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![Page 1: Preconception Health & Health Care: A Life-Course Perspective Michael C. Lu, MD, MPH Associate Professor Department of Obstetrics & Gynecology David Geffen.](https://reader034.fdocuments.net/reader034/viewer/2022042822/56649e2f5503460f94b1f952/html5/thumbnails/1.jpg)
Preconception Health & Health Care: A Life-Course Perspective
Michael C. Lu, MD, MPHAssociate Professor
Department of Obstetrics & GynecologyDavid Geffen School of Medicine at UCLA
Department of Community Health SciencesUCLA School of Public Health
Secretary’s Advisory Committee on Infant MortalityJanuary 24, 2008
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What is Preconception Care?
A set of interventions that aim to identify and modify biomedical, behavioral, and social risks to a woman's health or pregnancy outcome through prevention and management.
Johnson K, Posner SF, Biermann J, Cordero JF, Atrash HK, Parker CS, Boulet S, Curtis MG; CDC/ATSDR Preconception Care Work Group; Select Panel on Preconception Care. Recommendations to improve preconception health and health care--United States. A report of the CDC/ATSDR Preconception Care Work Group and the Select Panel on Preconception Care. MMWR Recomm Rep. 2006 Apr 21;55(RR-6):1-23.
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What Is Preconception Care? Risk Assessment
Reproductive life plan Past pregnancy history Past medical & surgical history Medications & allergies Family & genetic history Social history Behavioral & nutritional assessment Mental health Laboratory testing
Health Promotion Family planning Stress resilience Nutritional preparedness Immune allostasis Healthy environment
Medical & Psychosocial Interventions Individualized for identified risks Preventive services and primary care
Lu MC. Recommendations for preconception care. Am Fam Physician. 2007;76:397-400.
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Summary of the CDC/ATSDR Select Panel’s Recommendations to Improve Preconception Health and Health Care in the United States
Recommendation 1. Individual responsibility across the life span. Each woman, man and couple should be encouraged to have a reproductive life plan.
Recommendation 2. Consumer awareness. Increase public awareness of the importance of preconception health behaviors and preconception care services by using information and tools appropriate across various ages; literacy, including health literacy; and cultural/linguistic contexts.
Recommendation 3. Preventive visits. As a part of primary care visits, provide risk assessment and educational and health promotion counseling to all women of childbearing age to reduce reproductive risks and improve pregnancy outcomes.
Recommendation 4. Interventions for identified risks. Increase the proportion of women who receive interventions as follow-up to preconception risk screening, focusing on high priority interventions (i.e. those with evidence of effectiveness and greatest potential impact).
Recommendation 5. Interconception care. Use the interconception period to provide additional intensive interventions to women who have had a previous pregnancy that ended in an adverse outcome (i.e., infant death, fetal loss, birth defects, low birthweight, or preterm birth).
Recommendation 6. Prepregnancy checkup. Offer, as a component of maternity care, one prepregnancy visit for couples and persons planning pregnancy.
Recommendation 7. Health insurance coverage for women with low incomes. Increase public and private health insurance coverage for women with low incomes to improve access to preventive women’s health and preconception and interconception care.
Recommendation 8. Public health programs and strategies. Integrate components of preconception health into existing local public health and related programs, including emphasis on interconception interventions for women with previous adverse outcomes.
Recommendation 9. Research. Increase the evidence base and promote the use of the evidence to improve preconception health.
Recommendation 10. Monitoring improvements. Maximize public health surveillance and related research mechanisms to monitor preconception health.
Johnson K, Posner SF, Biermann J, Cordero JF, Atrash HK, Parker CS, Boulet S, Curtis MG; CDC/ATSDR Preconception Care Work Group; Select Panel on Preconception Care. Recommendations to improve preconception health and health care--United States. A report of the CDC/ATSDR Preconception Care Work Group and the Select Panel on Preconception Care. MMWR Recomm Rep. 2006 Apr 21;55(RR-6):1-23.
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Life-Course Perspective
A way of looking at life not as disconnected stages, but as an integrated continuum
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Life Course Perspective
Lu MC, Halfon N. Racial and ethnic disparities in birth outcomes: a life-course perspective.Matern Child Health J. 2003;7:13-30.
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Life Course Perspective
Early programming Cumulative pathways Preconception health & healthcare
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Early Programming
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Barker HypothesisBirth Weight and Coronary Heart Disease
0
0.25
0.5
0.75
1
1.25
1.5
<5.0 5.0-5.5 5.6-7.0 7.1-8.5 8.6-10.0 >10.0
Birthweight (lbs)
Age Adjusted Relative Risk
Rich-Edwards JW, Stampfer MJ, Manson JE, Rosner B, Hankinson SE, Colditz GA et al. Birth weight and risk of cardiovascular disease in a cohort of women followed up since 1976. Br Med Jr 1997;315:396-400.
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Barker HypothesisBirth Weight and Hypertension
155
160
165
170
Sys
toli
c P
ress
ure
(m
mH
g)
<=5.5 5.6-6.5 6.6-7.5 7.6-8.5 >8.5
Birthweight (lbs)
Law CM, de Swiet M, Osmond C, Fayers PM, Barker DJP, Cruddas AM, et al. Initiation of hypertension in utero and its amplification throughout life. Br Med J 1993;306:24-27.
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Barker HypothesisBirth Weight and Insulin Resistance Syndrome
0
2
4
6
8
10
12
14
16
18
<5.5 5.6-6.5 6.6-7.5 7.6-8.5 8.6-9.5 >9.5
Birthweight (lbs)
Odds ratio adjusted for BMI
Barker DJP, Hales CN, Fall CHD, Osmond C, Phipps K, Clark PMS. Type 2 (non-insulin-dependent) diabetes mellitus, hypertension and hyperlipidaemia (Syndrome X): Relation to reduced fetal growth. Diabetologia 1993;36:62-67.
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Barker HypothesisBirth Weight and Insulin Resistance Syndrome
Birth weight
<5.5 5.6-6.5 6.6-7.5 7.6-8.5 8.6-9.5 >9.5
Odds Ratio 18 8.4 8.5 4.9 2.2 1
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Maternal Stress & Fetal Programming
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Prenatal Stress & Programming of the Brain
Prenatal stress (animal model) Hippocampus
Site of learning & memory formation Stress down-regulates glucocorticoid receptors Loss of negative feedback; overactive HPA axis
Amygdala
Site of anxiety and fear Stress up-regulates glucocorticoid receptors Accentuated positive feedback; overactive HPA
axis
Welberg LAM, Seckl JR. Prenatal stress, glucocorticoids and the programming of the brain.J Neuroendocrinol 2001;13:113-28.
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Prenatal Programming of the Hypothalamic-Pituitary-Adrenal Axis
Welberg LAM, Seckl JR. Prenatal stress, glucocorticoids and the programming of the brain.J Neuroendocrinol 2001;13:113-28.
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Epigenetics
Gibbs WW. The Unseen Genome: Beyond DNA. Scientific American 2003
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EpigeneticsSame Genome, Different Epigenome
R.A. Waterland, R.A. Jirtle, "Transposable elements: targets for early nutritional effects on epigenetic gene regulation," Mol Cell Biol, 23:5293-300, 2003. Reprinted in the New Scientist 2004
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Prenatal Programming of Childhood Obesity
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Epidemic of Childhood Overweight & Obesity
0
5
10
15
20
25
1976-1980 1988-1994 1999-2002
Perc
en
t
Black Hispanic White
Source: National Center for Health Statistics, National Health and Nutrition Examination Survey
Note: Estimate not available for 1976-1980 for Hispanic; overweight defined as BMI at or above the 95th percentile ofr the CDC BMI-for-age growth charts
Children 6-18 Overweight
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Prenatal Programming ofChildhood Overweight & Obesity
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Maternal Diabetes & Intrauterine Hyperglycemia
Intrauterine Hyperinsulinemia (Fetal Pancreatic β Cells)
Prenatal& PostnatalHyperleptinemia
Preadipocyte Differentiation
Adipocyte Hyperplasia
HypothalamicLeptin Resistance
Pancreatic β- Cell Leptin Resistance
HyperphagiaHyperinsulinism
Programmed Insulin
Resistance
Postnatal Hyperinsulinemia
Adipogenesis
Prenatal Programming of Childhood Obesity
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Cumulative Pathways
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Photo: http://www.lam.mus.ca.us/cats/encyclo/smilodon/
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Allostasis: Maintain Stability through Change
McEwen BS. Protective and damaging effects of stress mediators. N Eng J Med. 1998;338:171-9.
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Allostastic Load:Wear and Tear from Chronic Stress
McEwen BS. Protective and damaging effects of stress mediators. N Eng J Med. 1998;338:171-9.
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HPA Axis & Immune SystemChikanza 2000
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Stressed vs. Stressed Out Stressed
Increased cardiac output
Increased available glucose
Enhanced immune functions
Growth of neurons in hippocampus & prefrontal cortex
Stressed Out
Hypertension & cardiovascular diseases
Glucose intolerance & insulin resistance
Infection & inflammation
Atrophy & death of neurons in hippocampus & prefrontal cortex
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Allostasis & Allostatic Load
McEwen BS, Lasley EN. The end of stress: As we know it. Washington DC: John Henry Press. 2002
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Rethinking Preterm Birth
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Sequelae of Preterm Birth
Term Births
Preterm Birth
75%Perinatal Perinatal MortalityMortality
NeurologicNeurologicDisabilitiesDisabilities
50%
12%
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Racial & Ethnic DisparitiesInfant Mortality
13.6
5.7
0
2
4
6
8
10
12
14
African American White
Deaths Per 1,000 Live Births
NCHS 2007
Year 2010 Goal
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Racial & Ethnic DisparitiesPreterm Births < 37 Weeks
18.4
11.7
0
2
4
6
8
10
12
14
16
18
20
African American White
Percent of Live Births
NCHS 2007
Year 2010 Goal
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Racial & Ethnic DisparitiesVery Preterm Births < 32 Weeks
4.17
1.64
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
African American White
Percent of Live Singleton Births
Year 2010 Goal
NCHS 2007
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Rethinking Preterm Birth
Vulnerability to preterm delivery may be traced to not only exposure to stress & infection during pregnancy, but host response to stress & infection (e.g. stress reactivity & inflammatory dysregulation) patterned over the life course (early programming & cumulative allostatic load)
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Preterm Birth &Maternal Ischemic Heart Disease
Kaplan-Meier plots of cumulative probability of survival without admission or death from ischemic heart disease after first pregnancy in relation to preterm birth
Smith et al Lancet 2001;357:2002-06
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Preterm Birth &Maternal Hypertension
Lu, et al. manuscript in preparation
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Preconception Health and Health Care: A Life-Course Perspective
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Preconception is a critical period for children’s health.
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Early Prenatal Care Is Too Late
To prevent some birth defects To prevent implantation errors To restore allostasis
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Preconception is a critical period for children’s health
Folic acid Rubella seronegativity Diabetes (preconception) Hypothyroidism HIV/AIDS Maternal phenylketonurea (PKU) Oral anticoagulant Antiepiletic drugs Isotretinoins (Accutane) Smoking Alcohol misuse Obesity STD Hepatitis B
Atrash HK, Johnson K, Adams MM, Cordero JF, Howse J. reconception Care for Improving Perinatal Outcomes: The Time to Act. Matern Child Health J. 2006 Jun 14.
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Preconception Care for Men tobacco alcohol drugs (e.g. anabolic steroids) caffeine poor diet radiation and chemotherapy testicular hyperthermia diabetes mellitus varicoceles epididymitis 1,2-dibromo-3-chloropropane nonylphenol polycyclic aromatic hydrocarbons (PAHs) polychlorinated biphenyls (PCBs) dioxins phthlates
Aitken RJ, Koonman P, Lewis SE. Seeds of concern. Nature. 2004 Nov 4;432(7013):48-52
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Early Prenatal Care Is Too LateImplantation Errors
Norwitz ER, Schust DJ, Fisher SJ. Implantation and the survival of early pregnancy. N Engl J Med. 2001 Nov 8;345(19):1400-8.
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The Role of the Placenta in Fetal Programming
Godfrey KM. The role of the placenta in fetal programming-a review. Placenta. 2002;23 Suppl A:S20-7.
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Preconception care is no quick fix for women’s health.
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Where is the A in MCH?www.cincinnatichildrens.org
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It take more than preconception care to promote preconception health
Sustainable development Human development Economic development Community development
Aday LA. (Editor). Reinventing Public Health: Policies and Practices for a Healthy Nation.
San Francisco: Jossey-Bass 2005.
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Preconception care is no silver bullet for disparities in birth outcomes.
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Closing the Black-White Gap in Birth Outcomes:A 12-Point Plan
1. Provide interconception care to women with prior adverse pregnancy outcomes2. Increase access to preconception care for African American women3. Improve the quality of prenatal care4. Expand healthcare access over the life course5. Strengthen father involvement in African American families6. Enhance service coordination and systems integration7. Create reproductive social capital in African American communities8. Invest in community building and urban renewal9. Close the education gap10. Reduce poverty among Black families11. Support working mothers and families12. Undo racism
Lu MC, Kotelchuck M, Hogan V, Jones L, Jones C, Halfon N. Closing the Black-White gap in birth outcomes: A life-course approach. Ethnicity and Disease Forthcoming in 2008.
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All this will not be finished in the first 100 days. Nor will it be finished in the first 1,000 days, nor in the life of this Administration, nor even perhaps in our lifetime on this planet. But let us begin.
John F Kennedy (1961)
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