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Is it okay to intermittent fast while breastfeeding?

The Intersection of Intermittent Fasting and Breastfeeding: A Delicate Balance
As the trend of intermittent fasting (IF) gains popularity, many new mothers are left wondering whether this dietary approach is compatible with breastfeeding. The question is not merely about weight loss; it delves into the health and well-being of both mother and child.
Expert Opinions on Safety
The consensus among health professionals is cautious. Registered dietitian Julia Armul emphasizes that intermittent fasting can pose risks during breastfeeding. She points out that this eating pattern restricts food and fluid intake, which are crucial for maintaining a mother’s milk supply and meeting her own nutritional needs. Breastfeeding requires a continuous source of calories and hydration, and any significant dietary changes could jeopardize this balance.
Moreover, experts warn that the demands of breastfeeding can make fasting particularly challenging. A mother’s body needs adequate nutrition to produce milk, and fasting could lead to feelings of lightheadedness or weakness, which are detrimental not only to her health but also to her ability to care for her baby.
Potential Benefits and Considerations
While some mothers may consider intermittent fasting as a strategy to shed postpartum weight, it is essential to approach this with caution. Some anecdotal reports suggest that with proper guidance and a focus on hydration, intermittent fasting can be managed safely. However, these experiences are not universally applicable, and what works for one individual may not be suitable for another.
Health professionals recommend that if a breastfeeding mother is considering intermittent fasting, she should consult with her healthcare provider first. This ensures that any fasting regimen is tailored to her specific health needs and circumstances.
Conclusion: A Personal Decision
Ultimately, the decision to engage in intermittent fasting while breastfeeding is deeply personal and should be made with careful consideration of both the mother’s and baby’s health. While some may find success with this approach, the potential risks highlight the importance of prioritizing nutrition and hydration during this critical period. As always, open communication with healthcare providers is key to navigating these choices safely.

What are the fasting guidelines for breast milk?

Most national guidelines recommend a “6-4-2” rule for preoperative fasting, meaning a minimum of 6-hour fast for solid food or formula, 4 hours for breast milk, and 2 hours for clear fluids.

Does skipping meals affect milk supply?

Your diet will not effect the quality, or volume, of your milk. Your milk is not made from the contents (or lack thereof) of your digestive system, though there are certain proteins (like cow’s milk protein for example) that do move from the food you ingest, into your breast milk.

Can you be in a calorie deficit when breastfeeding?

While nursing, you should not consume less than 1500-1800 calories per day, and most women should stay at the high end of this range. Some mothers will require much more than this, but studies show that going below this number may put supply at risk.

How much milk will break intermittent fasting?

​Having milk while fasting
Other than that you must avoid consuming milk or milk products at all costs. Even consuming 1/4th cup of milk can easily break the fast. That’s because dairy contains calories, natural sugar and carbs. One cup of milk contains 12 grams of carbs.

How can I lose weight fast while breastfeeding?

If you wish to lose weight while breastfeeding, both diet and physical activity have a role. Physical activity or exercise is the safest way to lose weight during this time. Moderate calorie restriction (eating less) may be safe for some overweight women, but breastfeeding women should generally eat more calories.

What is the 2 hour rule for breastfeeding?

Not drinking alcohol is the safest option for breastfeeding mothers. However, moderate alcohol consumption, meaning up to one standard drink in a day, is not known to be harmful to the infant. To be safest, the mother can wait at least 2 hours after a single drink before nursing.

How can I lose weight without affecting my milk supply?

If you are breastfeeding, you will want to lose weight slowly. Weight loss that happens too fast can make you produce less milk. Losing about a pound and a half (670 grams) a week should not affect your milk supply or your health.

Why am I gaining weight so fast while breastfeeding?

These results suggest that in the early postpartum period, well-nourished women increase energy intake and/or decrease physical activity to meet the energy demands of lactation, whereas beyond 3 months, lactating women are more likely to mobilize fat stores.

Does intermittent fasting affect breast milk supply?

Current research suggests that fasting doesn’t necessarily impact the macronutrients in breast milk. However, some micronutrients in breast milk may be “significantly” affected. In women fasting for Ramadan, one study showed that milk output stayed the same before and during fasting.

How long can you fast while breastfeeding?

Most religious fasts last for 24 hours, and while a 24-hour fast has been found to temporarily alter the biochemical composition of breast milk, there’s no harm to babies. (For the record, your breast milk changes day-to-day based on all sorts of factors, including your baby’s age and what you’re eating.)

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

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