Mary, not pictured, doesn't think she'll ever be able to retire.
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- Mary, a 68-year-old, must keep working after a pancreatic cancer diagnosis.
- She faces reduced Social Security benefits because her previous employer paid into a pension.
- Older Americans increasingly work into their retirement years, burdened by medical debt.
Mary, 68, originally thought she'd be able to retire as early as 2023 — but no later than 2025. Then came the diagnosis: She had pancreatic cancer.