Baby-led weaning

From Wikipedia, the free encyclopedia - View original article

 
Jump to: navigation, search
BLW redirects here. For the locomotive builder, see Baldwin Locomotive Works.

Baby-led weaning (often also referred to as BLW) is a method of adding complementary foods to a baby's diet of breastmilk or formula. A method of food progression, BLW facilitates the development of age appropriate oral motor control while maintain eating as a positive, interactive experience. Baby-led weaning allows babies to control their solid food consumption by "self-feeding" from the very beginning of their experiences with food. The term weaning should not be taken to imply giving up formula or breastmilk, but simply the introduction of foods other than formula or breastmilk.

Oral Motor Skill Development From infancy, the only oral motor pattern appreciated is suck-swallow-breathe. This reflexive way of eating allows infants to feed from birth (from a breast or bottle) while protecting their airway and meeting their nutritional needs (Case-Smith & Humphry, in Case-Smith, 2005). The oral motor patterns required for eating and swallowing solids include tongue lateralization, tongue elevation, and munching/chewing, and unlike the suck-swallow-breathe sequence, coordination of these oral motor patterns is learned, not reflexive (Morris & Dunn Klein, 2000). When an infant is offered a spoon of puree, the practiced or familiar oral motor pattern is sucking. As purees are thicker than formula or breastmilk, puree is sucked off of a presented spoon and moved in the mouth in a similar fashion as liquid. Infants frequently cough and gag, as they are unable to manage the food in their mouth. The coughing and choking can be uncomfortable for some infants (Rappaport, personal communication 2013). This is generally looked at as a part of the process of introducing solid foods and parents are often encouraged to push past this. Conversely, current research supports that early negative experiences with eating leads to poor food acceptance in later years (Courtland, Harris, & Emmett,2009). Through playful exploration, BLW provides an opportunity for infants to practice new oral motor patterns. Through this method, infants gradually develop the oral motor patterns required for mature bolus manipulation, chewing, and swallowing, as well as allow the infant to be in charge of what goes in their mouth, how it goes in, and when. (Case-Smith, 2005, Rapley & Murkett, 2008).

BLW Infants are offered a range of foods to provide a balanced diet from around 6 months. They often begin by picking up and licking or sucking on the piece food, before progressing to eating. Babies are typically able to begin self-feeding at around 6 months old, although some are ready and will reach for food as early as 5 months and some will wait until 7 or 8 months. The intention of this process is that it is tailored to suit the individual baby and their personal development. The 6-month-old guideline provided by the World Health Organization is based on research indicating that the internal digestive system matures when the infant is 4–6 months old.

Initial self-feeding attempts often result in very little food ingested as the baby explores textures and tastes through play, but the baby will soon start to swallow and digest what is offered. Formula or breastfeeding is continued in conjunction with weaning and milk is always offered before solids in the first 12 months. Although breastfeeding is the nutritional ideal precursor to baby led weaning (as the baby has been exposed to different flavours [1] via its mother's breast milk and the jaw action used during breastfeeding helps the baby learn to chew), it is also entirely possible to introduce a formula-fed baby to solids using the BLW method. Formula-fed babies can successfully wean using BLW.[2] for the baby to get used to flavours and develop the ability to chew.

Providing an infant with table foods initiates the development of strong oral motor control for chewing and swallowing, including tongue lateralization and eventual bolus formation. When an infant mouths a food texture, the tongue lateralization reflex forces them to move their tongue to the side to lick and taste the food. Through continued practice, infants learn to volitionally lateralize their tongue—the first step in the development of a munching/chewing pattern (Case-Smith, 2005, Morris & Dunn Klein, 2000).

General information[edit]

Baby-led weaning (term attributed to Gill Rapley) places the emphasis on exploring taste, texture, color and smell as the baby sets their own pace for the meal, choosing which foods to concentrate on. Instead of the traditional method of spooning puréed food into the baby's mouth, the baby is presented with a plate of varied finger food from which to choose.

Contrary to popular belief, there is no research supporting the introduction of solids by purees, and proponents of baby-led weaning argue that babies can become very confused when lumpy foods are introduced at stage 2 of traditional weaning, unsure whether to swallow or chew.[3]

According to one theory, the baby will choose foods with the nutrients she might be slightly lacking, guided by taste.[4][5] The baby learns most effectively by watching and imitating others, and allowing her to eat the same food at the same time as the rest of the family contributes to a positive weaning experience. At six months of age babies learn to chew and grasp and this is therefore the ideal time to begin introducing finger food.

Self-feeding supports the child’s motor development on many vital areas, such as their hand-eye coordination and chewing. It encourages the child towards independence and often provides a stress-free alternative for meal times, for both the child and the parents. Some babies refuse to eat solids when offered with a spoon, but happily help themselves to finger food.

As recommended by the World Health Organization and several other health authorities across the world, there is no need to introduce solid food to a baby’s diet until after 6 months, and by then the child’s digestive system and their fine motor skills have developed enough to allow them to self-feed. Baby-led weaning takes advantage of the natural development stages of the child.

Signs of readiness[edit]

It is very important that baby-led weaning is not started before the child shows developmental signs indicating that they are ready to cope with solid foods. The baby should be able to sit upright, on a lap, in a highchair or unsupported, be eager to participate in mealtime and may even be trying to grab food and put it in their mouth. In “Ages and Stages,” the online information system powered by the AAP, readiness is defined as, “Once your baby can sit up and bring her hands or other objects to her mouth, you can give her finger foods to help her learn to feed herself” (AAP, 2013).

Safety[edit]

Many parents are used to the idea of giving babies puréed food and to some, giving such a young child finger food might sound dangerous. However, advocates of baby led weaning claim babies weaned using the baby-led method are actually less likely to choke on their food, as they are not capable of moving food from the front of the mouth to the back until they have learned to chew.[3]

Infants who participate in BLW do at times, gag and spit food out. Unlike traditional solid introduction (beginning with smooth purees), this gag response is not viewed as negative or uncomfortable for the infant. Due to immature oral motor patterns, when spoon fed, infants expect puree to move in the mouth like liquid. When a large bolus in sucked into the pharynx, this can lead to laryngeal penetration and/or aspiration of the bolus, which is uncomfortable and potentially frightening. When infants bring solid foods to their own mouth, they are the ones guiding the sensory experience, starting and stopping when they are comfortable and ready. When food does move too posteriorly in the mouth triggering a gag reflex, the entire bolus is expelled from the mouth. Also, food moves slowly in comparison to liquid, and is not often sucked into the pharynx, allowing for laryngeal penetration or aspiration of the bolus. The food bolus will trigger a gag response first and be expelled before it hits the laryngeal vestibule. Infants therefore utilize the gag reflex for learning three important concepts: the borders of their mouth, desensitizing their gag reflex, and how to protect their airway when volitionally swallowing solid foods (Rapley & Murkett, 2008).

As infants get closer to one year old, the gag reflex moves posteriorly, closer to the laryngeal vestibule. This allows food to move closer to the laryngeal vestibule before triggering a gag. Although this allows for increased ability to safely swallow, if oral skills are immature due to lack of practice, this puts older infants at a high risk for choking and aspiration of immaturely chewed food materials into the lungs (Morris & Dunn-Klein, 2000). Oral motor development would suggest that if an infant does not learn how to manage a bolus intra-orally and time their swallow, more choking would occur after the age of one, when traditionally more solid foods are added to the child’s diet (Morris & Dunn-Klein, 2000). There have been no clinical studies completed to support this connection between movement of the gag reflex and choking. It is still suggested to avoid classic “choking hazards” or airway shaped foods: whole grapes, coin-shaped slices of hotdogs, cherry tomatoes, etc. (Rapley & Murkett, 2008).

A distinction must also be drawn between coughing and expelling food and true “choking.” Choking by definition is a complete occlusion of the airway. According to the AAP (2010), “Choking is the blockage or hindrance of respiration by a foreign-body obstruction in the internal airway, including the pharynx, hypopharynx, and trachea.” The AAP explains that when a child is choking, there will be no sounds, as no air is able to pass through the airway.

The authors of BLW assert other strategies which are in line with traditional feeding safety guidelines. For example, it is recommended that infants are seated upright, in a supportive high chair for all feeding experiences. This reduces the impact of gravity on swallowing, allowing for easy expulsion of the bolus by gagging, decreasing accidental movement of the food into the pharynx. Additionally, a child who has the trunk and head control to sit independently though a meal (proximal stability) will more likely demonstrate adequate distal coordination for strong oral motor control (Case-Smith & Humphry, in Case-Smith, 2005).

Basic principles[edit]

The basic principles of baby-led weaning are:

Scientific Research[edit]

Very little scientific research has been done regarding baby-led weaning. However, a new study headed by child health specialist Charlotte M. Wright from the University of Glasgow, Scotland found that while BLW works for most babies, it could lead to nutritional problems for children who develop more slowly than others. Wright concluded "that it is more realistic to encourage infants to self-feed with solid finger food during family meals, but also give them spoon fed purees."[6]

Conversely, the natural diet of an infant up to age 1 is formula or breast milk. It is important for parents to not decrease the volume of milk feeds until around one year of age or until the baby is taking in enough solid foods to support weight-gain (AAP, 2013). Proponents of BLW would argue that breast-feeding mothers should change their own diet to improve the infant’s nutrition before pushing for increase solid food intake (Rapley & Murkett, 2008).

Historically, mothers used to be told to maintain a strict schedule for breast feeding, limiting the time at breast and the frequency. As a result, many mothers had low milk supply (as breast milk is a supply-demand phenomenon), and therefore their babies “failed to thrive.” Not surprisingly, the amount of formula available skyrocketed, as did the availability of strained or mashed “baby foods.” By the 1930s, a variety of Gerber purees were available for purchase. Current breast feeding recommendations advocate for an on-demand feeding schedule which should help keep a mother's milk supply adequate to nourish a baby through the first year of life (Rapley & Murkett, 2008).

A more recent study at the University of Nottingham by Ellen Townsend and Nicola J. Pitchford suggests that baby-led weaning may lead to less obesity in childhood. The authors conclude that the "results suggest that infants weaned through the baby-led approach learn to regulate their food intake in a manner, which leads to a lower BMI and a preference for healthy foods like carbohydrates.".[7] Feeding specialist, Kary Rappaport, OTR/L, SWC, CLE also concludes that a BLW infant, who leads their own food exploration and is exposed to a consistent variety of tastes, textures, and smells at an early age is more likely to develop positive interest in food. This may decrease “picky” eating behaviors in toddlers and young children. Picky eaters have food repertoires that generally consist of less healthy foods, and are often heavy in processed foods and sugars (Rappaport, personal communication, 2013).

Researcher Joel Voss, a neuroscientist at Northwestern University states, "The bottom line is, if you're not the one who's controlling your learning, you're not going to learn as well" (Davis, 2013). When and adult takes control of the activity, the inherent love of exploration and discovery is lost. BLW allows for natural, developmentally appropriate interaction and play with food, which has the potential to develop a lifelong curiosity with food.

See also[edit]

References[edit]

American Academy of Pediatrics (2013). Ages & Stages: feeding & nutrition. Accessed 10 October 2013. http://www.healthychildren.org/English/ages-stages/baby/feeding-nutrition/Pages/default.aspx.

Case-Smith, J & Humphry, R. (2005). Feeding Intervention. In J.Case-Smith (Ed.), Occupational therapy for children (pp. 481–520). St Louis, MO: Elsevier.

Davis, J. (2013, October 15). How a radical new teaching method could unleash a generation of geniuses. Wired: Business, . Retrieved from http://www.wired.com/business/2013/10/free-thinkers/.

Morris, S.E, & Dunn-Klein, M.(2000).Pre-feeding skills: A comprehensive resource for mealtime development (2nd ed.). Austin, TX: PRO-ED, Inc.

Rapley, G. & Murkett, T. (2005). Baby Led Weaning: the essential guide to introducing solid foods and helping your baby to grow up a happy and confident eater. New York, NY: The experiment, LLC.

Rappaport, K. (2013). Introducing solid foods. Personal communication, 15 October 2013.

Footnotes[edit]

  1. ^ Mennella JA, Jagnow CP, and Beauchamp GK, 2011, Prenatal and postnatal flavor learning by human infants. http://www.ncbi.nlm.nih.gov/pubmed/11389286
  2. ^ Susan A. Sullivan, Leann L. Birch 1994 http://pediatrics.aappublications.org/content/93/2/271.abstract
  3. ^ a b Rapley, G. 2006. Baby-led weaning, a developmental approach to the introduction of complementary foods. In Hall Moran, V and Dykes, F. eds. Maternal and Infant Nutrition and Nurture: Controversies and Challenges. Quay Books, London. pp 275-298.
  4. ^ Davis, Clara M. Results of the self-selection of diets by young children. Can Med Assoc J 1939 41: 257-61
  5. ^ Strauss, Stephen. Clara M. Davis and the wisdom of letting children choose their own diets. Can Med Assoc J 2006 175: 1199 http://www.cmaj.ca/cgi/content/full/175/10/1199
  6. ^ "Baby-Led Weaning Is Feasible but Could Cause Nutritional Problems for Minority of Infants" Science Daily. January 14, 2011. http://www.sciencedaily.com/releases/2011/01/110112081454.htm
  7. ^ "Baby knows best? The impact of weaning style on food preferences and body mass index in early childhood in a case-controlled sample" BMJ Open. February 6, 2012. http://bmjopen.bmj.com/content/2/1/e000298

External links[edit]