What statement about noncommunicable diseases is correct? a. noncommunicable diseases are caused by pathogens and spread from person to person. b. noncommunicable diseases are caused by pathogens and do not spread from person to person. c. noncommunicable diseases are not caused by pathogens and do not spread from person to person.

Life expectancy in the united states is (76.4 for men and 81.1 for women). life expectancy is not the same as healthy life expectancy. healthy life expectancy is the number of years a person is expected to live in this number is obtained by subtracting years spent in poor health from overall life expectancy. the world health organization (who) calculates healthy life expectancy in 194 countries. the united states ranks twenty-ninth in the world using this measurement, with an average of of healthy life expectancy. singapore ranks number one (76 years), and japan is number two (75 years).