The study looked at 2,546 men who were diagnosed with prostate cancer during a 24-year follow-up.
Men who were overweight or obese were significantly more likely to die from their prostate cancer then men of normal weight.
Men with both high C-peptide concentration and high BMI were four times more likely to die from prostate cancer.
The researchers, from the University of Harvard in Boston and McGill University in Montreal, conclude that the findings provide ‘further impetus for men to avoid becoming overweight.’
The Lancet Oncology Online 2008
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