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#056 The Biology of Breast Milk

Aug 25, 2020 38m 21s 25 insights
<p>This episode aims to be the most comprehensive video compendium on the biology of breast milk ever recorded.</p> <p><strong>In this episode, you'll discover:</strong></p> <ul> <li><strong>(00:00)</strong> Introduction</li> <li><strong>(07:11)</strong> Breast milk production and composition</li> <li><strong>(09:59)</strong> Human milk oligosaccharides help establish the infant gut microbiome</li> <li><strong>(16:32)</strong> Omega-3s in breast milk boost brain development</li> <li><strong>(18:15)</strong> Vitamins and minerals in breast milk</li> <li><strong>(22:05)</strong> Breast milk stem cells and multi-organ microchimerism</li> <li><strong>(22:54)</strong> Harmful substances transferred to infants via breast milk</li> <li><strong>(28:05)</strong> Breastfeeding boosts the infant's immune system</li> <li><strong>(31:17)</strong> Effects on intelligence</li> <li><strong>(34:36)</strong> Breastfeeding as a benefit to maternal health</li> </ul> <p><span style="font-weight: 400;">If you're interested in learning more, you can read the <a href="https://www.foundmyfitness.com/episodes/breast-milk">full show notes here.</a></span></p> <p><span style="font-weight: 400;">Join over 300,000 people and get the latest distilled information on the biology of breast milk straight to your inbox weekly:</span> <span style="font-weight: 400;"><a href="https://www.foundmyfitness.com/newsletter">https://www.foundmyfitness.com/newsletter</a></span></p> <p><span style="font-weight: 400;">Become a FoundMyFitness premium member to get access to exclusive episodes, emails, live Q+A's with Rhonda and more:</span> <a href="https://www.foundmyfitness.com/crowdsponsor"><span style="font-weight: 400;">https://www.foundmyfitness.com/crowdsponsor</span></a></p>
Actionable Insights

1. Follow AAP Breastfeeding Guidelines

Exclusively breastfeed infants for the first six months, then continue breastfeeding while introducing age-appropriate foods until 12 months or longer, as recommended by the American Academy of Pediatrics.

2. Maternal High-Dose Vitamin D

Mothers can take a daily high-dose vitamin D supplement of 6,400 IUs to increase the vitamin D concentration in their breast milk, providing sufficient intake for their exclusively breastfed infant.

3. Administer Newborn Vitamin K1

Ensure all newborn infants receive an injection of vitamin K1 shortly after birth to prevent hemorrhaging, as breast milk is very low in this essential nutrient.

4. Introduce Iron-Rich Foods (6m)

Pediatricians recommend introducing iron-rich complementary foods by the age of six months, as breast milk is low in iron and infants’ iron stores can deplete by this time.

5. Avoid Smoking for Nutrient Transfer

Avoid maternal cigarette smoking as it impairs the uptake of critical nutrients like omega-3 fatty acids (DHA) and iodine into breast milk, which are essential for infant brain development and thyroid function.

6. Avoid Nicotine While Breastfeeding

Avoid nicotine as it transfers into breast milk at higher concentrations than maternal plasma and is eliminated much slower by infants, leading to harmful effects on infant health and sleep.

7. Avoid Marijuana While Breastfeeding

Avoid marijuana use while breastfeeding, especially during the first month of an infant’s life, as THC can be detectable in breast milk for days and is associated with decreased infant motor development.

8. Avoid Specific Drugs (Breastfeeding)

Absolutely avoid taking anti-cancer drugs, lithium, oral retinoids, high-dose iodine, amiodarone, and gold salts while breastfeeding due to potential risks to the infant.

9. Consult Doctor on Drug Safety

If you require prescription drugs, especially those with known risks, discuss with your healthcare provider whether breastfeeding is a safe option for your infant.

10. Mind Maternal Intake & Smoking

Be aware that substances you eat, drink, supplement, and especially smoke, can transfer into breast milk and potentially affect the infant.

11. Avoid Harmful Substance Exposure

Be aware that harmful substances, such as heavy metals like cadmium, can transfer from a mother’s blood into breast milk, potentially impairing infant nutrient metabolism and posing health risks.

12. Limit High Caffeine Intake

Limit extremely high caffeine intake (750 mg/day or more, equivalent to 6-8 cups of coffee) while breastfeeding, as infants metabolize caffeine poorly and could reach toxic concentrations.

13. Caution with Social Drugs

Exercise caution with social drugs like alcohol, nicotine, caffeine, and cannabis, as they can transfer into breast milk and carry risks to the infant.

14. Allow Alcohol Metabolism Time

Understand that alcohol metabolism occurs at a constant rate, so drinking water, exercising, or pumping and dumping will not speed up its elimination from breast milk; allow sufficient time for it to break down.

15. Match Expressed Milk Timing

When feeding expressed breast milk, provide it to the infant at the same time of day it was expressed to help maintain the infant’s circadian rhythm.

16. Ensure Maternal Micronutrient Intake

If a mother is undernourished or eats an unhealthy diet, her breast milk may lack essential micronutrients, so supplementation for the mother, infant, or both might be necessary.

17. Supplement DHA While Lactating

Lactating women can take a dietary supplement containing 400 milligrams of marine omega-3 fatty acid (DHA) to increase DHA levels in their breast milk, which is crucial for infant brain development.

18. Maintain Smoke-Free Household

Ensure a smoke-free household environment, as exposure to secondhand smoke can negatively influence breastfeeding duration and increase the likelihood of stopping breastfeeding early.

19. Breastfeed for Any Duration

Breastfeed for any length of time, even if not exclusively for six months, as it significantly reduces the risk of nonspecific gut infections in infants, with benefits lasting beyond cessation.

20. Consult Lactation Specialist Early

Consider working with a lactation consultant during the first few weeks of breastfeeding to address challenges like sore nipples, plugged ducts, or lack of support.

21. Consider Donor Milk Option

If a mother’s milk supply is insufficient or health concerns prevent breastfeeding, donor milk may be a viable option for healthy, full-term babies.

22. Access Premium Aliquot Content

Access curated content on pregnancy and child development by becoming a premium member of FoundMyFitness.

23. Get Full Aliquot Access

For full access to Aliquot episodes, including timelines and time codes for each topic, visit foundmyfitness.com/Aliquot.

24. Explore Aliquot Previews Online

Visit foundmyfitness.com/aliquot to find more aliquot episode previews and information about this new curated members content.

25. Access Breast Milk Resources

Find a fully referenced article on breast milk by visiting foundmyfitness.com and looking under the topics section, or watch the video at foundmyfitness.com/episodes.