As a result the net national debt (debt held by the public) will more than double to 90% by 2020 from 40% in 2008.

WSJ: David Ranson: The Revenue Limits of Tax and Spend

If we want to understand the true burden of health entitlements, we need to account for not only what we spent on them directly, but also the fair share of net interest payments on the national debt attributable to these same entitlements.

FORBES: The Hidden Costs of Health Entitlements are Growing at Triple the Rate of Health Entitlements