Overactive let-down

Key takeaways

Overactive let-down belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Overactive let-down to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Overactive let-down from memory before moving on to harder problems.

Reference excerpt

Overactive let-down (OALD) is the forceful ejection of milk from the breast during breastfeeding. In some women it occurs only with the first let-down in a feeding, occasionally women may have multiple strong letdowns during a feeding. OALD can make breastfeeding difficult and can be the source of some breastfeeding complications. It may also be known as hyper milk-ejection. A woman may have OALD in addition to an oversupply of breastmilk. (Often called foremilk-hindmilk imbalance, hyperlactation syndrome, oversupply colic syndrome, and other near synonyms.) The physical or medical cause of an overactive let-down is still unknown. Whether mothers with OALD have a higher overall milk volume – or a strong reaction to the hormone oxytocin (which causes the let-down reflex) also remains to be seen.

Complications The forceful spray of milk can cause the baby to consume too much milk too quickly as well as to swallow air during the period of rapid swallowing following the let-down. The speed of the flow of milk into the mouth can cause the baby to react with reduced nursing times and aversion to nursing often described by mothers as "fussiness", "colicky", "dislikes nursing", or "is weaning". Some babies, especially those of approximately 2–4 months of age, become increasingly upset with the spray of milk which may increase their aversion to nursing to the point of refusing the breast (a nursing strike). Overactive let-down can be a part of a constellation of symptoms that make up oversupply syndrome or oversupply colic. Babies coping with OSS, gain weight quickly in the early months, even while nursing for short period. Some OSS babies sleep for surprisingly long periods of time and depth, possibly due to an over-full feeling, while others have very disturbed sleep, possibly due to gastrointestinal pain.

Treatment There are effective remedies for overactive let-down, and oversupply syndrome, however aggressive treatment should be watched carefully by someone familiar with the condition as the mother is at a higher risk for plugged ducts, mastitis and other breast infections. Overactive let-down can take a long time to control and can be frustrating for the mother and baby, but when controlled effectively a long and satisfying breastfeeding relationship is possible. Mothers with this condition are often given various incorrect rationales for their concerns such as "having weak milk", or "bad milk", it's "just colic", the baby will "grow out of it", or the child is "allergic to your milk", or a food in the mother's diet. There are no valid reasons to stop breastfeeding due to this condition. A strong letdown reflex often coincides with overactive milk production, engorgement, and problems with the sucking/breathing pattern of the baby. Remedies for Engorgement include:

Gentle breast massage from the chest wall toward the nipple area before nursing. Cool compresses for up to 20 minutes before nursing. Moist warmth for a few minutes before nursing may help the milk begin to flow. Avoid using warmth for more than a few minutes as the warmth can increase swelling and inflammation. When preparing to nurse, mothers should allow the initial letdown reflex to occur and then subside before beginning the nursing session. Or they may stop the nursing momentarily until that strong letdown reflex passes. This will allow the milk flow to normalize. For very young infants, it may help to hand express the initial milk flow. It can extend the nursing session which is preferable for young infants. Remedies for OALD include:

When nursing, listen carefully to the breathing and sucking pattern of the baby. If the pattern is interrupted and it sounds as if the baby is struggling to swallow, gently slip a finger in the baby's mouth and remove the nipple until the baby is able to swallow and breathe. Also, have a hand towel near during nursing. It can be easily tucked into the bra to absorb the overflow of milk when waiting for that letdown reflex to subside. Nurse early and often – at least 10 times per 24 hours. Don't skip feedings (even at night). Nurse on baby's cues ("on demand"). If baby is very sleepy: wake baby to nurse every 2–3 hours, allowing one longer stretch of 4–5 hours at night. Allow baby to finish the first breast before offering the other side. Switch sides only once baby pulls off or falls asleep. Don't limit baby's time at the breast. Pumping off milk should be done only with the guidance of an experienced breastfeeding counselor, as part of a unilateral ad lib protocol.

References

Maria Andrusiak Morland – http://overactiveletdown.com/ Archived 2013-06-15 at the Wayback Machine http://kellymom.com/bf/concerns/mother/engorgement/ Cynthia Sowash - breastfeeding mother of four. Andrusiak, Frances and Larose-Kuzenko, Michelle. The Effects of an Overactive Let-Down Reflex. Lactation Consultant Series, 1987. Benson, K.D. "Clinical Problem Solving," CERP session LLL of Illinois Area Conference. September 4, 1993, Chicago, Illinois, USA. Mohrbacher, Nancy and Stock, Julie. THE BREASTFEEDING ANSWER BOOK. La Leche League International, 1991.

Worked examples

Example 1 — a first encounter with Overactive let-down

Start with the simplest possible case. Write down what Overactive let-down claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Overactive let-down before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Overactive let-down ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Overactive let-down

In research: Overactive let-down appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Overactive let-down in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Overactive let-down is common in secondary-school and first-year university syllabi. It links to neighbouring topics Breastfeeding, so understanding it makes those chapters shorter.
In everyday life: Look for Overactive let-down outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Overactive let-down in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Overactive let-down means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Overactive let-down out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Overactive let-down in simple terms?

Overactive let-down (OALD) is the forceful ejection of milk from the breast during breastfeeding. In some women it occurs only with the first let-down in a feeding, occasionally women may have multiple strong letdowns during a feeding.

Why does Overactive let-down matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Overactive let-down?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Overactive let-down.