Nutrition 526 - 2007 Introduction. Resources & Biology Adaptive Mechanisms Goals of Reproduction DNA...
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Nutrition 526 - 2007Introduction
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Resources
& Biology
Adaptive Mechanisms
Goals of Reproduction
DNA & metabolic programming
Access to Food
Knowledge &
Skills
Support: basic needs, health care, cultural/social
Physiologic responses to reproduction & growth
Behavioral responses
Healthy mother who can nourish infant & produce further offspring
Optimal growth & development of offspring
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Questions to Consider…
• Given individual variations in the physiology of pregnancy and infancy, what ranges of nutrient intake best support optimal outcomes? (and what are those optimal outcomes?)
• What are the best indices of nutritional status in pregnancy and infancy? – individual– population
• What services & systems best promote nutritional health in pregnancy and infancy?– individual– population
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Structures, Policies, SystemsLocal, state, federal policies and laws
InstitutionsRules, regulations, policies &
informal structures
CommunitySocial Networks, Norms, Standards
InterpersonalFamily, peers, social networks,
associations
IndividualKnowledge, attitudes,
beliefs
Social-Ecological Model for Determinants of Access to Resources & Nutrition Behaviors
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Individual - Pregnancy• Physiology and Psychology of Pregnancy• Maternal Preconceptual status
– Inter-generational programming
• Diet in pregnancy: energy/weight gain, macro & micronutrients
• Behaviors that impact nutritional status– Substances: alcohol, caffeine, tobacco, drugs– Physical activity– Oral health– Pregnancy intendedness
• Stage of development: adolescence• High risk situations: GDM, PIH,
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Intrapersonal/Community
• Social and cultural environments
• Support from friends and family
• Health and nutrition care providers
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Institutional
• Hospital breastfeeding & formula policies
• Child Care policies
• School policies for pregnant and parenting teens
• Worksite lactation policies
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Policy & Environment
• Nutrition Assistance Programs for pregnancy, lactation and early childhood.
• Insurance policies for lactation support
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Structures, Policies, Systems
Institutions
Community
Interpersonal
Individual
Adaptations of the Model for Course Framework
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Maternal-infant dyad
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A Public Health Approach to Maternal and Infant Health
• Assessment: Trends & Demographics
• Policy Development: NGA
• Assurance: Surveillance and monitoring progress towards goals
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A Public Health Approach to Maternal and Infant Health
• Assessment: Trends & Demographics
• Policy Development: NGA
• Assurance: Surveillance and monitoring progress towards goals
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Health, United States, 2005: www.cdc.gov/nchs/hus.htm
WA: The total number of live births has remained stable since 1998 at ~ 80,000 births per year.
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Percentage of Parents Who Were Married or Cohabiting at Birth of First Child, by Race/Ethnicity and Sex
MMWR; September 15, 2006 / 55(36);998
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Distribution of Births, by Gestational Age --- United States, 1990 and 2005
MMWR, April 2007
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http://www.chipublib.org/004chicago/disasters/infant_mortality.html
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Infant Mortality
• Infant mortality rate – Deaths of infants aged under 1 year per 1,000 or 100,000 live births. The infant mortality rate is the sum of the neonatal and postneonatal mortality rates.
• Neonatal mortality rate – Deaths of infants aged 0-27 days per 1,000 live births. The neonatal mortality rate is the sum of the early neonatal and late neonatal mortality rates
• Postneonatal mortality rate – Deaths to infants aged 28 days-1 year per 1,000 live births.
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Infant Mortality
• Sensitive indicator of community health because reflects influences by various social factors– E.g. environment (housing, sanitation, safe food
and water)
• Historically decrease in infant mortality associated with improvements in living conditions and health services
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Factors associated with infant mortality
• Birthweight: most critical
• Infection: bacterial, viral, parasitic
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Interconnections
• Growth failure– Increased risk for infection
• Infection– Increased risk for growth failure
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http://mchb.hrsa.gov/mchirc/chusa_05/healthstat/infants/0307iimr.htm
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INDICATOR HEALTH2: DEATH RATES AMONG INFANTS BY RACE AND HISPANIC ORIGIN OF MOTHER, 1983–2004
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Causes of Infant Death
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Health Affairs, Vol 23, Issue 5, 2004
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INDICATOR HEALTH1: PERCENTAGE OF INFANTS BORN WITH LOW BIRTHWEIGHT BY MOTHER'S RACE AND HISPANIC ORIGIN, 1980–2005
http://www.childstats.gov/americaschildren/health1.asp
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LBW Rate (%)
Premature Birth Rate (%)
Infant Mortality Rate
(%)
African Americans
13.4 17.7 13.5
Asians 7.8 10.4 4.6
Native Americans
7.2 13 9.7
Whites 6.9 11 5.7
Hispanics 6.5 11.6 5.4
NGA Center for Best Practices, June 2004
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Health Affairs, Vol 23, Issue 5, 2004
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Hispanic-American Infant Mortality Rates by Ethnicity, 2004Cuban ethnicity 4.55
Puerto Rican 7.82
Mexican 5.47
Central/South American
4.65
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Policy approach
• Access to food – Individual maternal-infant
dyad– Community based– Public health and health
services
• Knowledge and beliefs– individual– Family, community– Public health and health
services
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Determinants of infant feeding practices
• Maternal employment
• Health sector activities
• Commercial availability and promotion of processed milks and cereals
• Urbanization v.s. modernization
• Poverty and maternal nutrition
• Perceived insufficiency of breast milk
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History
• Child welfare movements became noticeable in industrialized countries (U.S. and Western Europe– “Political, economic, and humanitarian
motivations all converged to reduce the large wasteage of child life”
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History
• World War 1 and 2– Recruits unfit for service– “weeklings”
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History
• Child welfare movements directed toward general hygeine for disease prevention, dietary imrpovements, and antepartum care– Infant Stations: to provide clean milk, instruct
new mothers on child/infant care, encourage breastfeed
– Innovative approach in 1908 establishment of Division of Child Hygeine in NYC
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Child Hygiene Bureau NYC
• Tracked from register of live births
• Home nursing visits
• Education on infant care
• Milk stations
– “there were 1200 fewer deaths when comparable to previous summer”
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Maternal Mortality
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African American and White Women Who Died of Pregnancy Complications,* United States
* Annual number of deaths during pregnancy or within 42 days after delivery, per 100,000 live births. † The apparent increase in the number of maternal deaths between 1998 and 1999 is the result of changes in how maternal deaths are classified and coded. Source: CDC, National Center for Health Statistics.
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Risk of Maternal Death
• The risk of death for African American women is almost four times that for white women.
• The risk of death for Asian and Pacific Islander women who immigrated to the United States is two times that for Asian and Pacific Islander women born in the United States.
• The risk of death is nearly three times greater for women 35–39 years old than for women 20–24 years old. The risk is five times greater for women over 40.
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The Most common pregnancy complications
• Ectopic pregnancy • Depression• High blood pressure • Infection • Complicated delivery • Diabetes• Premature labor • Hemorrhage
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Ferrara. A. Diabetes Care. Jul 2007
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Ferrara. A. Diabetes Care. Jul 2007
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Chu SY, Diabetes Care. August 2007
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Dabelea, D Diabetes care. July, 2007
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Pettit DJ. Diabetes Care, July 2007.
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Policy Development: Poor Pregnancy Outcomes are Costly
• Medicaid finances 40% of annual births in the US and pays for 50% of hospital stays for premature and LBW.– Medicaid-funded deliveries represented
45.6% of births in WA in 2003.
• The care cost for children with one of 17 common birth defects is $8 billion per year in the US.
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Top Three “Best Practices” to Improve Birth Outcomes and Reduce High Risk Births
(NGA, June 2004)
• Improve access to medical care and health care services
• Encourage good nutrition and healthy lifestyles– Eating healthy foods– Taking folic acid– Harmful substances– Violence
• Reduce use of harmful substancesO’connor J et al. Health Promotion Practice, (1) 2005
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NGA: Specific policy actions for nutrition
• WIC – serves 45% of all US infants, governors can increase access
• Folic Acid initiatives– Office-based education of health care
providers– College outreach programs– Social marketing
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Healthy People 2010 Goals Related to Maternal and Infant
& Nutrition
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Reduce low birth weight (LBW) and very low birth weight (VLBW).
1998Baseline
2010TargetReduction in Low and
Very Low Birth Weight Percent
Low birth weight (LBW) 7.6 5.0Very low birth weight(VLBW)
1.4 0.9
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Reduce preterm births
Reduction inPreterm Births
1997Baseline (%)
2010Target (%)
Total preterm 11.4 7.6
Live births at 32 to 36weeks of gestation
9.4 6.4
Live births at lessthan 32 weeks ofgestation
1.9 1.1
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Reduce the occurrence of spina bifida and other neural tube defects (NTDs)
• Target: 3 new cases per 10,000 live births.
• Baseline: 6 new cases of spina bifida or another NTD per 10,000 live births in 1996.
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Increase the proportion of pregnancies begun with an optimum folic acid level.
Increase in PregnanciesBegun With OptimumFolic Acid Level
1991–94Baseline*
2010Target
Consumption of at least400 μg of folic acid eachday from fortified foods ordietary supplements bynonpregnant women aged15 to 44 years
21% 80%
Median RBC folate levelamong nonpregnantwomen aged 15 to 44years
161 ng/ml 220 ng/ml
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Multivitamin Use
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Multivitamin Use
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Increase abstinence from alcohol, cigarettes, and illicit drugs among pregnant women
Increase in ReportedAbstinence in PastMonth FromSubstances byPregnant Women*
1996–97Baseline %
2010Target %
Alcohol 86 94
Binge drinking 99 100
Cigarette smoking† 87 98
Illicit drugs 98 100
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MMWR, December 24, 2004
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Alcohol
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Smoking
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Increase the proportion of mothers who breastfeed their babies
Increase in MothersWho Breastfeed
1998Baseline (%)
2010Target (%)
In early postpartumperiod
64 75
At 6 months 29 50
At 1 year 16 25
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Increase smoking cessation during pregnancy
• Target: 30 percent.
• Baseline: 12 percent smoking cessation during the first trimester of pregnancy in 1991 (age adjusted to the year 2000 standard population).
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Breastfeeding Duration
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Breastfeeding Duration
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Reduce growth retardation among low income children under age 5 years
• Target: 5 percent.
• Baseline: 8 percent of low-income children under age 5 years were growth retarded in 1997 (defined as height-for-age below the fifth percentile in the age-gender appropriate population using the 1977 NCHS/CDC growth charts;31 preliminary data; not age adjusted).
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Reduce iron deficiency among young children and females of childbearing age.
Reduction in IronDeficiency*
1988–94Baseline (%)
2010Target (%)
Children aged 1 to 2years
9 5
Children aged 3 to 4years
4 1
Nonpregnant femalesaged 12 to 49 years
11 7
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Reduce anemia among low-income pregnant females in their third trimester
• Target: 20 percent.
• Baseline: 29 percent of low-income pregnant females in their third trimester were anemic (defined as hemoglobin < 11.0 g/dL) in 1996
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Anemia Rates - 1996
African American, non-Hispanic 44%
American Indian/Alaska Native 31%
Asian/Pacific Islander 26%
Hispanic 25%
White, non-Hispanic 24%
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Population v.s. individual
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