The national data show that the life years lost among women diagnosed with breast cancer are greater for younger women than those diagnosed at older ages. This makes good sense. In addition, obese women with breast cancer had greater loss of life than non-obese women. For example, women who were obese and diagnosed with breast cancer before age 50 lost on the average 9.8 years compared to non-obese women who lost 7.8 years. For women diagnosed after age 70 obese women lost approximately 5 years and the nonobese 3.7 years. This pattern was also seen in analysis of African American women.
Choosing measures for evaluation of population level health remains an area that the National Academy of Sciences continues to address. They have recommended life expectancy and quality of life as appropriate measures for population health. This report, evaluating life years lost associated with breast cancer applies this framework. The data clearly support a greater emphasis on the prevention and control of obesity given its impact on this the second most common cause of cancer mortality in women.