Level 1: The need for pregnant women to lose weight. During pregnancy, the body of pregnant women will undergo many changes, including weight gain. But excessive weight gain not only affects the health of the pregnant woman, it can also have a negative impact on the fetus. Therefore, it is very necessary for pregnant women to lose weight. Level 2: What should pregnant women pay attention to when losing weight? First of all, pregnant women should lose weight under the guidance of a doctor. Secondly, during the weight loss process, you should pay attention to nutritional balance and avoid excessive dieting or picky eaters. Also avoid strenuous exercise and overexertion. Level 3: Weight loss methods suitable for pregnant women. Weight loss methods suitable for pregnant women include diet and moderate exercise.