Dairy cattle serum and milk factors contributing to the risk of colon and breast cancers.
Int J Cancer
; 137(4): 959-67, 2015 Aug 15.
Article
em En
| MEDLINE
| ID: mdl-25648405
ABSTRACT
The analysis of published epidemiological data on colon and breast cancer reveals a remarkable concordance for most regions of the world. A low incidence for both cancers has been recorded in Mongolia and Bolivia. Discrepant data, however, have been reported for India, Japan and Korea. In India, the incidence of breast cancer is significantly higher than for colon cancer, in Japan and Korea colon cancer exceeds by far the rate of breast cancer. Here, studies are summarized pointing to a species-specific risk for colon cancer after consumption of beef originating from dairy cattle. Uptake of dairy products of Bos taurus-derived milk cattle, particularly consumed at early age, is suggested to represent one of the main risk factors for the development of breast cancer. A recent demonstration of reduced breast cancer rates in individuals with lactose intolerance (Ji et al., Br J Cancer 2014; 112149-52) seems to be in line with this interpretation. Species-specific risk factors for these cancers are compatible with the transmission of different infectious factors transferred via meat or dairy products. Countries with discordant rates of colon and breast cancer reveal a similar discordance between meat and milk product consumption of dairy cattle. The recent isolation of a larger number of novel presumably viral DNAs from serum, meat and dairy products of healthy dairy cows, at least part of them infectious for human cells, deserves further investigation. Systemic infections early in life, resulting in latency and prevention of subsequent infections with the same agent by neutralizing antibodies, would require reconsideration of ongoing prospective studies conducted in the adult population.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Mama
/
Neoplasias do Colo
/
Laticínios
/
Leite
Tipo de estudo:
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Limite:
Animals
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Female
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Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
Int J Cancer
Ano de publicação:
2015
Tipo de documento:
Article
País de afiliação:
Alemanha