What to Eat While Breastfeeding

Your body will make good milk on an imperfect diet. That’s the design. But a handful of nutrients are the exception — vitamin D, vitamin B12, iodine, thiamin, choline, and the omega-3 fat DHA all pass into your milk in direct proportion to your own intake and stores.¹²

So the honest answer to “what should I eat for my baby’s health?” is not eat perfectly. It’s: eat enough, eat varied, and deliberately cover the six nutrients your milk can’t protect on its own.

Everything below is the detail behind that sentence.

This article summarizes published research and professional guidelines. It isn’t medical advice, and infant nutrition is one area where a real clinician matters. Talk to your pediatrician and your OB or midwife about supplements before starting anything — especially vitamin D dosing, which differs depending on whether you supplement yourself or the baby.

The Short Answer

Priority	What to do	Why
Vitamin D	Give your baby 400 IU/day, starting in the first days of life — or take 6,400 IU/day yourself under clinician supervision	Milk vitamin D is low on a normal maternal diet; this is the one gap a good diet won’t close34
Vitamin B12	Non-negotiable if you eat vegan or mostly plant-based — supplement	Milk B12 tracks maternal status more tightly than any other nutrient15
Iodine	Use iodized salt; take a prenatal that contains iodine	Requirement rises to ~250 µg/day during lactation6
Omega-3 (DHA)	2–3 servings of low-mercury fish per week	Milk DHA is a near-direct readout of your fat intake72
Energy	~500 extra kcal/day above pre-pregnancy needs	The metabolic cost of producing milk8
Protein	~20 g/day above your baseline	Supports milk protein output8
Fluids	Drink to thirst — no more	Extra fluid beyond thirst does not increase supply9
Elimination diets	Don’t, unless a clinician directs it	No evidence they prevent allergy or eczema10

Why Your Milk Isn’t a Straight Copy of Your Plate

Think of your mammary gland as a bank with two very different account types.

Some nutrients sit in a protected account. The gland pulls them from your body stores and, if needed, from your bones and tissue — and it keeps milk concentrations steady almost regardless of what you ate this week. Calcium, iron, folate, zinc, and copper work this way.¹

Others sit in a checking account. There’s no reserve to draw on, so the balance in your milk is roughly whatever came in through your diet recently.

Lindsay Allen, PhD — a research nutritionist at the USDA Agricultural Research Service Western Human Nutrition Research Center at UC Davis, and one of the field’s central figures — formalized this split. She calls them Group I nutrients (responsive to maternal status and intake) and Group II nutrients (buffered).¹

The distinction matters enormously, because it tells you where your effort actually goes.

How much a deficient mother’s milk short-changes her infant

Allen’s team estimated what percentage of an infant’s recommended daily intake they would get from the milk of a deficient mother. The numbers are stark:¹

Nutrient	Group	% of infant’s recommended intake supplied by a deficient mother’s milk
Vitamin B12	I	16%
Riboflavin (B2)	I	53%
Choline	I	56%
Thiamin (B1)	I	60%
Vitamin B6	I	80%
Folate	II	Largely maintained regardless of maternal status

Read the B12 row again. An infant fed exclusively by a B12-deficient mother receives roughly one-sixth of what they need. That is not a rounding error — it’s the mechanism behind the neurological cases that show up in the pediatric literature.

Folate, by contrast, is the control condition. Maternal folate status can drop and milk folate holds. That’s Group II behavior, and it’s why “just eat well overall” is genuinely adequate advice for a large share of nutrients.

So the strategy is narrow and specific: stop optimizing everything, and cover Group I properly.

The Six That Matter Most

1. Vitamin D — the gap a perfect diet cannot close

This is the exception to almost every other rule in this article, and it deserves to go first.

Human milk from a mother with typical vitamin D status contains very little vitamin D — not enough to prevent deficiency or, in the worst cases, rickets. There is no whole-food diet that reliably fixes this. Consequently, the American Academy of Pediatrics recommends that all breastfed and partially breastfed infants receive 400 IU/day of supplemental vitamin D, beginning in the first few days of life and continuing until they’re weaned onto adequate fortified sources.³ The AAP reiterated this in its 2022 breastfeeding policy statement.¹¹

There is a second, less-known route. Bruce Hollis, PhD, and Carol Wagner, MD, at the Medical University of South Carolina ran a randomized trial comparing maternal supplementation with 6,400 IU/day against the standard approach of giving the infant 400 IU/day directly. Infants whose mothers took the high dose — and who received no drops themselves — ended up with 25(OH)D levels no different from directly supplemented infants, with no safety signal in the mothers.⁴

That’s a real option if you’d rather not fight a newborn with a dropper every morning. It is also a dose roughly sixteen times the standard adult recommendation, which is precisely why it belongs in a conversation with your clinician rather than in a shopping cart.

2. Vitamin B12 — the highest-stakes nutrient on the list

Milk B12 is the most maternally-dependent nutrient in the Group I set, and the consequences of getting it wrong land on a developing nervous system.

If you eat vegan, mostly plant-based, or had bariatric surgery, treat B12 supplementation as mandatory rather than optional. Prenatal vitamins generally continue to be appropriate through lactation, and most contain it.

Supplementation does move the needle. In a randomized, double-blind, placebo-controlled trial in Tanzania, Dan Wang and colleagues found that prenatal supplementation raised milk B12 concentrations by 34% at six weeks postpartum, while postnatal supplementation raised them by 16% at seven months.⁵ Both windows matter, and they matter at different times — prenatal loading covers the early weeks, ongoing intake covers the long haul.

Worth noting from that same trial: 73% of participants had milk B12 below the reference threshold at six weeks. Low milk B12 is not an exotic condition.

3. Iodine — quietly under-supplied in Western diets

Iodine drives thyroid hormone production, and thyroid hormone drives infant brain development. Requirements climb during lactation to roughly 250 µg/day, and a full-term infant needs about 15 µg/kg/day to maintain normal thyroid metabolism.⁶

The problem is that iodine intake in many high-income countries has quietly drifted downward — artisanal and sea salts are typically not iodized, and much of the salt in processed food isn’t either. A systematic review by Shuyi Liu and colleagues found breast milk iodine concentrations ranging from 18 to 1,153 µg/L across populations, with ≥100 µg/L emerging as a reasonable sufficiency marker.⁶ That’s a sixty-fold spread, and diet explains most of it.

Practical version: use iodized salt at home, keep dairy and eggs in the rotation, and check that your prenatal actually lists iodine — many don’t.

4. Thiamin — a small deficiency with a dramatic ceiling

Thiamin makes this list because it demonstrates the Group I mechanism more vividly than anything else.

In rural Cambodia, where thiamin-poor white rice dominates the diet, infantile beriberi remains a genuine cause of infant death. Kyly Whitfield, PhD, and colleagues ran a double-blind randomized trial giving lactating women thiamin-fortified fish sauce. Milk thiamin rose from 14.4 µg/dL in the control group to 20.7 µg/dL in the low-concentration group, and infant thiamin status rose accordingly.¹²

A condiment changed the milk. That’s how directly Group I nutrients pass through.

In a varied Western diet, frank thiamin deficiency is rare — whole grains, pork, legumes, and fortified foods cover it. The reason to know this: it’s the clearest proof that your milk isn’t insulated from your diet, and it’s a real risk if your intake is genuinely restricted for any reason.

5. Choline — under-consumed and under-discussed

Choline supports infant brain development and, like the B vitamins, appears in milk in amounts tied to maternal intake — an infant of a deficient mother gets roughly 56% of the recommended amount.¹ A recent meta-analysis mapped how milk choline concentration shifts across lactation stages, confirming it as an actively regulated but intake-sensitive component.¹³

Most people under-consume it because the richest sources are foods that spent two decades on the naughty list: egg yolks and liver, with soybeans, chicken, and cruciferous vegetables contributing meaningfully. Two eggs a day covers a large fraction of the requirement.

6. DHA — the nutrient your milk copies most literally

Milk fat composition is the most-studied maternal-diet effect in the entire literature, and it’s the clearest.

The updated systematic review by Iris Petersohn and colleagues at Wageningen University found maternal fish intake positively associated with milk ALA (r = 0.28–0.42), DHA (r = 0.24–0.46), and EPA (r = 0.25–0.28), with dietary polyunsaturated fats generally correlating with their milk concentrations — and saturated fat intake negatively associated with several milk fatty acids.²

The geographic data makes the same point. Pooling 78 studies across 41 countries and 4,163 milk samples, worldwide mean milk DHA was 0.37% of total fatty acids — but women with access to marine foods averaged 0.35% versus 0.25% for those without.⁷ Sheila Innis’s work at the University of British Columbia established the underlying mechanism: milk fatty acid profiles reflect both recent dietary intake and maternal adipose stores.¹⁴

Here’s where honesty is required, though.

Milk DHA tracking your diet is well established. DHA supplementation producing measurably smarter babies is not. Shweta Khandelwal and colleagues randomized 957 Indian women to 400 mg/day of algal DHA from ≤20 weeks gestation through six months postpartum. At 12 months, infant development quotient scores were 96.6 in the DHA group versus 97.1 in placebo — no significant difference.¹⁵

The observational data is friendlier. In the ALSPAC cohort, Joseph Hibbeln, MD, then at the US National Institute on Alcohol Abuse and Alcoholism, found that mothers eating less than 340 g of seafood per week during pregnancy had children at elevated risk of scoring in the lowest quartile for verbal IQ (OR 1.48 for no seafood at all), along with worse fine motor and prosocial outcomes. Their conclusion was blunt: the risks of losing those nutrients outweighed the risks of trace contaminants in 340 g of weekly seafood.¹⁶

Reasonable reading of both: eat the fish, don’t bank on the capsule. Two to three servings a week of salmon, sardines, trout, or anchovies — low-mercury, high-DHA — is the version of this advice with the most evidence behind it.

What Matters Less Than You’ve Been Told

Drinking more water does not increase your supply

This is the single most repeated piece of breastfeeding advice, and it does not hold up. A Cochrane review by Chizoma Ndikom and colleagues searched for randomized evidence that extra fluids increase milk production and found essentially none — one low-quality quasi-randomized study, which reported that advising women to drink extra fluids did not improve milk production.⁹

Their conclusion: there isn’t enough evidence to support fluid intake beyond what you physiologically need, and because the mechanism isn’t plausible, further trials may not even be a priority.

Lactation does raise your fluid needs. Thirst handles it. Keep water within reach when you feed, because you’ll be thirsty — but forcing gallons is chasing an effect that isn’t there.

Elimination diets do not prevent allergies

Cutting dairy, eggs, nuts, or soy “just in case” is common and, for allergy prevention, unsupported. The AAP clinical report by Frank Greer, MD, Scott Sicherer, MD, and Wesley Burks, MD, is explicit: current evidence does not support maternal dietary restriction during pregnancy or lactation for preventing atopic disease.¹⁰

The same report notes what does have evidence: exclusive breastfeeding for 3–4 months reduces eczema incidence in the first two years, any breastfeeding ≥3–4 months protects against early wheezing, and early introduction of peanut to the infant may prevent peanut allergy. The direction of useful intervention is the baby’s diet, not the removal of foods from yours.

If your baby has genuine symptoms — blood in stool, severe reflux, significant eczema — that’s a clinical conversation, not a self-directed elimination. Restricting a nursing mother’s diet without cause makes an already-hard nutritional job harder.

Your diet does not need to be clean

The macronutrient composition of your milk is remarkably stable across wildly different diets. A recent systematic review of maternal lifestyle factors affecting milk composition confirms that while diet, smoking, activity, and BMI all leave signatures, the fundamentals of milk quality are robust.¹⁷ Coffee is fine in moderation. Spicy food is fine. Eating imperfectly on four hours of sleep is fine.

The same skepticism applies to the “anti-inflammatory diet” framing that gets marketed to postpartum women — as we’ve covered in our breakdown of when anti-inflammatory nutrition actually helps, the evidence is far narrower than the marketing.

How Much to Eat

Kathryn Dewey, PhD, of UC Davis quantified the metabolic cost decades ago and the numbers have held up. Exclusive breastfeeding costs about 670 kcal/day. Allowing for gradual, healthy postpartum weight loss, the net increment is about 500 kcal/day above your pre-pregnancy needs.⁸

For protein, Dewey’s analysis puts the recommended increment at roughly 20 g/day above baseline once the protein cost of non-protein nitrogen in milk is accounted for — up from an older 15 g/day estimate.⁸ If you want the underlying framework for daily protein targets, our guide to protein for building muscle covers the per-kilogram math; add the lactation increment on top of whatever that gives you.

One reassuring finding from the same review: low protein intakes are unlikely to reduce milk volume, and in women with adequate fat reserves, a moderately negative energy balance is unlikely to impair lactation.⁸ Your body prioritizes the milk. The cost lands on you, which is exactly why eating enough is a maternal-health issue as much as an infant one.

If you track intake with SensAI, this is worth setting up deliberately — the app’s energy and protein targets are built around training load, not lactation, so the +500 kcal and +20 g need to be added to the picture rather than assumed. Tell the coach you’re breastfeeding and it can hold that as a standing constraint, but it’s a training tool, not a lactation calculator. Your clinician owns that number.

Losing Weight and Training While Breastfeeding

The fear that dieting or exercise will wreck your supply is one of the most persistent in postpartum life, and there is a direct randomized test of it.

Megan McCrory, PhD, and colleagues at UC Davis randomized exclusively breastfeeding women at 12 ± 4 weeks postpartum into three groups for 11 days: a 35% energy deficit by diet alone, a 35% net deficit by diet plus aerobic exercise, or control. Weight loss averaged 1.9 kg, 1.6 kg, and 0.2 kg respectively — roughly 1 kg/week in the intervention groups.¹⁸

Milk volume, milk composition, milk energy output, and infant weight showed no significant differences between groups.

The interesting result is what separated the two intervention arms. In the diet-only group, weight lost was 67% fat — meaning a third came from lean mass. In the diet-plus-exercise group, the loss was nearly 100% fat. The authors concluded that combining moderate deficit with aerobic exercise is preferable specifically because dieting alone costs you lean tissue.

That’s the same principle that governs body recomposition at any life stage, and it lines up with ACOG’s guidance that physical activity in the postpartum period is safe and should be resumed gradually after an uncomplicated delivery, with medical clearance guiding the timeline — particularly after cesarean or complications.¹⁹ If you’re returning to lifting, our beginner’s guide to strength training for women covers the movement patterns worth rebuilding first, and our post-workout nutrition guide covers how to refuel around sessions once you’re training again.

The practical difficulty is that “gradually” is doing a lot of work in that sentence, and no template program knows what week you’re in. This is the kind of constraint SensAI is built to hold — you tell the coach you’re twelve weeks postpartum and breastfeeding, and it ramps volume against that rather than against a generic return-to-training curve.

Two caveats worth stating plainly. The McCrory trial ran 11 days, not eleven months — it doesn’t license aggressive long-term restriction. And it was conducted at three months postpartum in women with established supply, not in the fragile early weeks.

The Recovery Problem Nobody Warns You About

Newborn sleep does something to your physiology that no training program accounts for.

Fragmented sleep, elevated resting heart rate, and suppressed heart rate variability are the normal postpartum pattern, and they will make every wearable you own tell you that you’re overtrained — because in a real sense you are. The mistake is reading those numbers against your pre-pregnancy baseline and concluding you’ve lost fitness.

You haven’t. You’ve changed baselines. Our breakdown of how sleep debt shows up in HRV data explains the mechanism and the timeline for recovery once sleep consolidates.

This is the specific case where an LLM-based coach beats a scoring algorithm. A readiness score has no way to know you’re eight weeks postpartum and feeding twice a night; it just sees a suppressed HRV trend and flags you red every morning. SensAI’s coach holds that context as a standing constraint and adjusts what it asks of you, rather than benchmarking you against a version of your body that no longer exists.

A Day That Covers the Bases

Not a meal plan — a checklist of what a covered day contains:

• Two eggs somewhere in the day (choline, B12, iodine, vitamin D)
• A fish serving 2–3× per week — salmon, sardines, trout, anchovies (DHA, EPA, iodine, vitamin D)
• Iodized salt on the counter instead of flaky sea salt
• A dairy or fortified alternative serving (iodine, B12, calcium)
• Protein at every meal, hitting baseline + ~20 g⁸
• A prenatal vitamin, continued through lactation — checked for iodine and B12
• Vitamin D drops for the baby, 400 IU/day — or 6,400 IU/day for you, clinician-directed³⁴
• Roughly 500 kcal more than your pre-pregnancy intake⁸
• Water when you’re thirsty, and no penalty when you’re not⁹

Reference values for what “adequate” actually looks like in milk have gotten much better recently — the multi-country MILQ study, led by Allen’s group, published the first robust reference values for B vitamins in human milk from healthy, well-nourished mother-infant pairs across four continents.²⁰ The field is finally measuring what it has been recommending.

Frequently Asked Questions

Does what I eat change my breast milk? For some nutrients, dramatically. Vitamin D, B12, iodine, thiamin, riboflavin, B6, choline, and the omega-3 fats all appear in milk in proportion to your intake and stores.¹² For others — folate, calcium, iron, zinc, copper — your body buffers milk concentrations from your own reserves, so your diet has far less effect on the milk and far more effect on you.¹

What’s the single most important thing to supplement while breastfeeding? Vitamin D, and it’s not close. Breast milk is low in vitamin D regardless of how well you eat, which is why the AAP recommends 400 IU/day for the infant starting in the first days of life.³ If you eat vegan or mostly plant-based, B12 is equally non-negotiable.¹⁵

Do I need to drink more water to make more milk? No. A Cochrane review found no good evidence that fluids beyond thirst increase milk production.⁹ Lactation raises your fluid needs and thirst covers them.

Should I cut dairy or nuts to prevent my baby’s allergies? No, not preventively. The AAP’s clinical report states that current evidence does not support maternal dietary restriction during pregnancy or lactation for preventing atopic disease.¹⁰ If your baby has actual symptoms, work with your pediatrician rather than eliminating on your own.

Can I diet or exercise while breastfeeding without losing my supply? A randomized trial found that an 11-day 35% energy deficit — with or without aerobic exercise — produced roughly 1 kg/week of weight loss with no significant change in milk volume, composition, or infant weight.¹⁸ Adding exercise meant nearly all the loss came from fat rather than lean mass. Get clearance from your provider first, don’t attempt it in the early weeks, and don’t extrapolate an 11-day study into a six-month crash diet.

How many extra calories do I need while breastfeeding? About 500 kcal/day above your pre-pregnancy needs — the full cost of exclusive breastfeeding is roughly 670 kcal/day, with the difference intended to come from gradual postpartum fat loss.⁸ Protein goes up by about 20 g/day.⁸

Is fish safe while breastfeeding? Low-mercury fish is not just safe — the ALSPAC cohort found that eating less than 340 g of seafood per week during pregnancy was associated with worse child neurodevelopmental outcomes, not better.¹⁶ Choose salmon, sardines, trout, and anchovies over the large predatory species.

Do omega-3 supplements make my baby smarter? The evidence doesn’t support that claim. A randomized trial of 957 women taking 400 mg/day of DHA through pregnancy and lactation found no difference in offspring development scores at 12 months.¹⁵ What’s well established is that milk DHA content tracks your intake.⁷² Eat the fish; treat capsules as insurance, not an upgrade.

Does caffeine or the occasional drink ruin breast milk? Moderate caffeine is compatible with breastfeeding, and the fundamentals of milk composition are robust to ordinary dietary variation.¹⁷ Alcohol timing relative to feeds is a conversation worth having with your pediatrician.

The Takeaway

The instinct to eat perfectly for your newborn is a good instinct pointed at the wrong target. Your milk already protects your baby from most of what an imperfect diet would otherwise cost them — and it does so by drawing on you.

The work that actually changes your baby’s outcome is narrow: cover vitamin D, B12, iodine, thiamin, choline, and DHA; eat enough calories and enough protein; and stop restricting foods for reasons the evidence doesn’t support.

Everything you save by not chasing the perfect diet, spend on sleeping. That one you can’t supplement.

When you’re ready to train again, the same logic applies to your program: the constraint isn’t your fitness, it’s your recovery capacity on broken sleep. That’s the problem SensAI was built for — a coach that reads your actual recovery data and asks for what your body can give this week, not what it could give last year.

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References

Footnotes

1. Allen LH. “B vitamins in breast milk: relative importance of maternal status and intake, and effects on infant status and function.” Advances in Nutrition. 2012;3(3):362-369. https://pubmed.ncbi.nlm.nih.gov/22585913/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

2. Petersohn I, Hellinga AH, van Lee L, Keukens N, Bont L, Hettinga KA, Feskens EJM, Brouwer-Brolsma EM. “Maternal diet and human milk composition: an updated systematic review.” Frontiers in Nutrition. 2024;10:1320560. https://pubmed.ncbi.nlm.nih.gov/38352250/ ↩ ↩² ↩³ ↩⁴ ↩⁵

3. Wagner CL, Greer FR; American Academy of Pediatrics Section on Breastfeeding and Committee on Nutrition. “Prevention of rickets and vitamin D deficiency in infants, children, and adolescents.” Pediatrics. 2008;122(5):1142-1152. https://pubmed.ncbi.nlm.nih.gov/18977996/ ↩ ↩² ↩³ ↩⁴

4. Hollis BW, Wagner CL, Howard CR, Ebeling M, Shary JR, Smith PG, Taylor SN, Morella K, Lawrence RA, Hulsey TC. “Maternal Versus Infant Vitamin D Supplementation During Lactation: A Randomized Controlled Trial.” Pediatrics. 2015;136(4):625-634. https://pubmed.ncbi.nlm.nih.gov/26416936/ ↩ ↩² ↩³

5. Wang D, Shahab-Ferdows S, Lweno ON, Hampel D, Method B, Yelverton CA, Nguyen CH, Aboud S, Allen LH, Fawzi WW. “The effects of prenatal and postnatal high-dose vitamin B-12 supplementation on human milk vitamin B-12: a randomized, double-blind, placebo-controlled trial in Tanzania.” American Journal of Clinical Nutrition. 2024;119(3):730-739. https://pubmed.ncbi.nlm.nih.gov/38432714/ ↩ ↩² ↩³

6. Liu S, Sharp A, Villanueva E, Ma ZF. “Breast Milk Iodine Concentration (BMIC) as a Biomarker of Iodine Status in Lactating Women and Children <2 Years of Age: A Systematic Review.” Nutrients. 2022;14(9):1691. https://pubmed.ncbi.nlm.nih.gov/35565659/ ↩ ↩² ↩³

7. Fu Y, Liu X, Zhou B, Jiang AC, Chai L. “An updated review of worldwide levels of docosahexaenoic and arachidonic acid in human breast milk by region.” Public Health Nutrition. 2016;19(15):2675-2687. https://pubmed.ncbi.nlm.nih.gov/27056340/ ↩ ↩² ↩³

8. Dewey KG. “Energy and protein requirements during lactation.” Annual Review of Nutrition. 1997;17:19-36. https://pubmed.ncbi.nlm.nih.gov/9240917/ ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹

9. Ndikom CM, Fawole B, Ilesanmi RE. “Extra fluids for breastfeeding mothers for increasing milk production.” Cochrane Database of Systematic Reviews. 2014;2014(6):CD008758. https://pubmed.ncbi.nlm.nih.gov/24916640/ ↩ ↩² ↩³ ↩⁴

10. Greer FR, Sicherer SH, Burks AW; Committee on Nutrition and Section on Allergy and Immunology. “The Effects of Early Nutritional Interventions on the Development of Atopic Disease in Infants and Children: The Role of Maternal Dietary Restriction, Breastfeeding, Hydrolyzed Formulas, and Timing of Introduction of Allergenic Complementary Foods.” Pediatrics. 2019;143(4):e20190281. https://pubmed.ncbi.nlm.nih.gov/30886111/ ↩ ↩² ↩³

11. Meek JY, Noble L; Section on Breastfeeding. “Policy Statement: Breastfeeding and the Use of Human Milk.” Pediatrics. 2022;150(1):e2022057988. https://pubmed.ncbi.nlm.nih.gov/35921640/ ↩

12. Whitfield KC, Karakochuk CD, Kroeun H, Hampel D, Sokhoing L, Chan BB, Borath M, Sophonneary P, McLean J, Talukder A, Lynd LD, Li-Chan EC, Kitts DD, Allen LH, Green TJ. “Perinatal Consumption of Thiamine-Fortified Fish Sauce in Rural Cambodia: A Randomized Clinical Trial.” JAMA Pediatrics. 2016;170(10):e162065. https://pubmed.ncbi.nlm.nih.gov/27532780/ ↩

13. Yang M, Zhou Y, Wu S, Aihemaitijiang S, Li H, Liu J. “Choline concentration and composition in human milk across lactation stages: a systematic review and meta-analysis.” Critical Reviews in Food Science and Nutrition. 2026;66(6):1203-1212. https://pubmed.ncbi.nlm.nih.gov/40913782/ ↩

14. Innis SM. “Impact of maternal diet on human milk composition and neurological development of infants.” American Journal of Clinical Nutrition. 2014;99(3):734S-741S. https://pubmed.ncbi.nlm.nih.gov/24500153/ ↩

15. Khandelwal S, Kondal D, Chaudhry M, Patil K, Swamy MK, Metgud D, Jogalekar S, Kamate M, Divan G, Gupta R, Prabhakaran D, Tandon N, Ramakrishnan U, Stein AD. “Effect of Maternal Docosahexaenoic Acid (DHA) Supplementation on Offspring Neurodevelopment at 12 Months in India: A Randomized Controlled Trial.” Nutrients. 2020;12(10):3041. https://pubmed.ncbi.nlm.nih.gov/33023067/ ↩ ↩²

16. Hibbeln JR, Davis JM, Steer C, Emmett P, Rogers I, Williams C, Golding J. “Maternal seafood consumption in pregnancy and neurodevelopmental outcomes in childhood (ALSPAC study): an observational cohort study.” The Lancet. 2007;369(9561):578-585. https://pubmed.ncbi.nlm.nih.gov/17307104/ ↩ ↩²

17. Favara G, Maugeri A, Barchitta M, Lanza E, Magnano San Lio R, Agodi A. “Maternal Lifestyle Factors Affecting Breast Milk Composition and Infant Health: A Systematic Review.” Nutrients. 2024;17(1):62. https://pubmed.ncbi.nlm.nih.gov/39796495/ ↩ ↩²

18. McCrory MA, Nommsen-Rivers LA, Molé PA, Lönnerdal B, Dewey KG. “Randomized trial of the short-term effects of dieting compared with dieting plus aerobic exercise on lactation performance.” American Journal of Clinical Nutrition. 1999;69(5):959-967. https://pubmed.ncbi.nlm.nih.gov/10232637/ ↩ ↩²

19. American College of Obstetricians and Gynecologists. “Physical Activity and Exercise During Pregnancy and the Postpartum Period: ACOG Committee Opinion, Number 804.” Obstetrics & Gynecology. 2020;135(4):e178-e188. https://pubmed.ncbi.nlm.nih.gov/32217980/ ↩

20. Allen LH, Shahab-Ferdows S, Moore SE, Peerson JM, Kac G, Figueiredo AC, Dror DK, Michaelsen KF, Islam MM, Nije F, Hampel D; MILQ Study Consortium. “Reference Values for B Vitamins in Human Milk: The Mothers, Infants and Lactation Quality (MILQ) Study.” Advances in Nutrition. 2025;16(Suppl 1):100500. https://pubmed.ncbi.nlm.nih.gov/41167833/ ↩