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Infant feeding

Infant feeding is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Infant feeding rather than just read about it. In short: Infant feeding is the practice of feeding infants. Breast milk provides the best nutrition when compared to infant formula.

Infant feeding — main illustration
Infant feeding — illustration

Key takeaways

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

Reference excerpt

Infant feeding is the practice of feeding infants. Breast milk provides the best nutrition when compared to infant formula. Infants are usually introduced to solid foods at around four to six months of age. Breastfeeding aids in preventing anemia, obesity, and sudden infant death syndrome, and promoting digestive health, immunity, intelligence, and dental development. The American Academy of Pediatrics recommends exclusively feeding an infant breast milk for the first six months of life and continuing for one year or longer as desired by infant and mother, and states that formula is an "acceptable substitute". During prehistoric times, breastfeeding infants was the only option for nutrition, such that the young would perish otherwise. Breastfeeding is rarely contraindicated, but is not recommended for mothers being treated for cancer, those with active tuberculosis, HIV, substance abuse, or leukemia. Clinicians can be consulted to determine what the best nutrition source is for each baby.

Infant nutrition requirements

Proper infant nutrition demands providing essential substances that support normal growth, functioning, development, and resistance to infections and diseases. Optimal nutrition can be achieved by the expectant mother making the decision to breastfeed or bottlefeed the infant before birth and preparing for chosen decision.

Birth to six months The World Health Organization (WHO) and the Pan American Health Organization currently recommend feeding infants only breast milk for the first six months of life. If the baby is being fed infant formula, the formula must be iron-enriched. An infant that receives exclusively breast milk for the first six months rarely needs additional vitamins or minerals. However, vitamins D and B12 may be needed if the breastfeeding mother does not have a proper intake of these vitamins. In fact, the American Academy of Pediatrics suggests all infants, breastfed or not, take a vitamin D supplement within the first days of life to prevent vitamin D deficiency or rickets. Exclusively breastfed infants will also require an iron supplement after four months, because the iron is not enough at this point from the breast milk.

Using formula Infant formula may be used instead of or in addition to breast milk due to lifestyle choices, low milk supply, or other issues that prevent breastfeeding. If a child has lactose intolerance, the parents could turn to soy-based or lactose-free formulas. It is important to know that some foods are restricted for infants; for example, whether breast- or bottle-fed, infants do not need additional fluids during the first four months of life. Excessive intake of extra fluids or supplements can have harmful effects. Fluids besides human breast milk or iron-enriched infant formula are not recommended. These substitutes, such as milk, juice, and water do not possess what the infant needs to grow and develop, cannot be digested correctly, and have a high risk of being contaminated. Water is acceptable only for mixing infant formula. Honey also must be avoided because there is a high risk of botulism.

Breastfeeding The frequency of breastfeeding varies among each mother–infant pair. Contributing factors are the age, weight, maturity, gastric capacity, and gastric emptying of the infant, as well as the mother's breast milk storage capacity. Typically, feedings occur eight to twelve times per day for breastfed infants. Early on, infants may not signal when they are hungry, so parents are taught to feed the infant every three hours during the day and every four hours during the night, even if waking the infant is required. The feedings will last 30–40 minutes in the beginning, or 15–20 minutes per breast if breastfeeding. As the infant matures, the feeding times shorten. Feeding often is important to promote normal growth and development, and maintain milk production in mothers who are breastfeeding.

Solid foods Solid foods should not be introduced until four to six months of age. This is delayed because the infant is not able to digest solid foods properly. Infants are born with a reflex to suck milk in, they do not have the ability to push food away. So, if solids are given, it is considered forced feeding.

Newborn Newborns typically consume half an ounce for the first 2 days after birth but will gradually increase to 1 or 3 ounces until 2 weeks after birth. They will begin to drink 2 to 3 ounces. One should expect to feed the baby every 8 to 12 times per day in a 24 hours span. Newborns will need to be fed throughout the night until their stomach can hold in more liquid and nutrition.

2 months Babies at 2 months of age will begin to drink 4 to 5 ounces every 3 to 4 hours.

4 months A 4 month old baby should drink 4-6 ounces every 4 hours.

6 months A 6 month old should drink 6-8 ounces every 4–5 hours.

Six to twelve months

Starting solids

Solid foods should be introduced from six months onward. Salt, sugar, processed meat, juices, and canned foods should be avoided. Breast milk or infant formula continues to be the primary source of nutrition during these months, in addition to solid foods. Solid food can be introduced during this age because the gastrointestinal tract has matured. Solids can be digested more easily, and allergic responses are less likely. The infant has begun teething by now, which will aid in chewing of solid food. Another milestone that the infant may have reached by now is properly supporting and turning its head; it may do this to express a dislike in certain foods. The infant has also developed enough to participate in feedings by grasping bottles and pieces of food to feed itself. When beginning solids, it is important that the infant start consuming iron-rich solids. Infants store iron from the womb, and, by 6 months of age, it has depleted from their body. Iron-fortified infant cereal has traditionally been the first solid introduced due to its high iron content. Cereals can be made of rice, barley, or oatmeal. However, there is increasing suggestion that iron-rich whole foods, such as meat and legumes, might be a better choice than iron-fortified processed foods such as manufactured rice cereals.

Health benefits of breast milk

… excerpt ends here. Continue reading the full article.

Illustrations

Infant feeding: Baby girl getting her first spoonful of rice
Baby girl getting her first spoonful of rice
Infant feeding: Foremilk (left) has a higher water content and a lower fat content to satisfy thirst. Hindmilk (right) has a lower water content and a higher fat content to satisfy hunger.
Foremilk (left) has a higher water content and a lower fat content to satisfy thirst. Hindmilk (right) has a lower water content and a higher fat content to satisfy hunger.
Infant feeding: Infant sleeping
Infant sleeping
Infant feeding: From Colostrum to Breastmilk. (Days after birth)
From Colostrum to Breastmilk. (Days after birth)
Infant feeding: Louis-Roland Trinquesse Young woman breastfeeding her child 1777
Louis-Roland Trinquesse Young woman breastfeeding her child 1777

Worked examples

Example 1 — a first encounter with Infant feeding

Start with the simplest possible case. Write down what Infant feeding 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 Infant feeding 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 Infant feeding 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 Infant feeding

In research
Infant feeding 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 Infant feeding 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
Infant feeding is common in secondary-school and first-year university syllabi. It links to neighbouring topics Breast milk, Breastfeeding, Infancy, so understanding it makes those chapters shorter.
In everyday life
Look for Infant feeding 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.

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How to study Infant feeding in 20 minutes

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

Frequently asked questions

What is Infant feeding in simple terms?

Infant feeding is the practice of feeding infants. Breast milk provides the best nutrition when compared to infant formula.

Why does Infant feeding 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 Infant feeding?

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 Infant feeding.

Tags

  • Breast milk
  • Breastfeeding
  • Infancy
  • Nutrition by type
  • Pediatrics

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