Early pregnancy: you don't have to stick to a fixed three meals a day. Early pregnancy is the stage when the fetus splits from the fertilized egg, implants and even forms the human body. It is also the main stage of cell differentiation and organ formation, in which the most important organs of the human body are the brain and nervous system. During this period, if the intake of some nutrients is insufficient or excessive, it will affect the development of fetal organs and even lead to deformity.
Early pregnancy is the key period of embryo development, so it is best to provide enough high-quality protein in the diet, such as at least 40g per day and 70g of total protein, which can meet the needs of the mother and fetus. Because of the early pregnancy reaction, many pregnant women actually can't eat too much. Nausea usually occurs in the morning or at night. So it is not good to eat too little or too full, but it is best to eat less and eat more. Pregnant women don't have to stick to the fixed habit of three meals a day. Eat whatever you want and eat when you are hungry.
Second trimester: what is missing and what to make up; The second trimester is a period of rapid growth and development of the fetus, especially the development of the brain, which not only increases the weight, but also increases the number of brain cells rapidly, so the nutrients beneficial to brain development are the best.
The dietary principle in the second trimester is to make up for what is missing; How much is missing, how much to make up. For example, it can increase heat energy, ensure high-quality and sufficient protein, sufficient fat supply, sufficient inorganic salts and trace elements, and increase the intake of vitamins.
Third trimester: avoid taking too many calories. The third trimester is the fastest stage of fetal growth, and it is also the "sensitive period" for the proliferation of fetal brain cells and fat cells. To promote intellectual development, foods rich in protein, phospholipids and vitamins should be supplemented. The intake of fat and sugar foods should be limited to avoid excessive calories and large fetus, which will affect the delivery.
The intake of some fish, eggs and meat can be appropriately increased in the third trimester. Fish can be eaten 2~3 times a week, and eggs are also good, but it is best to eat 1 egg a day. It can also increase the intake of milk and supplement iron-containing foods. While supplementing iron, some vitamin C can also be added appropriately, which is more conducive to the absorption and utilization of iron. In addition, in the third trimester, pregnant mothers also need to control their weight, and they can also do some outdoor sports and exercise to prepare for natural delivery.