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Breastfeeding and Vitamin D - many studies


38+ VitaminDWiki pages with BREASTFED etc in the title

This list is automatically updated

Items found: 38
Title Modified
Breastfeeding Vitamin D loading dose of 300,000 IU is OK - UK govt. Dec 2023 04 Jan, 2024
Vitamin D levels of breastfeeding mothers and infants in 3 cities – Feb 2015 29 Aug, 2023
Breastfeeding and Vitamin D - many studies 29 Aug, 2023
Breastfed Infants need more than an daily average of 800 IU of Vitamin D – RCT June 2022 21 Jun, 2022
Need at least 6,000 IU of Vitamin D daily during pregnancy and breastfeeding (Wagner) – meta-analysis March 2022 15 Apr, 2022
Monthly 120,000 IU of Vitamin D while breastfeeding was good – RCT Jan 2022 11 Jan, 2022
Breastfeeding is almost always associated with infant vitamin D deficiency – Dec 2021 14 Dec, 2021
Need at least 6,000 IU daily while breastfeeding to eliminate Vitamin D deficiency – meta-analysis Oct 2021 01 Nov, 2021
400 IU of Vitamin D helped breastfed infants, need more – RCT Sept 2021 01 Sep, 2021
36X more likely for an infant to be low vitamin D if exclusively breastfed (Hong Kong) – March 2021 26 Jul, 2021
6,400 IU of Vitamin D is safe and effective during breastfeeding – RCT Dec, 2020 16 Dec, 2020
Breastfeeding a child without adding vitamin D increases risk of many food allergies (egg whites in this case) – Jan 2020 12 Jan, 2020
Omega-3 during pregnancy and breastfeeding is recommended – May 2019 23 May, 2019
Maternal vitamin D deficiency can trigger rickets in breastfed infants – review March 2013 03 Feb, 2019
Biochemical rickets non-existent if breastfeeding mother got 600,000 IU of vitamin D (3 dollars) – RCT Dec 2017 03 Mar, 2018
Breastfed infant bones not helped by 800 IU of Vitamin D (not enough) – RCT Dec 2017 12 Dec, 2017
Extended breastfeeding cut in half the risk of Multiple Sclerosis – July 2017 28 Nov, 2017
Mother got 100,000 IU of vitamin D monthly, breastfeeding infant got a little – RCT Aug 2016 13 Sep, 2017
Breastfeeding mothers and Vitamin D: supplement only themselves usually, 4 out of 10 used monthly rather than daily – Jan 2017 05 Aug, 2017
Severe childhood dental problems 2.4 X more likely if breastfed for more than two years (low vitamin D) – June 2017 02 Jul, 2017
Vitamin D required for breastfed infants – daily or monthly, infant or mother – Jan 2017 20 May, 2017
Breastfeeding mother getting 6400 IU of Vitamin D is similar to infant getting 400 IU – RCT Sept 2015 25 Jan, 2017
Breastfed infants 6 times more likely to deficient in Vitamin D and Iron – Aug 2015 20 Jun, 2016
Breastfed infants: 90 percent had less than 20 ng of vitamin D, formula-fed: 15 percent – May 2013 20 Jun, 2016
Breastfed child needs even more vitamin D supplementation after 1 year – Feb 2016 28 Feb, 2016
Breastfeeding exclusively may not be best strategy for bone health (if not add vitamin D) – Feb 2016 16 Feb, 2016
NutraIngredients.com Breastfeeding exclusively may not be best strategy for bone health (if not add vitamin D) - Feb 2016 16 Feb, 2016
Breastfed infants may get enough vitamin D (provided mom gets 6400 IU) - Oct 2015 07 Oct, 2015
400 IU vitamin D for breastfed - American Association of Pediatrics - Feb 2012 23 Sep, 2014
16% of exclusively breastfed infants so low on vitamin D that they had rickets – June 2010 28 Aug, 2014
Breastfed without vitamin D supplements – a problem for NZ infants Jan 2013 28 Aug, 2014
Breastfeeding with daily or monthly doses of vitamin D virtually the same – RCT Dec 2013 01 Feb, 2014
Breastfeeding with daily or monthly doses of vitamin D fairly similar – Dec 2013 14 Dec, 2013
6400 IU vitamin D is effective during breastfeeding – Oct 2010 14 Dec, 2013
Breastfed Infants in Iowa got very little vitamin D, especially if winter or dark skin – July 2013 05 Jul, 2013
Only about 10 percent of breastfed infants get even the minimum recommended vitamin D – April 2010 26 Jun, 2013
Breastfed infants in Germany with 250 IU of vitamin D got to 56ng – Sept 2010 04 Sep, 2012
Hypothesis – vitamin D links breastfeeding difficulties and depression – July 2011 19 Jul, 2011

10+ VitaminDWiki pages have LACTATION in the title

This list is automatically updated

Items found: 10

Bone Mineral Density decreases during breastfeeding, recovers 6 months later – Aug 2023

Bone Mineral Density During and After Lactation: A Comparison of African American and Caucasian Women
Calcif Tissue Int. 2023 Aug 28. doi: 10.1007/s00223-023-01125-9
Marilyn Augustine 1, Robert Boudreau 2, Jane A Cauley 2, Deborah Majchel 3, Nayana Nagaraj 4, Lauren S Roe 2, Poonam Sood 5, Andrew F Stewart 6, Mara J Horwitz 7

Image
During lactation, changes in maternal calcium metabolism are necessary to provide adequate calcium for newborn skeletal development. The calcium in milk is derived from the maternal skeleton through a process thought to be mediated by the actions of parathyroid hormone-related protein (PTHrP) in combination with decreased circulating estrogen concentrations. After weaning, bone lost during lactation is rapidly regained. Most studies of bone metabolism in lactating women have been performed in Caucasian subjects.
There are well-documented differences between African American (AA) and Caucasian (C) bone metabolism, including higher bone mineral density (BMD), lower risk of fracture, lower 25-hydroxyvitamin D (25(OH) D), and higher PTH in AA compared to C. In this prospective paired cohort study, BMD and markers of bone turnover were compared in self-identified AA and C mothers during lactation and after weaning. BMD decreased in both AA and C women during lactation, with similar decreases at the lumbar spine (LS) and greater bone loss in the C group at the femoral neck (FN) and total hip (TH), demonstrating that AA are not resistant to PTHrP during lactation. BMD recovery compared to the 2 week postpartum baseline was observed 6 months after weaning, though the C group did not have complete recovery at the FN. Increases in markers of bone formation and resorption during lactation were similar in AA and C. C-terminal telopeptide (CTX) decreased to 30% below post-pregnancy baseline in both groups 6 months after weaning, while procollagen type 1 N-terminal (P1NP) returned to baseline in the AA group and fell to below baseline in the C group. Further investigation is required to determine impacts on long term bone health for women who do not fully recover BMD before a subsequent pregnancy.
 Download the PDF from VitaminDWiki


Factoid: Colostrom (first 5 days) has 3X more vitamin D than breast milk

Starts at 1.2 IU/g in colostrum, decreases to 0.36 IU/g during the first 5 days post-partum Reference


Mothers need to take 4,000 to 6,400 IU Vitamin D daily (or 150,000 monthly) to provide adequate vitamin D during breastfeeding

Can maternal vitamin D supplementation significantly increase the vitamin D content in colostrum? - asked Perplexity AI Dec 2024
Yes, maternal vitamin D supplementation can significantly increase vitamin D content in breast milk, including colostrum.
Here's what the research shows:
Supplementation Effects
High-dose maternal vitamin D supplementation effectively increases breast milk vitamin D content through two main approaches:

  • Daily supplementation of 4000-6400 IU
  • Single monthly dose of 150,000 IU  1  5

Dose-Response Relationship
When mothers receive a single large dose (150,000 IU):

  • Breast milk vitamin D peaks at 40 ng/mL on day 1
  • Levels decline rapidly afterward  1

With daily supplementation (5000 IU):

  • Breast milk vitamin D reaches steady levels of 8 ng/mL by day 3
  • These levels maintain through day 28  1

Clinical Outcomes
Higher maternal supplementation leads to better infant outcomes:

  • Over 90% of infants whose mothers took vitamin D supplements while breastfeeding achieved adequate serum vitamin D levels  8
  • The final mean serum vitamin D in supplemented mothers' infants was 66.7 nmol/L,
    compared to 33.5 nmol/L in unsupplemented mothers' infants  8

Current Recommendations
Standard maternal supplementation of 400-600 IU per day is insufficient to meaningfully increase milk vitamin D content  2
. Higher doses of 4000-6400 IU daily are needed to achieve adequate vitamin D transfer through breast milk  3


The Hidden Secrets of Natural Milk - MidWestern Doctor - May 2025

 PDF


Why Is What We Feed Infants So Unhealthy? - MidWestern Doctor - March 2025

 PDF

  • The infant formula industry has almost 100 billion dollars in annual sales.
  • Infant formula is full of corn syrup and seed oils, which cause metabolic dysfunction and excessive weight gain.- due to an error in 1963 study
  • Before the introduction of infant formula, mothers would often supplement their children’s diets with animal milks. If raw, these milks can yield significant benefits to children, while in contrast, when pasteurized, they have many issues (e.g., they frequently create allergies).

Decreased breastfeeding increases childhood diseases - May 2025

The Impact of Switching from Breastfeeding to Infant Formula on Childhood Disease Risk
Perplexity AI Deep Research May 2025
Research consistently demonstrates that the transition from breastfeeding to infant formula is associated with increased risk of various childhood diseases and health conditions. This comprehensive report examines the evidence surrounding this relationship and explores the mechanisms that may explain these increased health risks.

Breastfeeding Protection Against Infectious Diseases

Breastfeeding provides significant protection against infectious diseases during infancy and early childhood. When this protection is interrupted by switching to formula feeding, children become more vulnerable to various infections.

Respiratory Infections

Studies show that infants who are not breastfed face substantially higher risks of respiratory infections. According to research, infants who were not being breastfed were 17 times more likely than those being exclusively breastfed to be admitted to hospital for pneumonia 11. This relative risk was even more dramatic for children under 3 months old, where it increased to 61 times higher risk 11.
When examining partial breastfeeding (mixed with formula), infants receiving both breast milk and formula at ages 1-2.9 months were still 2.9 times more likely to be admitted for pneumonia than exclusively breastfed babies 11. This indicates that while some breastfeeding is better than none, the introduction of formula significantly increases infection risk.

Gastrointestinal Infections 2.8X

Gastrointestinal infections show similar patterns of increased risk with formula introduction. A meta-analysis found that infants who were formula-fed or received a mixture of formula and human milk were 2.8 times more likely to develop gastrointestinal infections than exclusively breastfed infants 13. In the first year of life, the incidence of diarrheal illness among formula-fed infants was twice that of breastfed infants 4.
A study in Zambia found that early weaning (transitioning from breast milk to other foods) substantially increased diarrhea morbidity and mortality among children 7. The protection offered by breast milk against these infections appears to be dose-dependent, with continued breastfeeding associated with reduced risk of diarrhea-related health problems 7.

Otitis Media (Ear Infections) 1.5X

Ear infections are significantly more common among formula-fed infants. Research indicates that infants who are formula fed have a 50% higher risk of developing otitis media compared to exclusively breastfed babies 19. One study found that the percentage of children with any otitis media was 19% lower in breastfed compared with formula-fed infants, and episodes of prolonged otitis media (>10 days) were 80% lower in the breastfed group 4.

Overall Hospital Admissions 1.3 X to 1.5 X

Breast-feeding only (no formula) for at least 3 months substantially reduced hospital admissions for many infectious diseases in the first 6 months of life 2. This protective effect extended to respiratory infections (36% reduction), gastrointestinal infections (49% reduction), and overall infections (39% reduction) 2. Partial breastfeeding combined with formula also reduced hospitalizations, but with smaller protective effects, demonstrating a dose-response relationship between the amount of breastfeeding and infection protection 2.

Impact on Non-Infectious Health Outcomes

The switch from breastfeeding to formula also affects non-communicable diseases and health conditions, with effects potentially extending well beyond infancy.

Obesity and Metabolic Health 1.2 X

Formula feeding is associated with an increased risk of childhood obesity. A meta-analysis found that breastfeeding was a significant protective factor against obesity in children, with formula-fed children having a 22% higher risk of obesity compared to those who were breastfed 12. The analysis also revealed a dose-response relationship, where longer breastfeeding duration provided greater protection against obesity 12.
Children breastfed for 7 months or more showed the most significant reduction in obesity risk (21% lower), while those breastfed for less than 3 months had only about a 10% decrease in obesity risk compared to those never breastfed 12. This suggests that early switching to formula may increase obesity risk.

Diabetes Risk 1.6 X

Formula feeding in infancy has been linked to a 1.6-fold increased risk of type 2 diabetes compared to breastfeeding 13. This association persists even after accounting for potential confounders, suggesting a causal relationship between early infant feeding choices and later metabolic health 13.

Allergies and Asthma 1.4 X to 1.7 X

Mixed feeding methods appear to increase the risk of food allergies in early childhood. Research presented at the American Academy of Allergy, Asthma & Immunology found that infants fed through a combination of direct breastfeeding, pumped breast milk, and formula had a 57% higher chance of developing food allergy symptoms compared to exclusively breastfed infants 20.
For asthma, meta-analyses have found a 1.7-fold increased risk among formula-fed children with a family history of asthma or atopy, and a 1.4-fold increased risk among those without such family history, compared to children breastfed for at least 3 months 13.

Cancer Risk 1.2 X to 1.3 X

The switch to formula feeding may also impact cancer risk. Meta-analyses have identified a 30% higher risk of acute lymphoblastic leukemia among formula-fed children compared with children who were breastfed for at least 6 months 13. There was also a 20% higher risk of acute myeloid leukemia among formula-fed infants compared to those breastfed for more than 6 months 13.

SIDS Risk 1.6X to 2.1 X

Case-control studies suggest that formula feeding is associated with a 1.6 to 2.1-fold increased risk of Sudden Infant Death Syndrome (SIDS) compared to breastfeeding 13. These associations persisted after adjustment for sleeping position, maternal smoking, and socioeconomic status 13.

Mechanisms Behind Increased Disease Risk

Several biological mechanisms may explain why switching from breast milk to formula increases disease risk.

Microbiome Differences 1.7 X

Research has shown that formula-fed neonates have higher relative abundances of opportunistic pathogens such as Staphylococcus aureus, Staphylococcus epidermidis, Klebsiella pneumoniae, Klebsiella oxytoca, and Clostridioides difficile 8. The relative abundance of antibiotic resistance genes (ARGs) carried by gut bacteria was 69% higher in formula-receiving infants compared to exclusively human milk-fed infants 8.
Formula-fed infants also had significantly fewer beneficial bacteria, such as Bifidobacteria, which have potential health benefits 8. These microbiome differences may contribute to both short-term infectious disease risks and long-term health outcomes.

Immunological Protection

Breast milk contains numerous immune factors that formula cannot replicate. These include:

  1. Immunoglobulins: Plasma cells in the mother's body migrate to the mammary epithelium and produce IgA antibodies specific to antigens in the immediate environment, providing specific protection against pathogens in the mother's surroundings 13.
  2. Innate immune factors: Oligosaccharides in breast milk prevent attachment of common respiratory pathogens to respiratory epithelium, and glycoproteins prevent binding of intestinal pathogens 13.
  3. Bioactive substances: Breast milk contains bioactive substances like leptin and ghrelin, which can influence the proliferation and differentiation of the infant's adipocytes and potentially affect metabolic health 12.

When switching to formula, these protective factors are lost, leaving the infant more vulnerable to pathogens and potentially altering metabolic development.

Nutritional Composition Differences

Formula provides different levels of nutrients compared to breast milk. Formula feeding often provides higher levels of fat and protein than the baby's needs 12. Higher protein and fat intake in early childhood have been associated with adiposity and metabolic changes that may increase disease risk 12.

The Timing of Transition Matters

The research suggests that the timing of transition from breast milk to formula is important. The protective effects of breastfeeding appear to be dose-dependent, with longer durations providing greater protection.
For infectious diseases, giving breast milk without formula for at least 3 months substantially reduced hospital admissions in the first 6 months of life 2. However, beyond 6 months of age, there was no association between breastfeeding status at 3 months and hospitalization for infectious disease 2, suggesting that early infancy is a particularly vulnerable time when breastfeeding protection is most crucial.
For obesity prevention, breastfeeding for less than 3 months provided only minor protection, while breastfeeding for 7 months or more showed significantly higher protection 12. This indicates that early switching to formula may have more detrimental effects on long-term metabolic health.

Conclusion

The evidence strongly indicates that switching from breastfeeding to infant formula is indeed a risk factor for increased childhood diseases, both infectious and non-infectious. The transition appears to impact multiple body systems and can have both immediate and long-term health consequences.
The protective effects of breast milk appear to be dose-dependent, with exclusive breastfeeding offering the greatest protection, followed by mixed feeding, with exclusive formula feeding presenting the highest risks. For many conditions, the timing of the transition is also important, with earlier switches to formula associated with greater health risks.
These findings highlight the importance of supporting breastfeeding continuation where possible and minimizing early formula introduction to reduce disease risk in children. When formula must be introduced, maintaining some breastfeeding (mixed feeding) appears to offer more protection than complete weaning to formula, though it still increases risk compared to exclusive breastfeeding.
!!!!!!!Citations:

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VitaminDWiki - Pregnancy category contains

Attached files

ID Name Comment Uploaded Size Downloads
22595 Why Is What We Feed Infants So Unhealthy__CompressPdf.pdf admin 09 May, 2025 1.13 Mb 0
22594 Natural Milk - by A Midwestern Doctor_CompressPdf.pdf admin 09 May, 2025 348.53 Kb 1
20026 Lumbar BMD.jpg admin 29 Aug, 2023 41.39 Kb 269
20025 BMD after lactation_CompressPdf.pdf admin 29 Aug, 2023 606.45 Kb 167