Most underestimated but the most significant factor in Carcinogenesis is the lifestyle of the people. Many researches have already proven that, the lifestyle of a person do have a great influence in activating the Cancer genes which ultimately gives raise to the cancer cells.
Factors like diet, daily schedules, exercise and place of living do affect carcinogenesis.
According to a report from telegraph, 9 out of 10 cancers are caused by Lifestyle. This shows how important it is to have a good lifestyle to prevent cancer.