En los países desarrollados, los factores dietéticos se sitúan en el segundo lugar –tras el tabaco- entre los implicados en el cáncer. Los autores del trabajo de "The Lancet", de la Cancer Research UK Epidemiology Unit de Oxford (Reino Unido), citan distintos tipos de neoplasias asociadas a factores dietéticos. Por ejemplo, señalan que la obesidad incrementa el riesgo de cáncer de esófago, colon, mama, endometrio y riñón. El consumo excesivo de alcohol puede causar cáncer de la cavidad oral, laringe, faringe, esófago e hígado.
Los autores comentan que, a pesar de la extensa investigación realizada en los últimos 30 años, se han establecido pocos factores dietéticos determinantes del riesgo de cáncer, incluso para tumores como los colorrectales, sobre los que la dieta ejerce probablemente gran influencia, a juicio de la mayoría de expertos.
Webs Relacionadas
The Lancet
http://www.thelancet.com/
Cancer Research UK Epidemiology Unit
http://www.cancerresearchuk.org/
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