21 Cancer Causing Foods Proven To Kill You! Avoid These Cancer Foods!br br 21 Cancer Causing Foods Proven To Kill You! Avoid These Cancer Foods!br br Cancer is the major cause of most deaths worldwide. This is quite alarming for people who are exposed to cancer-inducing environments. Some causes of this disease include the sun, pollution, second-hand smoke, stress, etc. Recent studies have shown that even popular foods can trigger it.