How much weight should I gain during pregnancy? The birth of a healthy baby is the hope of every parent-to-be, and with the improvement of family economic conditions, everyone is paying more and more attention to nutrition during pregnancy and deliberately trying to add extra “nutrition” after pregnancy. However, this is a misconception, not the more you eat during pregnancy, the healthier the child will be. The increase in gestational diabetes and huge babies in the city may be a reflection of this situation. Weight gain during pregnancy is directly related to the nutrition during pregnancy. Excess nutrition and excessive weight gain increase the chance of diabetes, and the fetus, because of its excess weight, does not easily pass through the birth canal during delivery compared to a small fetus, and is prone to obstructed labor and injury; and with insufficient nutrition during pregnancy, the fetus also shows signs of relative nutritional deficiency, manifested as low birth weight, and these children have more health problems. So how much weight should be gained in the ninth month of pregnancy to be more appropriate? This question cannot be given a standard answer. It needs to be treated differently for people of different body types. In general, thin people can gain more weight, while fat people have to control their weight gain relatively more strictly. The distinction between fat and thin is medically expressed by body mass index (BMI), BMI = weight/height2 (weight divided by height squared), where weight is measured in kilograms and height in meters, and the normal value of BMI is 20-24 (kg/㎡). So to understand how much weight you need to gain during pregnancy, the first thing is to understand your pre-pregnancy BMI. 1, very thin body type (BMI less than 18), the entire pregnancy weight increase of 20kg is appropriate. 2, thin body type (BMI between 18-20), the entire pregnancy weight increase of 13-17kg is appropriate. 3, normal body type (BMI between 20-23), the weight increase of 12kg throughout pregnancy is normal. 4, obese body type (BMI greater than 23), the weight increase of 8-11kg throughout pregnancy, can use some of the body’s energy reserves. In case of twin or multiple pregnancies, your doctor should be consulted. Weight gain is related to the number of fetuses. Weight gain during pregnancy is not uniform. For a normal weight person, a weight gain of 1-2kg during the first trimester of pregnancy is more appropriate. A study in Denmark found that poor nutrition in the early stages of pregnancy is associated with a higher risk of diabetes and hypertension in the later years after birth. Therefore, if the early pregnancy reaction is heavy and affects eating, it is advisable to eat less and eat more, and eat more food that is beneficial to the child’s brain development. Protein, inorganic salts, vitamins and sugar are all essential ingredients for the development of the fetal brain, so pregnant women should diversify their food and should not abstain from eating too much. Many pregnant women after the pregnancy reaction stage, appetite improved and began to eat a lot, as if to make up for the shortage in the first period, which is also wrong, the fetal growth and development has its own rules, excess nutrition will only be absorbed by the mother, resulting in obesity. The best way to gain weight is to increase slowly and steadily. In the middle and late stages of pregnancy, it is appropriate to control the weight gain to about 0.5kg per week for a normal size person. Excessive weight gain or stagnant growth may indicate the existence of fetal growth lag, easy to deliver low-weight children, and these children are prone to a variety of diseases; too much weight gain or too fast during pregnancy, becoming a fat mother is not a good thing for the mother and the fetus, too much weight gain may indicate the existence of gestational diabetes, for the mother, too much weight gain, in the postpartum period is easy to For the mother, too much weight gain may indicate the presence of gestational diabetes, and for the fetus, too much weight gain too fast may lead to a huge fetus (birth weight greater than 4kg), which is less likely to pass through the birth canal during delivery, and the doctor may choose to deliver by caesarean section, which may lead to obstructed labor and birth injuries during delivery, and also to neonatal hypoglycemia after delivery. Therefore, it is not better to eat as much as possible during pregnancy, but rather to focus on the quality of your diet rather than the quantity. If necessary, it may be necessary to consult a dietitian to adjust the diet during pregnancy. Obese pregnant women are more likely to develop diabetes, hypertension, hyperemesis, and venous thrombosis complications during pregnancy, so it is best to lose weight if you are preparing to become pregnant. However, if pregnancy has been detected, weight loss is not advisable during pregnancy and weight gain should be controlled appropriately under the guidance of a dietitian.