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Below is a compilation of various medical studies on the advantages of breastfeeding,
compiled by Dr. Jon Ahrendsen. Don't forget about one of the main
benefits of breastfeeding:
watching your happy, healthy child grow up, knowing you've given her the very best you
could give.
Enjoy!
Benefits for Infants
1.
Protects Against Infection
a. Diarrhea
Children less than 12 months of age had a lower incidence of acute diarrheal disease
during the months they were being breastfed than children that were fed with formula
during the same period.
Source: Lerman,Y. et al. "Epidemiology of acute diarrheal diseases in
children in a high standard of living settlement in Israel". Pediatr Infect Dis J
1994; 13(2);116-22.
b. Haemophilus Influenza
In a population based case control study of risk factors for primary invasion of
haemophilus influenza, type B disease, breastfeeding was protective of infants less than
6 months of age.
Source: Cochi, S.L. "Primary Invasive Haemophilus Influenza Type B Disease,
A Population Based Assessment of Risk Factors". Journal of Pediatrics 1986.
c. Enhances Vaccine Response
The antibody levels of immunized infants were significantly higher in the breastfed
than the formula-fed group. These findings are strong evidence that breastfeeding
enhances the active humoral immune response in the first year of life.
Source: Papst, H.F. ,
Spady, D.W. "Effect of Breast Feeding on Antibody Response to Conjugate
Vaccine". Lancet, 1990.
The breastfed group had significantly higher antibody levels than two formula-fed
groups together. Breastfed infants thus showed better serum and secretory responses to
perioral and parenteral vaccines than the formula-fed, whether with a conventional or
low-protein content.
Source: Van-Coric, M. "Antibody Responses to Parental & Oral
Vaccines Where Impaired by Conventional and Low-Protein Formulas as Compared to Breast
Feeding". Acta Paediatr Scand 1990; 79: 1137-42.
Human milk can transfer specific or nonspecific immunities to the external mucosal
surface of the intestine and possibly to the respiratory tract of the newborn. The
acquisition of such passive immunity is particularly important in the early neonatal
period when the immune system is immature.
Source: Chang, S.J. "Antimicrobial Proteins of
Maternal and Cord Sera and Human Milk in Relation to Maternal Nutritional Status". A.
M. J. CLIN NUTR, 1990.
d. NEC
Among babies born at more than 30 weeks gestation, confirmed necrotizing enternal
colitis was rare in those whose diet included breast milk; it was 20 times more common in
those fed formula only.
Source: Lucas, A., Cole, T.J., "Breast Milk and Neonatal Necrotizing
Enteral Colitis". Lancet 1990; 336:1519-23.
e. Otitis Media
Short duration of breastfeeding involved another significant risk of recurrent
respiratory infections and otitis media.
Source: Alho, O., "Risk Factors for Recurrent Acute
Otitis Media and Respiratory Infection in Infancy". Int J Ped
Otorhinolaryngology 1990; 19:151-61.
Significantly increased risk for acute otitis media as well as prolonged duration of
middle ear effusion were associated with male gender, sibling history of ear infection and
not being breastfed.
Source: Teele, D.W., Apidemilogy of Otitis Media During the First Seven
Years of Life in Greater Boston: A prospective, Cohort Study". J of INFEC DIS.1989.
f. Herpes Simplex
Mothers milk could play a role in the protection of newborns from Herpes Simplex virus
II contamination.
Source: Lopez, I., "Neutralizing Activity Against Herpes Simplex Virus in
Human Milk". Breast Feeding REV 1990; 11(2): 56-58.
g. Respiratory Syncytical Virus (RSV)
Breastfeeding was associated with a lower incidence of RSV infection during the first
year of life.
Source: Holberg,C.J., "Risk Factors for RSV Associated lower Respiratory
Illnesses in the First Year of Life". AM J Epidemiol 1991; 133 (135-51).
h. Respiratory Infections
The authors presented results found in infants with two or more episodes of acute
chronic bronchitis. They found that approximately twice as many
bottle-fed infants
presented with the problem as those who were breastfed.
Source: de Duran, C.M. "Cytologic
Diagnosis of Milk Micro Aspiration". IMM ALLERGY PRACTICE 1991; xiii (10);402-5.
There was a strong negative effect modification by breastfeeding: relative odds of
respiratory illness with maternal smoking were seven times higher among children who were
never breastfed then among those who were breastfed.
Source: Woodwar, A. "Acute Respiratory
Illness in Adelaide Children: Breast Feeding Modifies the Effect of Passive Smoking". J Epidemiol in Comm Health 1990;44:224-30.
2. Protects Against Illnesses
a. General
Infants of a middle class and well-educated populations benefit from the breastfeeding
practice and its protective effect, more so if they are exclusively breastfed and for a
longer period.
Source: Palti, H., "Episodes of Illness in Breast Fed & Bottle Fed infants
in Jerusalem". ISR J MED SCI, 1984.
b. Immunologic Development
Enhanced fecal SIgA in breastfed infants is not cause solely by the presence of IgA in
breast milk; it represents a stimulatory effect of breastmilk on the gastrointestinal
humeral immunologic development.
Source: Koutras,A.K., "Fecal Secretory Immunoglobulin A in
Breast Milk vs. Formula Feeding in Early Infancy". J Ped Gastro Nutr, 1989.
c. Wheezing
Breastfeeding seems to protect against wheezing, respiratory tract illnesses in the
first four months of life, particularly when other risk factors are present.
Source: Wright, A.L.,
"Breastfeeding and lower respiratory Tract Illnesses in the First Year of Life." British Medical Journal, 1989.
d. SIDS
A study indicated that breastfeeding was protective against SIDS, Consistent
with an effect mediated through the prevention of gastrointestinal and/or respiratory
disease.
Source: Hoffman, H.J., "Risk Factors for SIDS: Results of the National Institute of
Child Health and Human Development SIDS Cooperative Epidemiologic Study". Ann NY ACAD
Sci, 1988.
Not breastfeeding at discharge from an obstetric hospital at any stage of the infants
life was associated with an increased risk of SIDS.
Source: Mitchell, A. "Results from the
First Year of The New Zealand Count Death Study". N.Z. Med A, 1991; 104:71-76.
e. General Morbidity
There is an inverse relationship to breastfeeding and morbidity. This was most
prominent in the first year of life, but it was also present in the first three years.
Source: Van
Den Bogaard, C. "Relationship Between Breast Feeding in Early Childhood and Morbidity
in a General Population". Fan Med, 1991; 23:510-515.
f. AIDS
The lack of a dose response affect between breastfeeding and perinatal HIV-1
transmission in the presence of the protective effect of breastfeeding against common
causes of early childhood morbidity and mortality support the current WHO recommendation
that breastfeeding should continue to be promoted in all developing countries, including
those with high HIV-1 prevalence rates in women of child bearing age.
Source: Ryder,R.,
"Evidence from Zaire that Breastfeeding by HIV-1 seropositive Mothers is not a Major
Route for Perinatal HIV-1 Transmission but does Decrease Morbidity". AIDS 1991;
5(6):709-14.
g. Infant Survival
There is an association between breastfeeding up to 6 months of age and survival of
infants throughout the first year of life. The younger the infant and the longer the
breastfeeding, the greater the estimated benefits in terms of death averted.
Source: Habicht,
J.P., "Does Breast Feeding Really Save Live, or Are Apparent Benefits due to
Biases?" Am J Epidemiology, 1986.
h. Gastroesophageal Reflex
Breastfed neonates demonstrate gastroesophageal reflux episodes of significantly
shorter duration than formula-fed neonates.
Source: Heacock, H.J., "Influence of Breast vs. Formula Milk in Physiologic Gastroesophageal Reflux in Health Newborn Infants". J. Pediatr Gastroenterol Nutr, 1992 January; 14(1): 41-6.
i. Multiple Sclerosis
Although thought to be multifactorial in origin, and without a clearly defined
etiology, lack of breastfeeding does appear to be associated with an increased incidence
of multiple sclerosis.
Source: Dick, G. "The Etiology of Multiple Sclerosis. " Proc Roy
Soc Med 1976;69:611-5.
j. Inguinal Hernia
Human milk contains gonadotropin releasing hormone, which may affect the maturation of
neonatal testicular function. This case control study showed breastfed infants had a
significant dose response reduction in inguinal hernia.
Source: Pisacane, A. "Breast-feeding
and inguinal hernia" Journal of Pediatrics 1995:Vol 127, No. 1, pp 109-111.
k. Cryptorchidism (Undescended Testicle)
This case controlled study showed a significant association of cryptorchidism and lack
of breastfeeding.
Source: Mori, M. "Maternal and other factors of cryptorchidism: a
case-control study in Japan" Kurume Med J 1992:39:53-60.
3. Protection From Allergies
a. Allergic Families
Breastfeeding, even for short periods, was clearly associated with lower incidence of
wheezing, prolonged colds, diarrhea, and vomiting.
Source: Merrett, T.G., "Infant Feeding
& Allergy: 12 Month Prospective Study of 500 Babies Born into Allergic Families". American Allergies, 1988.
b. Eczema
Eczema was less common and milder in babies who were breastfed (22%) and whose
mothers
were on a restricted diet (48%). In infants fed casein hydrolysate, soymilk or cows milk,
21%, 63%, and 70% respectively, developed atopic eczema.
Source: Chandra R.K., "Influence of
Maternal Diet During Lactation and the Use of Formula Feed and Development of Atopic
Eczema in the High Risk Infants". Br Med J. 1989.
4. Enhances Development and
Intelligence
a. Higher IQ
Children who had consumed mother's milk by tube in early weeks of life had a
significantly higher IQ at 7.5 to 8 yr.. than those who received no maternal milk, even
after adjustment for differences between groups and mothers' educational and social class.
Source: Lucas, A., "Breast Milk and Subsequent Intelligence Quotient in Children Born
Preterm". Lancet 1992;339:261-62.
b. Cognitive Development
Supplementary regression analysis examining the strength of relationship between
duration of breastfeeding and cognitive development show a small but significant
relationship between duration of breastfeeding and scores on the mental development index
of the Bayley Scales at 1 and 2 years.
Source: Morrow-Tlucak, M. "Breast Feeding and
Cognitive Development During the First 2 years of Life. "Soc Sci Med, 1988.
In 771 low-birth-weight infants, babies whose mothers chose to provide breastmilk had
an 8-point advantage in mean Bayley's mental developmental index over infants of mothers
choosing not to do so.
Source: Morley,R., "Mothers Choice to provide Breast Milk and
Developmental Outcome." Arch Dis Child, 1988.
c. Social Development
The psychomotor and social development of breastfed babies clearly differs from that of
bottle-fed ones and leads at the age of 12 months to significant advantages of the
psychomotor and social capabilities.
Source: Baumgartner, C., "Psychomotor and Social
Development of Breast Fed and Bottle Fed babies During their First year of Life". Acta Paediatrica Hungarica, 1984.
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