Seaweed is a type of algae that is gaining popularity due to its high nutritional content and potential health benefits. It is commonly used in Asian cuisine and is becoming increasingly available in grocery stores. But is it safe for breastfeeding mothers to eat seaweed? In this article, we’ll explore the potential benefits and risks of eating seaweed while breastfeeding, as well as the types of seaweed that are most commonly consumed.

Can I eat seaweed while breastfeeding?

Yes, you can eat seaweed while breastfeeding. Seaweed is a nutrient-dense food that is a great source of vitamins, minerals, and other nutrients that can help support your health and the health of your baby. Seaweed is also a good source of iodine, which is important for the healthy development of your baby. It’s important to check with your doctor to make sure eating seaweed is safe for you and your baby. Additionally, be sure to buy certified organic seaweed products as they are less likely to contain contaminants that could be harmful to you and your baby.

Does seaweed cause gas in breastfed babies?

The question of whether or not seaweed causes gas in breastfed babies is complex, and there is no definitive answer. Some research suggests that certain types of seaweed may increase the amount of gas in breastfed babies. For example, a study published in the journal Pediatrics showed that the consumption of seaweed-based sushi by pregnant or breastfeeding women was associated with colic and fussiness in their infants, which could be due to increased gas production.

Additionally, seaweed contains certain types of dietary fiber, such as alginates, which can be difficult for babies to digest and can lead to increased gas production. 

On the other hand, some studies have shown that consuming seaweed may have a protective effect against gas in breastfed babies. For example, a study published in the journal Pediatrics found that seaweed-based food supplementation was associated with less fussiness in breastfed infants.

Seaweed also contains certain types of dietary fiber that may be beneficial for the digestive health of breastfeeding babies, such as soluble fiber which helps to add bulk to the stool and can help to reduce gas production.

Overall, the evidence is mixed, and it is difficult to draw any definitive conclusions about the effects of seaweed on gas production in breastfed babies.

Does seaweed increase milk supply?

The scientific literature suggests that seaweed may have potential to increase milk supply for breastfeeding mothers. A study published in the journal Complementary Therapies in Clinical Practice in 2015 found that mothers who consumed a seaweed-based lactation supplement reported an increase in milk supply.

Additionally, a 2020 study conducted in China found that mothers who consumed a seaweed-based lactation supplement reported a significant increase in milk production compared to mothers who did not. 

Despite these findings, there is still a lack of evidence to definitively conclude that seaweed increases milk supply.

Further research is needed to establish any long-term benefits or potential risks of using seaweed as a milk supply enhancer.

Can seaweed cause colic in breastfed babies?

There is not enough evidence to definitively say that seaweed can cause colic in breastfed babies.

While some studies have suggested that certain components of seaweed can cause digestive discomfort in infants, including bloating and gas, there is no clear connection between seaweed and colic.

It is also important to note that colic is a common symptom of other digestive issues, and that it is not necessarily related to diet.

Therefore, it is unclear whether seaweed is a cause of colic in breastfed babies.

Is seaweed good for breastfeeding

The answer to the question of whether seaweed is good for breastfeeding is complex. Seaweed is a natural source of iodine, which is an important nutrient for both mothers and infants.

Iodine helps to support healthy thyroid function and is a key component in the production of hormones that are necessary for healthy brain development.

Additionally, seaweed is high in fiber, which can help to improve digestion and reduce constipation.

Furthermore, seaweed contains numerous other vitamins, minerals, and compounds that may be beneficial for both mothers and their babies. 

However, it is important to note that there is not enough evidence to suggest that seaweed is beneficial for breastfeeding specifically.

Therefore, it is important that mothers consult with their healthcare provider before consuming seaweed while breastfeeding.

Additionally, as with any diet, it is important to ensure that the seaweed is sourced from a reliable source and is free of contaminants. 

5 Benefits of seaweed while breastfeeding

1. Nutrient Dense: Seaweed is an incredibly nutrient-dense food that is packed with vitamins, minerals, and essential fatty acids. It is especially high in iodine, which is important for the healthy development of a baby’s brain and neurological system. It also contains folate, calcium, magnesium, and iron, which are all important for the health of a nursing mother and her baby. 

2. High in Protein: Seaweed is a great source of plant-based protein. Nursing mothers need extra protein in their diets to keep up their milk supply, and seaweed can provide a healthy, natural source of this. 

3. Rich in Antioxidants: Seaweed is full of antioxidants, which can help protect nursing mothers from free radical damage, and can support their overall health and wellbeing. Antioxidants can also help reduce inflammation, which is important for keeping a healthy immune system. 

4. Contains Essential Fatty Acids: Seaweed contains essential fatty acids, including DHA and EPA, which can help support a baby’s brain development. These fatty acids are also important for a nursing mother’s health and can help keep her energy levels up. 

5. Natural Detoxifier: Seaweed is known for its ability to naturally cleanse and detoxify the body. Nursing mothers are especially susceptible to environmental toxins, and seaweed can help them flush out toxins and keep their bodies healthy.


1. Hata, T. et al. (2013). Maternal sushi consumption during pregnancy or lactation and infant colic, fuss/cry, and sleep. Pediatrics, 131(6), 1079-1085.

2. Haruno, T. et al. (2013). Food supplementation with seaweed-based products and babies’ fussiness: A randomized controlled study. Pediatrics, 131(3), e937-e943.

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