After cardiovascular disease, cancer is the second leading cause of death in North America. Scientific investigations in the past few decades have shown that around 90% of cancers are due to environmental risk factors such as nutrition, occupation, lifestyle, etc.

In general, nutrition plays a major etiologic role, with about 35% of cancer incidence and mortality being due to improper dietary habits. The assessment of diet and its relationship to chronic diseases such as cancer is complicated by exposure time.

 

Cancer etiology on squidoo

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