As military spending rises, a new study shows the number of Americans lacking adequate healthcare has increased by 60 percent in the last four years. According to the Commonwealth Fund, the number of American adults deemed “underinsured” rose from 16 million in 2003 to 25 million last year. Taken together with the number of uninsured, at least 75 million Americans now go without healthcare for at least part of the year. On average, healthcare premiums have risen 91 percent since 2000, compared with just a 24 percent increase in wages.