Obesity almost always increases cancer risk and worsens outcomes, but researchers led by scientists at Harvard Medical School and Dana-Farber Cancer Institute report that overweight patients with advanced kidney cancer had significantly longer survival than those who were of normal weight or underweight.
Having a high body mass index is a well-established risk factor for clear cell renal cell carcinoma, the most common type of kidney cancer. (BMI is the ratio of weight in kilograms divided by the squared height in meters.