A new large study led by researchers at the American Cancer Society (ACS) shows older age and smoking are the two most important risk factors associated with a relative and absolute five-year risk of developing any cancer. The findings also demonstrate that in addition to age and smoking history, clinicians should consider excess body fat, family history of any cancer, and several other factors that may help patients determine if they may benefit from enhanced cancer screening or prevention interventions. The data was published today in the journal Cancer.