9 Foods To Avoid During Breastfeeding

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When nursing, you should consume a well-balanced diet comprising various healthy foods. However, you should also know about the foods to avoid when breastfeeding. According to the CDC, 83.2% of infants were reported to be breastfed at some point in time through their infancy. A healthy diet during nursing nourishes the mother and guarantees adequate lactation and nutrition to the infant.

Studies suggest that maternal nutritional conditions may have an impact on breast milk (1). Therefore, it’s important to know what foods and beverages you should restrict or avoid when nursing to ensure that nothing hazardous enters your baby’s system through breast milk.

Read on as we tell you which foods you should avoid or limit during breastfeeding.

Foods To Avoid Or Limit When Breastfeeding

1. Alcohol

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Experts recommend avoiding alcohol during breastfeeding as it hampers the let-down reflex and milk production by altering milk-producing hormones (2). Also, it can disrupt the baby’s sleep, make them irritable, and cause long-term issues, such as impaired cognitive development (3). However, these concerns arise when a mother consumes a large quantity of alcohol frequently.

Experts recommend nursing mothers consume alcohol in moderation, i.e., no more than one standard drink a day (3). Consuming alcohol in moderation may not affect the infant, especially if a mother waits for at least two hours after a drink to breastfeed the baby.
Waiting for two hours after alcohol intake is crucial as 30 to 60 minutes after a drink, the alcohol level in the milk is at its peak, and it lingers in the milk for up to two to three hours. Although experts recommend one standard drink, you may wonder about its volume.

Point to consider

You may express your breast milk before consuming alcohol so you don’t have to wait and can bottle-feed your baby whenever they need (25).

How much is one standard drink?

The measure for one standard drink varies from one country to another. For instance, in the US, one standard drink (or one alcoholic drink equivalent) is:

• 12oz. of regular beer
• 5oz. of wine
• 1.5oz. of distilled spirits

Try to keep the intake occasional and within the limit. A breastfeeding mother consuming large quantities of alcohol could expose her baby to long-term health issues, such as delayed motor development (4). Consuming alcohol without food increases alcohol’s effect on milk-producing hormones. Therefore, ensure you always consume alcohol with a food item.

2. Caffeine

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Caffeine is a natural stimulant commonly found in tea, coffee, and chocolate. Sports drinks, soft drinks, flavored water, energy drinks, and certain medications are some other products that may also contain caffeine. A nursing mother who eats or drinks a food/product containing caffeine can immediately pass this stimulant to her baby via breast milk (5).

Consumption of high amounts of caffeine can keep a baby awake and make them restless. However, a moderate intake is unlikely to cause any adverse effects in a healthy, full-term infant (6). Experts recommend nursing mothers consume no more than two to three cups of coffee (200 to 300mg of caffeine) per day (7). However, this recommendation may vary in some countries.

For instance, the NHS recommends nursing mothers limit their caffeine intake to less than 200mg per day (8). Some healthcare providers may suggest switching to decaf coffee while breastfeeding to reduce your total caffeine intake. Therefore, consulting your healthcare provider to decide on a safe intake quantity for you is essential.

Be watchful

Caffeine levels in breast milk peak one to two hours after consumption (6).

3. High-mercury fish

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Infants require several nutrients, such as lean protein and DHA (docosahexaenoic acid), for proper brain growth and development. Fish is a nutrient-rich food that can offer high-quality lean proteins and essential omega-3 fatty acids such as DHA and EPA (eicosapentaenoic acid). However, several fishes, such as bigeye tuna, swordfish, and mackerel, have high levels of mercury (9).

When a mother consumes high-mercury fish repeatedly, it harms her and her breastfeeding baby. According to the Centers for Disease Control and Prevention (CDC), mercury can affect an infant’s brain and nervous system development (10). Impaired nervous system development could lead to other issues, such as impaired motor skills and delay in speech development (11).

Therefore, experts advise lactating women to consume low-mercury fishes, such as canned tuna (skipjack), salmon, and sardine. The Food and Drug Administration (FDA) advises lactating mothers to eat eight to 12 ounces (two to three servings) of low-mercury seafood per week (9).

Image: Food and Drug Administration

4. Highly processed food

Eating a well-balanced diet containing various fresh, healthy foods is vital. However, several moms choose processed foods as they are conveniently available and are ready to eat. Highly processed foods, canned foods, and fast food, such as fries and donuts, are generally high-sodium foods and possess trans fats, sugar, and total calories.

Consuming highly processed foods exposes an individual to health risks such as obesity, type-2 diabetes, hypertension, and cardiovascular issues (12). Besides, it could alter breast milk’s quality, potentially affecting a breastfeeding infant’s health.

A recent study from the Keck School of Medicine of USC showed that fructose sugar found in processed foods could pass to babies via breast milk. Exposing a baby to excess refined sugar during infancy and early childhood may alter a baby’s food choices, exposing them to long-term health risks (13).

5. Herbs

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Herbs are aromatic plants that add flavor and aroma to a food. Besides, several of them are known to increase breast milk supply and treat certain breastfeeding problems, such as cracked nipples. Consuming herbs, especially as herbal supplements and teas, while breastfeeding requires caution due to the following reasons (14) (15).

• Herbs contain compounds that may have drug-like effects, passing into breast milk and affecting the baby.
• Clinical evidence corroborating several herbs’ safe and effective use in nursing mothers and infants is scarce.
• Herbal products may contain heavy metals and pesticides due to contamination.

Some herbs, such as arnica, seaweed, and St. John’s wort may adversely affect infants, and mothers should avoid them. A few other herbs that a mother should avoid due to their anti-lactogenic effects are peppermint, parsley, sage, jasmine, and chaste berry (16). If you wish to consume herbs during lactation, consult a lactation consultant or doctor first.

Below are some more foods that a nursing mother should avoid or limit.

6. Strongly flavored foods

Garlic, pickled foods, and spices, such as chili, are strongly flavored foods that can enter breast milk and may alter its taste (17). Babies sensitive to these changes may display irritability, fussiness, and reluctance to breastfeed.

A mother whose breastfeeding baby finds intensely flavored food in her diet irritating should consult a pediatrician or lactation consultant and discuss eliminating the food from the diet.

7. Allergenic foods

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Cow milk, fish, peanuts, shellfish, tree nuts, wheat, soy, and eggs, especially raw eggs are common allergenic foods. If your infant is allergic to any of these foods, you should avoid them (and their products) from your nursing diet.

Caitlin Houston, a mother of three daughters from Connecticut, writes in her blog, “All three of my daughters started showing symptoms of a dairy allergy at a very young age. Since my babies are exclusively breastfed, I do my best to avoid eating anything containing dairy ingredients. The baby’s dairy allergy symptoms include (but are not limited to) mucous in her stool, crazy newborn rashes, excessive spit-up, and painful gas (i).”

According to the American Academy of Pediatrics (AAP), two to three out of a hundred exclusively breastfed infants show an allergic reaction to these foods, mostly cow’s milk, in the mother’s diet (18). In such instances, experts recommend eliminating milk and dairy products from the mother’s diet during the lactation phase.

Experts say

According to Lila Luster-Stipe, RN, BSN, IBCLC, lactation consultant, West Jefferson Medical Center Family, maternal intake of dairy products may cause bloating, gas, and other colic-like symptoms in some neonates (26).

8. Gassy foods

Foods such as cabbage, broccoli, beans, Brussels sprouts, and cauliflower are often labeled as ‘gassy foods’ due to the potential to cause gastric troubles when consumed in large amounts. As a result, breastfeeding mothers are typically cautioned about consuming these gassy foods. Although the fibers and gas produced by these foods do not impact breast milk (19), they may cause gastrointestinal discomfort in sensitive infants (18). Thus, consuming these foods in moderation is advisable to prevent excessive gas and distress, which could potentially interfere with infant care.

9. Artificial sweeteners

The intake of artificial sweeteners during breastfeeding can impact both breast milk and the infant. While certain sweeteners like aspartame have been found not to affect breast milk, others such as sorbitol and fructose have been associated with a higher risk of diarrhea and increased infant body weight. Therefore, it is advisable to either avoid or restrict the consumption of artificial sweeteners while nursing (20).

How To Know If Your Diet Is Affecting Your Baby?

Avoiding alcohol, high-mercury fishes, and highly processed food, and limiting caffeine is the best choice for every breastfeeding mom. However, avoiding flavored, gassy, or allergenic foods depends on whether these foods are affecting your baby or not.
If a baby is sensitive to flavored or gassy foods, they are likely to exhibit the following signs and symptoms (19).

• Abdominal discomfort
• Gassiness, bloating, or colicky behavior
• Extreme fussiness and irritability
• Persistent crying
• Refusing to breastfeed

A baby with food sensitivity or food allergy is likely to show the following signs.

• Abdominal discomfort
• Excessive gas
• Fussiness and irritability
• Nausea or vomiting
• Diarrhea or constipation
• Red itchy spots on the skin (hives) or eczema
• Wheezing and coughing
• Nasal congestion
• Bloody stools

• Difficulty breathing
• Anaphylaxis – a rare and severe allergic reaction warranting immediate medical intervention

Nursing mothers should closely observe their baby’s reactions after each feeding session, as every baby is unique, and some may have adverse reactions to foods that others tolerate well. If you suspect that a particular food in your diet is causing discomfort to your baby, consult your pediatrician or lactation consultant and eliminate that food for the time being.

Infographic: Foods To Avoid Or Limit When Breastfeeding

When breastfeeding, it is recommended to avoid foods that may cause discomfort for the baby or affect the quality of your breast milk. The following infographic contains a list of food items you should avoid when lactating. Avoiding them can ensure that your baby continues receiving the nourishment they need.

Illustration: Momjunction Design Team

Discover crucial insights on foods to steer clear of while breastfeeding in this eye-opening video. Learn from real experiences and gain expert advice to ensure your and your baby’s well-being.

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Reviewer Author Editor Fact Checker

Dr. Priya ShashankIBCLC, BAMS, MHA, IYCF, CCE

Dr. Priya Shashank is a lactation consultant and childbirth educator, striving to bring about a change in the way childbirth and breastfeeding are perceived in India. She works with expecting couples to educate them about childbirth and the initial days with the baby, and helps new moms and babies settle down into breastfeeding routine comfortably.

Read full bio of Dr. Priya Shashank

Swati PatwalM.Sc. (Food & Nutrition), MBA

Swati Patwal is a clinical nutritionist, a Certified Diabetes Educator (CDE) and a toddler mom with more than a decade of experience in diverse fields of nutrition. She started her career as a CSR project coordinator for a healthy eating and active lifestyle project catering to school children.

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Rohit GarooBSc, MBA

Rohit Garoo is a writer-turned-editor with over 9 years of experience in content writing, editing, and content marketing. He did his bachelors in Science at St. Xavier's College, Hyderabad, and masters in Business Administration at Osmania University.

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Shinta Liz SunnyM.Tech

Shinta is a biotechnologist who is highly intrigued by science and technology. She holds a master's degree in Biotechnology from Karunya Institute of Technology and Sciences and a PG Diploma in cellular and molecular diagnostics from Manipal University.

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