The diet in the first trimester should be diversified, the amount is not necessarily large, but the nutritional components should be comprehensive. For patients with mild vomiting, a small amount of meals can be taken to avoid nutritional deficiency of pregnant women caused by pregnancy reaction, and supplementing enough B vitamins can help improve appetite. Diet should be light and easy to digest. Try to choose high-quality protein such as milk, fish and poultry. At the same time, we should pay attention to the intake of grain. Too little carbohydrate intake will lead to the accumulation of ketone bodies in pregnant women's blood due to excessive fat utilization. Studies have shown that if the fetus uses ketone bodies in amniotic fluid, it may have adverse effects on brain development. Eat more alkaline foods such as vegetables and fruits.
The diet in the second trimester should include 400-500g of cereals, 50g of beans and their products, meat, poultry, eggs, fish 100- 150g (optional), animal liver and blood (50- 100g, twice a week). Besides rice, some miscellaneous grains should also be selected. In addition, you can often eat foods rich in calcium such as kelp, shrimp skin and laver.
Fetal weight gain is the fastest in the third trimester, and a certain amount of nutrients such as calcium, iron and fat are stored in the fetus, so the intake of high-quality protein, calcium and iron should be increased in the diet in the third trimester. The daily dietary composition of cereals is still 400 ~ 500 grams; Meat, eggs and fish increased to150 ~ 200 g; Use animal liver or blood twice a week; The milk volume increased to 500 ml, and the rest were the same as in the second trimester. In addition, a small number of meals should be taken, and pregnant women with edema should control their salt intake.