Last reviewed: September 2025
The best way to lose weight while breastfeeding is to consume at least 1,800 calories per day of nutrient-dense foods and aim for a gradual loss of about one pound per week, the safe pace recommended for weight loss in general. Breastfeeding burns 500 to 700 calories daily, according to the Centers for Disease Control and Prevention (CDC), so your body needs adequate fuel to maintain milk production. Losing weight too quickly can reduce milk supply and leave you fatigued.
How many calories should you eat to lose weight while breastfeeding?
The Academy of Nutrition and Dietetics recommends that breastfeeding women consume at least 1,800 calories daily to support milk production and safe weight loss. Falling below this threshold can compromise milk supply and maternal health. Your specific needs may vary; use a calorie calculator or consult a registered dietitian.
When can you start dieting after giving birth?
The CDC advises waiting at least six to eight weeks postpartum before actively trying to lose weight. Your body needs time to recover from delivery and establish a solid milk supply. Jumping into a calorie deficit too early can negatively impact milk volume and quality.
What types of exercise are safe while breastfeeding?
Start with gentle activities like walking, postpartum yoga, or swimming as soon as your healthcare provider clears you, typically around six to eight weeks. Gradually increase intensity over time. Most guidelines, including those from the American College of Obstetricians and Gynecologists, recommend 150 minutes of moderate aerobic activity per week for postpartum women.
Should you avoid keto or intermittent fasting while breastfeeding?
Yes. Very low-carb diets like keto can increase the risk of lactational ketoacidosis, a rare but serious condition. The National Institutes of Health LactMed database advises against ketogenic diets while nursing. Intermittent fasting, which involves cycles of eating and fasting, is also not recommended due to insufficient safety data and potential for nutrient deficiencies. Instead, eat three balanced meals plus snacks every three to four hours.
Are weight loss supplements safe while breastfeeding?
Most weight loss supplements, including shakes, teas, fat burners, and prescription weight loss medications, have not been adequately studied in lactating women and many can transfer into breast milk. In our team’s evaluation of several popular products marketed to nursing mothers, such as Java Burn and LeanBiome, we found no evidence of safety in this population. According to the FDA’s LactMed database, oral weight loss medications like semaglutide (Ozempic, Wegovy) have minimal data on transfer but their side effects (nausea, vomiting, diarrhea) can impair nutrient intake and milk supply. The consensus from major health organizations is to avoid all weight loss supplements and medications while breastfeeding, especially during the first year.
Does exclusive breastfeeding help with weight loss?
A 2019 study in the journal Obstetrics & Gynecology found that women who exclusively breastfed for at least three months lost about 3.2 more pounds at 12 months postpartum compared to those who did not. While the difference is modest, exclusive breastfeeding appears to support gradual weight loss. Regardless of feeding method, combining a balanced diet with regular exercise is most effective.
What should you eat for postpartum weight loss?
Focus on whole foods: fruits, vegetables, whole grains, lean proteins (chicken, fish, legumes, tofu), and healthy fats (avocado, nuts, olive oil). Eat protein at every meal to promote satiety. Drink 2 to 3 liters of water daily, and avoid sugary beverages. Thirst is often mistaken for hunger, so staying hydrated can prevent overeating.
FAQ
How long does it take to lose weight while breastfeeding?
Weight loss varies, but a safe pace is 1 pound per week. Many women lose their baby weight over four to six months with consistent diet and exercise.
Can you skip meals while breastfeeding?
No. Skipping meals can reduce milk supply and cause blood sugar drops. Eating regular meals and snacks is crucial.
Is walking enough exercise for postpartum weight loss?
Yes, brisk walking for 30 minutes most days is an excellent start. As you recover, you can add strength training and more vigorous cardio.
Do breastfeeding calories burn belly fat?
Spot reduction is not possible, but overall body fat loss happens with a calorie deficit. Breastfeeding can contribute to gradual fat loss throughout the body.
Should you take prenatal vitamins while trying to lose weight?
Yes. Continue your prenatal vitamin while breastfeeding regardless of weight loss efforts to ensure adequate micronutrient intake for you and your baby.
Disclosure: This article is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any diet or exercise program while breastfeeding. This content has not been vetted by any external medical organization. Product names (Java Burn, LeanBiome) are mentioned for illustrative purposes; we have no affiliate relationship with these brands.
