Postpartum weight loss in Seoul, at a pace that fits new parenthood

A gentle approach to postpartum weight loss in Seoul

Postpartum weight loss in Seoul often comes with extra pressure, from social media to well-meaning comments. Medically, there is no deadline. Much of the weight gained in pregnancy is fluid, the baby and the placenta, and is lost in the first weeks. The remaining weight often takes many months to change, and that is normal.

At VEI Clinic, Dr. HyunSung Park, an internal medicine specialist, focuses on recovery first. We look at medical issues that are common after birth, such as thyroid changes, anemia and blood sugar problems after gestational diabetes, before building a realistic plan around sleep, feeding and your daily routine.

Every postpartum experience is different. A first baby, twins, a cesarean birth, a long labor or a difficult pregnancy each affect recovery. Some parents also gained weight because of nausea, bed rest or gestational diabetes treatment. We take that history into account rather than applying the same targets to everyone.

When to start

Most people should wait until after their postnatal check with their obstetrician, typically around six weeks after birth, and longer after a cesarean section or a complicated delivery. Gentle walking can usually begin earlier, but structured exercise and calorie reduction should be introduced gradually once you feel physically ready.

If you are breastfeeding, it is generally recommended to wait until milk supply is well established before cutting calories, and to aim for slow loss of around 0.5 kg per week or less. Severe calorie restriction can affect supply and energy levels.

If you are not breastfeeding, a slightly faster pace may be possible, but crash diets still tend to backfire when you are short of sleep. Small, sustainable changes made consistently over several months usually achieve more than drastic short-term efforts.

Breastfeeding and medicines

GLP-1 medicines such as semaglutide (Wegovy, Ozempic) and tirzepatide (Mounjaro) are not recommended while breastfeeding, because there is not enough safety information about their passage into breast milk. They should also not be used during pregnancy or when trying to conceive. Semaglutide is generally stopped at least two months before a planned pregnancy.

Tirzepatide can reduce the reliability of oral contraceptives during the first weeks and after dose increases, which matters if you want to avoid another pregnancy soon. Once you have finished breastfeeding and are not planning a pregnancy, GLP-1 medicines may be discussed if you meet medical criteria. Fat-dissolving injections and body contouring devices are also usually postponed until after breastfeeding.

What we check

Tiredness, low mood and difficulty losing weight after birth are not always just lack of sleep. A short set of tests can uncover treatable causes.

• Thyroid function: postpartum thyroiditis can cause an overactive phase followed by an underactive phase, affecting weight, energy and mood
• Complete blood count and iron studies: anemia is common after birth and causes fatigue
• Blood sugar and HbA1c: especially important after gestational diabetes, which raises later diabetes risk
• Vitamin D and other nutrients where relevant
• Body composition test to track fat and muscle rather than the scale alone

A gentle plan, and its limits

A typical plan focuses on regular, protein-rich meals that are easy to prepare, adequate fluids especially if breastfeeding, gradual return to walking and strength training, and protecting sleep where possible. Pelvic floor and abdominal separation (diastasis recti) may need assessment by a women's health physiotherapist before intense core exercise.

Many new parents find that planning matters more than willpower: preparing simple snacks in advance, keeping water nearby during feeds and walking with the stroller daily. We help you choose a few realistic habits rather than a long list of rules.

Please seek help promptly if you feel persistently low, anxious or unable to cope, or have thoughts of harming yourself or your baby; postnatal depression is common and treatable. Call 119 or go to an emergency room for heavy bleeding, chest pain, sudden breathlessness, a painful swollen leg, severe headache with vision changes, or high fever.