NS 132 SQ 21 - Infant Feeding: Study Questions Synopsis:...

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Infant Feeding: Study Questions Synopsis : Continuing w/ “Diet in the life cycle” - this lecture focuses on infant nutrition. We first examine infant growth & developmental milestones. As nutritional needs & physical capabilities continue to grow & expand through the infant & toddler time periods we look closely at their implication for infant feeding practices. The lecture includes a thorough discussion ō formula feeding & “best practices” for using formula for infant nutrition. Textbook readings: Chapter 14 a. Infant growth i. Rapid growth [Weight gain in the first 5 yrs. ō life] ii. Younger you are, faster you grow b. Weight i. doubles in 4-6 mos. ii. triples in 1 yr. iii. Doubles again bet. 1-5 yrs. c. Length i. increase 50% in 1st yr. ii. Continues until epiphyses close d. Composition i. Born w/ high body water content ii. Body water decreases to adult levels in 1st yr. iii. Protein content increases in first yr. e. Effects ō malnutrition (on growth) i. Hyperplasia ii. Hypertrophy [ Critical period ] f. Assessing infant growth i. Expressed in percentiles ii. Most informative charts: 1. Height for age 2. Weight for height iii. Diff. charts for premature infants g. Brain growth i. Hyperplasia stops at 18 mos. ii. IQ after age 5 more related to schooling than nutrition h. Adipose tissue i. Infant obesity not related to adult obesity ii. If infant is obese - assess feeding practices (is baby being overfed? Rapid growth How long does it take for an infant to double its birth weight? To triple it? Rapid growth, esp. right after birth : Infant weight doubles birth weight in 1 st 4-6 mos. & triples in 1 st yr . Weight doubles again bet. ages 1-5. When do the bones stop growing in length?
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Bones stop growing in length in late teens. Long bones continue to grow until epiphesial plates close. - 50% ↑ in length in 1 st yr. - ultimate height Ultimate height depends on nutrition potential What is stunting? What causes it? stunting : short height for age Food deprivation (common, poor nutrition) restricts genetic How many ō the world’s children are stunted? Half ō world’s children are short for their age ( i.e. stunted). Effects ō malnutrition Hyperplasia What is hyperplasia? What is the effect ō inadequate nutrition on hyperplasia? Can this effect be reversed? Why or why not? hyperplasia : ↑ in no. ō cells Effect ō inadequate nutrition ( i.e. malnourishment) arrests hyperplasia. No , this effect cannot be reversed; arrested growth is mostly irreversible. -
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This note was uploaded on 03/29/2008 for the course NUTRI SCI 132 taught by Professor Anderson during the Spring '08 term at Wisconsin.

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NS 132 SQ 21 - Infant Feeding: Study Questions Synopsis:...

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