Losing Weight After Having a Baby
There's no deadline. Here's what's realistic, what's safe while breastfeeding, and why "bouncing back" is a bad idea.
The short version
- Recovery comes first. Wait until you've been cleared, often around 6 weeks or more, before dieting on purpose.
- If you're breastfeeding, aim for slow loss, no more than about 1 pound a week, with enough to eat.
- Start with walking and pelvic floor work, then build up gradually.
- Feeling very low, anxious or hopeless is a medical issue, and it can be treated. Help is available.
What's realistic
You'll lose some weight right after birth, including the baby, placenta and fluid, and you'll keep losing fluid for about two weeks. Beyond that, it can take a year or more to lose what's left, and some people's bodies are permanently different afterward. Hips, skin and belly can change. That's normal, despite what social media shows you.
There's no timeline you need to hit. "Bouncing back" is a marketing phrase, not a medical goal.
When to start
- First 6 weeks or so: Focus on healing, sleeping when you can and eating enough. Don't diet. Gentle walking is usually fine as soon as you feel ready.
- After your checkup: Your clinician can tell you when you're ready for more exercise. Recovery from a C-section or a difficult birth takes longer.
- Once breastfeeding's established: Usually by about 6 to 8 weeks, you can begin to lose weight gradually.
If you're breastfeeding
Making milk uses about 330 to 400 extra calories a day, which helps some people lose weight, though not everyone does. It's common for weight to stay steady until breastfeeding slows.
- Go slowly. About 1 pound a week or less is generally considered safe, and shouldn't reduce your milk supply if you're eating well.
- Don't go too low. Very low-calorie diets, fasting and strict low-carb plans aren't good ideas at this stage. Watch your supply, and your baby's weight gain.
- Eat nutrient-dense foods. Protein, vegetables, fruit, whole grains, dairy or fortified alternatives, and low-mercury fish.
- Drink when you're thirsty.
- Keep taking prenatal or other vitamins, as your clinician suggests.
- Check before taking medications or supplements. That includes GLP-1 medications, since these haven't been established as safe during breastfeeding.
Eating when you've got no time
You may have a baby in one arm. Make it easy:
- Keep one-handed snacks within reach: cheese, nuts, bananas, boiled eggs, yogurt tubes, trail mix.
- Accept help. If people offer to bring food, ask for something with protein and vegetables.
- Use frozen vegetables, rotisserie chicken and microwave rice.
- Don't skip meals. Getting too hungry leads to grabbing whatever's nearby.
Returning to exercise
- Pelvic floor exercises and gentle core breathing. These can often start soon after birth, if you feel up to it.
- Walking. Start with short, flat walks. Bring your baby along.
- Gradually add strength work, once you're cleared.
- Hold off on high-impact exercise like running until you've rebuilt your strength, and often until at least 3 months or more.
Stop and see someone if you have heavy bleeding, pain, leaking urine, a feeling of pressure in your pelvis, or a bulge or "doming" along the middle of your belly. A pelvic floor physical therapist is a great resource for this. Leaking urine is common, but it's also treatable.
Sleep
You won't be getting much, and it may affect your hunger and cravings. Be easy on yourself. This phase passes, and you can pay more attention to weight when you're getting more rest.
Sources
This guide is general information, not medical advice. Please check with a clinician before making big changes, especially if you have a health condition, take medication, or are pregnant. Read the full disclaimer.
New guides by email
Plain-English guides, and what new research means for you, whenever there's something worth reading.