Article by Aditi Miscall
No area of oncology is more complex and controversial than the relationship of cancer and diet. Everyone would like to believe that there is some diet which can substantially affect the likelihood of cancer, or better still to cure it once contracted. But to date, the evidence of the effect of diet is unclear and often inconsistent.
All reputable sources agree that no diet outright cures cancer. Nor is there strong evidence to support the view that any particular diet prevents contracting it. But there are many studies that suggest that occurrence, recurrence and survivability may be affected by the foods we choose.
Though far from certain, many studies examined by researchers at Cornell University were able to correlate lower death rates – an increased five or ten year survivability, with certain dietary choices.
In one study examined (the Nurses Health Study), 1,982 women who had already developed breast cancer were followed for an average of 13 years. Over 1,200 had cancers that had not metastasized (spreading of a primary tumor to other areas producing secondary tumors of the same type). Survival rates of cancer patients whose disease has spread are known to be much lower (21% five-year survival, as contrasted to 86% for those whose cancer has not metastasized).