WASHINGTON (AP) — A new government study says that federal health care and retirement programs threaten to overwhelm the federal budget and harm the economy in coming decades unless Washington finds the political will to restrain their inexorable growth. The long-term pressures promise to quickly reverse recent improvements in the deficit.

Tuesday's Congressional Budget Office report says that government spending on health care and Social Security would double relative to the size of the economy in 25 years and that spending on other programs like defense, transportation and education would decline to its smallest level by the same measure since the Great Depression.

The share of federal spending devoted to health care would rise from 4.6 percent of gross domestic product today to 8 percent in 2038; spending on Social Security would rise as well, as the number of people receiving benefits rises to more than 100 million in 25 years, compared with 57 million people taking benefits now.