The Complete Guide to Weight Management During Pregnancy and Childbirth: Prevention of Postpartum Obesity, Benefits and Contraindications of Exercise During Pregnancy

Women are highly susceptible to fat accumulation after pregnancy and childbirth due to drastic changes in endocrine and metabolism. Postpartum weight gain exceeding the normal range by 20% to 50% is termed "postpartum obesity." This not only affects appearance but can also lead to weakness in the limbs, slow recovery of the reproductive organs, and even induce uterine retroversion, prolapse, or urinary incontinence. Preventing postpartum obesity requires a three-pronged approach: a balanced diet, avoiding excessive supplementation, consuming more fish, shrimp, and soy products, and strictly controlling sweets and fatty meats; regular exercise, with women who have given birth vaginally able to get out of bed 24 hours later and consistently performing gentle movements such as head lifting, leg raising, and arm stretching to prevent abdominal muscle relaxation; and breastfeeding, which promotes maternal metabolic circulation, reduces subcutaneous fat accumulation, and is a win-win choice for both mother and baby.

Weight gain during pregnancy should be assessed according to professional standards. For women with a normal pre-pregnancy BMI, a total weight gain of 11.5–16 kg is ideal; obese women should aim for 6–7 kg. Weight gain exceeding 15 kg during pregnancy should be considered high-risk. Misconceptions such as "the fatter the baby, the better" are extremely harmful, as excessive weight increases the risk of gestational diabetes and hypertension. Pregnant women should appropriately limit their fat intake, especially in the last trimester. Weight monitoring should be routine, with a gain of 1–1.5 kg in the first trimester and an increase of 300–400 grams per week thereafter.

Many people believe that pregnancy requires complete rest, even avoiding housework, which is extremely detrimental. In 2002, American gynecologists and obstetricians jointly issued a statement encouraging healthy pregnant women to exercise. Exercise during pregnancy offers numerous benefits: strengthening back muscles and reducing back pain; promoting the release of synovial fluid from joints and relieving discomfort caused by ligament laxity; accelerating blood flow and improving skin metabolism; enhancing intestinal peristalsis and preventing constipation during pregnancy; improving sleep quality and building physical reserves for childbirth. Numerous studies have confirmed that pregnant women who exercise regularly have a significantly lower cesarean section rate than those who do not.

What exercises are suitable during pregnancy? Jogging and swimming are the first choices because they have good cardiovascular benefits and a low risk of injury. Brisk walking and stationary cycling are also good options. If you had strength training before pregnancy, you can continue, but avoid heavy lifting and postures that may compress the abdomen. Yoga and body shaping exercises can help improve flexibility. Dance practice should avoid jumping and large turns. All exercises should follow the principle of gradual progression and be adjusted according to your body's real-time response.

What situations should be avoided? During the first trimester, strenuous strength training and sit-ups should be avoided, especially for women with a risk of miscarriage. Weightlifting reduces blood flow to the uterus and decreases oxygen supply to the fetus. Impact sports, contact sports (such as skiing, diving, horseback riding), and activities with a risk of falling are strictly prohibited. Cycling should be stopped after the sixth month of pregnancy to prevent falls. If any abnormal bleeding, abdominal pain, or dizziness occurs during exercise, stop immediately and seek medical attention.

Weight management during pregnancy and postpartum is a systematic process. It's crucial to avoid compromising nutritional intake for the sake of weight loss, and to avoid completely abandoning physical activity in the name of "pregnancy safety." Through a scientifically balanced diet and moderate exercise, women can not only ensure the healthy development of the fetus but also effectively prevent postpartum obesity, maintaining lifelong health and beauty.