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Evidence mounts for the relation of energy intake to adult malignancies
| The first 150 words of the full text of this article appear below. |
Study of the relation between human body size and
cancer risk has its origins in both human observational studies and
animal experiments. In his late 19th century treatise Air, Food,
and Exercises based on observations in England and continental
Europe Rabagliatti concluded, "Overfeeding is the predisposing cause of cancer."1 Since then the restriction of total energy
intake has been shown over decades of research to be one of the most powerful nutritional interventions capable of lowering cancer rates in
laboratory animals
and the only factor known actually to increase
lifespan in these same systems.
2 3
Such rodent experiments resulted in lighter, leaner animals
that is, with decreased body weight and adiposity
and in many instances, depending on the timing of the energy restriction, stunted growth and shortened overall animal length. Although lifelong dietary restriction has had
the greatest impact, reduced food consumption early during development
also effectively inhibits tumorigenesis.3 Human data
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