Study Links Bread, Kidney Cancer Risk
Those Without the Cancer Eat More Vegetables, Less Bread
Oct. 20, 2006 -- An Italian study shows that people with renal cell
carcinoma, the most common type of kidney cancer, may eat more bread and fewer
vegetables than those without kidney cancer.
But the study, published online in the International Journal of
Cancer, doesn't claim bread causes kidney cancer.
The researchers included Francesca Bravi, MD, of the Istituto di Ricerche
Farmacologiche "Mario Negri" in Milan.
Between 1992 and 2004, Bravi's team interviewed 767 patients with renal cell
carcinoma at Italian hospitals. They also interviewed 1,534 patients without
Patients completed surveys about their diets during the previous two years.
The questions covered 78 foods and beverages.
The findings show renal cell carcinoma patients were more likely than those
without kidney cancer to have the highest intake of bread, and, to a lesser
extent, pasta and rice.
People without renal cell carcinoma were more likely to eat the greatest
amount of vegetables, poultry, and processed meats.
The researchers found no association between renal cell carcinoma and
coffee, tea, soups, eggs, red meat, fish, cheese, potatoes, fruit, desserts, or
The results take into account other factors, such as family history of
kidney cancer, smoking, and alcohol use.
However, the study doesn't prove any particular dietary pattern causes or
prevents renal cell carcinoma.
Doctors are often unable to explain exactly why one person gets cancer and
The researchers speculate that "a diet rich in refined cereals and poor
in vegetables may have an unfavorable role on RCC [renal cell