Exam 2 Flashcards
infant nutrition needs to support…
rapid growth (doubles birth weight by 5 months), increasing levels of activity as infant matures, rapid development (growth and development of all organs, continued brain development for years)
human brain development in order
sensory pathways, language, higher cognitive function
0-6 months of age
breast milk or formula
6-12 months of age
incorporate solid food
total caloric intake accounts for
health status, growth rate, sleep and wake cycle, and physical activity
how many calories should infants consume per day?
490-610 (100kcal/kg body weight per day compared to 30 in adults)
energy needs: fat
fat content increases energy density of diet, percentage decreases from 6 months to a year, AMDR stays higher for infants than adults
What fats do infants need?
omega 3s and omega 6s because nervous system develops beyond the womb, and because it helps with brain development and cell membrane integrity
carbohydrate intake for infants
0-6 months: carbs in milk
6-12 months: increase in percent energy of types of carbohydrates (solids, decrease exposure through lactose)
lactase
enzyme that breaks down lactose to enable absorption (after infancy lactase gene expression decreases, activity peaks post natal period)
lactase non-persistence
lactose intolerance, inability to absorb lactose due to lack of lactase, bloating, cramping, diarrehea
lactase persistence
mutation of the lactase gene, allows for adequate lactase production over a lifetime
infant protein needs
double compared to adults, easily met through breastmilk and formula (formula puts infant at risk for excessive or deficient protein intake)
iron infant needs
levels are low in breastmilk, if mother is deficient or if breastfed exclusively infant can take 1 mg supplement, iron fortified formula (drops)
Vitamin D
deficiency is high in breastfed infants, supplementation of 400 IU a day recommended (other risk factors include polluted climate)
fluoride
adequate levels needed for bone and teeth development, brush around 6 months with pea/bite sized fluoride tooth paste, drink fluorinated water (after 6 months), over exposure may cause spotting, it could interfere with minerals, mutations)
Vitamin K
plays a role in blood clotting, newborn at risk for hemorrhaging, newborns receive injection (provides enough until gut bacteria can synthesize)
introducing solid foods
recommended to start after 6 months (neck and teeth), majority of infants start earlier, formula fed starts earlier, helps build tongue and mouth muscles, cereal is good first option for iron, oatmeal preferred (decrease arsenic)
introduction order
spoon fed, soft finger foods, differing textural finger foods, use of utensils
liquids
water given when baby is sick or in hot/humid conditions, water throughout day is normal after 6 months, at 1 year transition to whole cow milk
nursing bottle syndrome
improper bottle use, increased sugar contact time with teeth (from juice in bottle or bottle in bed) juice not recommended until 1 year (watered down)
choking hazards
nuts, whole grapes, sticky foods, raw fruits and veggies
foods to avoid
honey (can harbor toxic bacteria that digestive tract cannot yet handle, causing “botulism”), cows milk (infants cannot handle nutrient load and missing key ingredients)
growth chart
plots patterns of children, adults, and adolescents of the same weight and sex height, weight, and head circumference. slight fluctuations are normal
big fluxes on growth chart
indicators of poor growth: increasing weight but not height (overfed), slower growth (disease, abuse, mal-absorption, congenital disease)
breastmilk vs. formula
both meet nutrient requirements, choice depends on
childhood, preadolescence
childhood: 5-12
preadolescence: 9-11 for girls, 10-12 for boys
psychosocial, cognitive and emotional development is rapid
ecocentric/make believe to concrete and rationality
socialization and independence
home environment play a role in these developmental aspects
eating behaviors in childhood and preadolescence
do chores, make meals, involvement in meal preparation influence positive attitudes towards food
innate hunger cues
decline starting at about age 9, hunger is now influenced by “external factors”
external factors influence innate hunger cues
peer pressure, stress, preferred foods, time of day
increased independence influencing eating
own money to buy snacks, choose what they prefer, finish all because it tastes good, boredom
childhood and preadolescence growth rate
growth rate declines, but still growing
calories per day depend on size, activity, and age
DRI covers 4-8 and 9-13
carbohydrates in childhood and adolescence
focus on fiber and whole grains, correlated fiber intake as adult, associated with health benefits seen in adults
protein in childhood and adolescence
lean tissue development
micronutrients in childhood and adolescence
iron: important to lean body mass deposition, brain development, RBC
calcium and vitamin D: important for rapid bone mass development, only 15% of preadolescence females are consuming adequate calcium (due to social constructs and influence)
fats in childhood and adolescence
essential fatty acids focus
what are children and adolescence in the US actually eating?
toon many calories, too many foods in fats and added sugar (SOFAS), too many refined grains, from 4-8 and 9-13, males and females consume the most added sugars
economic, racial, and ethnic disparities
low-income children exposed to more nutrient poor foods, culturally irrelevant or experience food insecurity
how are children getting their calories?
eating away from home, snacking, beverages
smart snacks standards
federal requirement for schools to have healthy options available (vending machines and snack stores): low in sodium, have a fruit or vegetable available, having whole grains
rationale for smart snacks standards
remember: about 27% of calories come from snacks, healthier eating leads to better academics, most children buy food at school, if avaliable
continued work needed for smart snacks standards
good start, need to be more in line with dietary guidelines, snacks still contain: synthetic food dyes (ADHD), non-nutritive sweeteners, too many added sugars
exclusive breastfeeding
no other food, not even water
partial breastfeeding
providing the infant of a mix of breastmilk and formula
complementary foods
solid foods provided to the infant in addition to breastmilk
expression of milk
removal of breastmilk by hand, manual or electric breast pump
childhood and preadolescence: physical activity guidelines
- 60 or more minutes per day
- variety of intensities
- reduce time sitting
physical activity will: prevent chronic disease, develop of muscle, bone, and joint, shape cardiovascular health
current breastfeeding recommendations
exclusive breastfeeding for about the first six months of a baby’s life (WHO), continue breastfeeding for as long as mutually desired by the parent and baby up to 2 years of space (AAP), with appropriate complementary foods until 2 years of age and beyond
breastmilk composition
meet nutrient needs of infant plus bioactive factors, nutrient and bioactive contents vary daily: changes with breast feeding parents diet, effected by environment, freeze and thaw
breast milk production and release
amount produced varies with infant demand
infant suckling produces hormones
prolactin stimulates milk production, oxytocin stimulates contraction and release of milk
first stage of breastfeeding
colostrum: first fluid produced following birth, “immature birth,” yellowish fluid (liquid gold),
higher levels of immune factors (lactoferrin, white blood cells, IgA), lower in fat and carbs, higher in protein and micronutrients, higher water provides laxative effects and keeps baby hydrated
low volume- only about 1.5 fluid ounces per day
produced for about 2-4 days following birth
what could influence the activity level of a child?
caretaker as a model, peer influences, community/school offerings, weather, climate, built environment (parks, walking, biking, affordable indoor facilities)
public health impacts of a “healthy” built environment
address chronic disease, promote safety, promote local economic growth, promote health equity, promote clean environment
BMI in children
weight status is determined by BMI percentile, put into different weight categories
second stage of breast feeding
transitional milk- higher in fat and sugar, still contains bioactive factors
increasing in quantity: 10-28 fl oz. per day
produced during 5-14 days post natally
third stage of breastfeeding
mature milk- produced about 2 weeks post-birth
high in energy (fat and carbs), lower protein
65-75 kcal per 3.25 oz
eat about 25-30 oz/day
infant will eat every 2-4 hours
stages of breastfeeding in order
colostrum, transitional, mature milk
mature milk carbohydrates
free glucose - important energy source
lactose is most abundant carbohydrate (energy source, small amounts travel to baby’s large intestine to stimulate microbiome growth (helps to fight foreign microorganisms)