Having a health insurance plan with a high deductible could not only cost you—it could also kill you. A new study in JAMA Network Open found that people who faced those high out-of-pocket costs as well as a cancer diagnosis had worse overall survival and cancer-specific survival than those with more standard health plans. The issue is particularly critical right now for people who have insurance plans through the Affordable Care Act marketplace. Without those credits, monthly premiums for ACA plans have, on average, more than doubled. Risky plansBased on previous data, such high out-of-pocket costs are known to lead people to delay or decrease health care—they may skip doctor visits, put off diagnostics, and avoid treatments.