Life expectancy has signifi cantly increased
from 49 years in 1901 to 77.9 years in 2007. According
to the U.S. Census Bureau, the number of
elderly individuals over age 65 is expected to double
from 35 million to nearly 70 million by 2025,
which is when the youngest baby boomers retire.
This trend is global, so the worldwide population
over age 65 is expected to more than double from
357 million in 1990 to 761 million in 2025. These
statistics underscore the need for more scalable and
affordable health care solutions.