After cardiovascular disorders, cancer is the second leading cause of death in the world. It affects both genders, and its economic impact is greater than any other cause of death in the world. The total economic impact of premature death and disability from cancer worldwide was $895 billion in 2008. This data represents 1.5% of the worldâ€™s gross domestic product. Among the risk factors for cancer, age is one of the most important; cancer incidence and cancer-related mortality rises exponentially after 50 years of age. Due to increases in birth rate and life expectancy, the number of older individuals is currently increasing around the world. With this trend, the prevalence of cancer is likely to rise. This fact has important implications for the implementation of preventive strategies and treatment for cancer in older age groups. In older individuals, some cancers may be more aggressive or more indolent than in younger adult age groups.