Retirees may need more money than previously expected in order to cover all their health care costs, according to a supplemental study released Thursday by Fidelity Investments.

For long-term care - such as extended stays in nursing homes - the study found that a 65-year-old couple would need to spend $85,000 on average. This $85,000 is in addition to the estimated $225,000 in savings retirees would also need for various healthcare needs, according to previous study Fidelity released in March.

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