Sometimes it's hard to retrieve old articles.  I have loved this one for a 
long time and wanted to make sure you all have it in your files.

Jay


      
TITLE:  Unilateral breast-feeding and breast cancer.
AUTHORS:    Ing R; Petrakis NL; Ho JH
SOURCE:     Lancet 1977 Jul 16;2(8029):124-7.
CITATION IDS:   PMID: 69205 UI: 77211568
ABSTRACT:   Women of fishing villages in Hong Kong by custom breast-feed with 
only the right breast. The hypothesis that the unsuckled breast may have an 
altered risk of cancer development was investigated. Records of the 
radiotherapy divisions in Hong Kong between 1958 and 1975 were searched, and 
breast-cancer patients were interviewed for a detailed history of lactation. 
The overall left/right ratio of cancer in the breasts of 2372 women with 
unilateral breast carcinoma was 0-97, indicating that breast cancer was 
equally distributed between the two sides. Of 73 patients with a history of 
exclusively one-sided breast-feeding, 27 of 34 patients aged 55 or over 
(79-4%) and 19 of 39 patients under age 55 (48-7%) had a carcinoma in the 
unsuckled breast. Comparisons of patients who had nursed unilaterally with 
nulliparous patients and with patients who had borne children but had not 
breast-fed indicated a highly significant increased risk of cancer in the 
unsuckled breast. No statistically significant differences in laterality of 
breast cancer were found in 52 patients who had for convenience nursed to a 
greater extent from one side than the other. This study indicates that in 
post-menopausal women who have breast-fed unilaterally, the risk of cancer is 
significantly higher in the unsuckled breast and that breast-feeding may help 
to protect the suckled breast against cancer.
MAIN MESH HEADINGS:     *Breast Feeding
Breast Neoplasms/*etiology 
ADDITIONAL MESH HEADINGS:   Adult
Age Factors
Breast Neoplasms/epidemiology
Comparative Study
Cultural Characteristics
Female
Hong Kong
Human
Lactation
Menarche
Middle Age
Parity
Pregnancy
Risk
Rural Health
Support, U.S. Gov't, P.H.S.
1977/07
1977/16 
PUBLICATION TYPES:  Journal Article 
LANGUAGES:  eng 

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