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Men who have a vasectomy have a greater risk of developing the most aggressive form of prostate cancer, a study has found.
Harvard scientists analysed the medical records of nearly 50,000 men and found that those who had the operation were 10% more likely to be diagnosed with the disease.
The study revealed a stronger link with the most serious forms of prostate cancer, with rates of advanced or lethal disease rising by 20% in men who had the procedure. The danger seemed to be highest among men who had a vasectomy before the age of 38.
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