Young adults between the ages of 19 and 29 are the largest and fastest-growing group without health insurance, according to a report released today by the Commonwealth Fund. A total of 13.7 million young adults lack health insurance in the U.S., an increase of 2.5 million from 2000, the report states. More than half of uninsured young adults said they have opted against receiving health care because of cost, and 46% reported that they were paying off medical debt or had difficulty paying medical bills. The authors of the report suggest the following policy changes to help uninsured young adults gain coverage: extend Medicaid and State Children's Health Insurance Program eligibility beyond the current 18-year-old age limit; allow children to be eligible for their parents' health insurance beyond age 19, regardless of student status; and have states demand that colleges and universities require students to have insurance and offer full- and part-time students health insurance.