There’s no guarantee that one can prevent cancer, but there’s good evidence that the some steps may help ward off the disease. At the top of the list is losing weight and maintaining a normal body mass index, between 18.5 and 24.9. Getting aerobic exercise may cut cancer risk by as much as 50%. A healthy diet is important to cancer risk reduction, because excess weight is linked to the disease, and eating unhealthy foods can add pounds quickly. Quitting smoking and limiting alcohol are also key ways to reduce risk.
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