Introduction: In 1900, life expectancies at birth in the United States were 47 years for white men, 40 for white women, 32 years for black men, and 34 years for black women. Within a century, the figures had changed to 73 and 79 for white men and women, 64 and 74 years for black men and women, respectively. In your groups, discuss the following:

To what do you attribute the increased life expectancies?

In what way(s) has medical science contributed to this change?

How can you explain the differences in the life expectancies of racial groups?