When her leg became swollen and hot, she knew what to do because she had a history of blood clot problems. She went to the ER.

She didn't have the money to pay the medical bill. She had no health insurance. She said she has always been financially challenged. I was a single parent.

A workplace accident severely injured her leg when she was working as a part-time cargo agent. Most of the medical costs were paid for by workers' compensation. She had thousands of dollars in additional medical debt and still hadn't paid her E.R. bill.

With some older people finding themselves unable to dig out from debt, such dilemmas threaten any notion of a comfortable retirement and have caused alarm among economists and other researchers

It is a dark cloud over your head. Some people are very rude when they call you. You don't want to call. She worried that she wouldn't be able to access medical care if she needed it because of her debts.

According to researchers at the Urban Institute, indebted older adults fare worse on a range of health measures, including fair or poor self-rated health, depression, inability to work, and impaired ability to handle everyday activities.

People in debt are more likely to have had two or more doctor-diagnosed illnesses, including hypertension, diabetes, cancer, heart attacks and strokes.

According to a senior research associate at the institute, there seems to be a correlation between certain types of debts.

He said that debt is a good thing. It can build up wealth over time.

Older adults tend to have less debt than younger people because they tend to have less debt as they get older. Each group of seniors has been more indebted than the last.

Annamaria Lusardi is an economist at the George Washington University. They are carrying high cost debt. Debt Collectors are contacting them. They are not going to have a good time.

Forty percent of Americans over the age of 55 had debt in 1998, according to data from the national Health and Retirement Study. 59 percent had debt and more of it, with a median of $62,782.

The proportion of debt that was 30 percent of assets had risen to 45 percent and the proportion that was 80 percent had risen to 15 percent.

According to the Boston College Center for Retirement Research, senior citizens with debt are more likely to have health problems.

Mortgages and other home loans are backed by the house. Real estate prices went up and interest rates went down, which led to a rise in such debt among older borrowers. The traditional model of paying off your mortgage before you retire is no longer the norm.

Unsecured debt, such as credit card balances, student loans and medical payments, are more harmful to health than secured debt. The proportion of older adults' debt that was not secured increased from 24 percent in 1998 to 35 percent in 1996.

The limitations in a person's ability to perform activities of daily living were only slightly higher for people carrying secured debt than for people without debt. The people with the most debt were more likely to need assistance.

Their risks went up as the level of debt increased. If they owed 30 percent of their assets, they were more likely to have trouble with daily activities than if they had no debt at all. Health problems had similar associations with debt.

Unsecured debt has an impact. Dr. Mudrazija doesn't know how debt affects health. The relationship can work in the other direction if people with poor health need to borrow more.

He said that secured debt is a plan. I decided to purchase a house. It is a well thought out decision.

He said thatUnsecured debt can come as a surprise. You have to live off a credit card because you lost a job. You have a big hospital bill. It is possible that the shock and stress will lead to a decline in health.

Even in a relatively high-income group of 51- to 61-year-olds with an average household income of $103,000, almost one-quarter reported being contacted by someone. Dr. Lusardi was surprised. People should be at the peak of their wealth before they retire.

Older people with less income and education are at greater risk of being pressured.

Dr. Mudrazija and Dr. Butrica documented the discrepancy. Older people pay off their mortgage in ZIP codes where people are better off. People with less money carry debt indefinitely. They are more at risk of being taken advantage of.

Seniors might be able to avoid these credit traps if they had more comprehensive health insurance and higher incomes. According to a study by The Commonwealth Fund, one-fifth of Medicare beneficiaries over the age of 65 paid more than the premiums themselves.

Employers are more likely to emphasize retirement savings than debt management when it comes to financial literacy training. She said that some borrowers don't grasp the basics.

She said that it was easy to borrow. People need to be helped to make good decisions.

Dr. Mudrazija said that reining in predatory lending practices could reduce high levels of debt.

A call came in last fall. She had an outstanding emergency room debt of $2,728.50 that was erased by the nonprofit RIP Medical Debt. She said she was so thankful.

Ms. Revel is protected from most future medical debt thanks to Medicare and Medicaid. She has three months left to pay her car payments.

She still owes a group of people money. She will be almost 80 when she pays it off.