Which is the largest contributor to the formation of cancer?

Tobacco smoking is overwhelmingly the most significant risk factor for cancer and across the board for chronic diseases. Diet, exercise, and alcohol use also cut across the diseases, and they are significant contributors to cancer, but more significant to other conditions.

Explanation:

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by going smokefree, you could improve the well-being of your friends, family, coworkers, and even your pets. here’s how the cigarettes you smoke affect the people around you.