborns. In early pregnancy, folic acid deficiency can cause neural tube abnormalities and other congenital malformations and premature birth. Folic acid also plays an important role in hemoglobin synthesis and deficiency can cause megaloblastic anemia in the mother, but more folic acid is not better than more. Excessive intake of folic acid leads to an increased risk of certain progressive and unknown neurological damage.