*2.7. Renal Cancer*

Obesity has been associated with an increased risk of kidney malignancy. Several studies have concluded the increment of risk associated with obesity and it has been estimated that 20% of renal cancer patients were obese. The risk of kidney cancer was increased by 35% in overweight participants and by 76% in obese subjects in comparison to normal weight participants, irrespective of the gender [83]. The association is consistent in both sexes and across populations; however, no clear explanation for the pathogenesis has been found.
