EX-99.1

(For Immediate Release)

UNITEDHEALTH GROUP TO HOST INVESTOR CONFERENCE

MINNETONKA, MINN. (November 28, 2011) – UnitedHealth Group (NYSE: UNH) will host its annual Investor Conference with analysts and institutional investors in New York City on Tuesday, November 29, 2011, beginning at 8:00 a.m. EST. At the meeting, senior leaders will discuss the Company’s performance and outlook, including reviewing business trends and specific initiatives related to its various business units.

The Company will host an audio webcast of the presentation and management question and answer portions of this meeting and will make conference materials available on its investors page at www.unitedhealthgroup.com. A replay of the conference will be available on the Company Web site through December 14, 2011.

In conjunction with the meeting, the Company will affirm its previous outlook for 2011 net earnings of $4.52 to $4.57 per share. Management will discuss its 2012 financial outlook, which includes revenues of $107 billion to $108 billion and net earnings of $4.55 to $4.75 per share. The 2012 outlook does not reflect the pending acquisition of XLHealth Corp. or include any estimate of costs pertaining to the Penn Treaty matter.

About UnitedHealth Group
UnitedHealth Group (NYSE: UNH) is a diversified health and well-being company dedicated to helping people live healthier lives and making health care work better. With headquarters in Minnetonka, Minn., UnitedHealth Group offers a broad spectrum of products and services through two distinct platforms: UnitedHealthcare, which provides health care coverage and benefits services; and Optum, which provides information and technology-enabled health services. Through its businesses, UnitedHealth Group serves more than 75 million people worldwide. For more information, visit UnitedHealth Group at www.unitedhealthgroup.com.

Forward-Looking Statements
This press release may contain statements, estimates, projections, guidance or outlook that constitute “forward-looking” statements as defined under U.S. federal securities laws. Generally the words “believe,” “expect,” “intend,” “estimate,” “anticipate,” “plan,” “project,” “should” and similar expressions identify forward-looking statements, which generally are not historical in nature. These statements may contain information about financial prospects, economic conditions and trends and involve risks and uncertainties. We caution that actual results could differ materially from those that management expects, depending on the outcome of certain factors.

Some factors that could cause results to differ materially from the forward-looking statements include: our ability to effectively estimate, price for and manage our medical costs, including the impact of any new coverage requirements; the potential impact that new laws or regulations, or changes in existing laws or regulations, or their enforcement or application could have on our results of operations, financial position and cash flows, including as a result of increases in medical, administrative, technology or other costs resulting from federal and state regulations affecting the health care industry; the impact of any potential assessments for insolvent payers under state guaranty fund laws; the ultimate impact of the Patient Protection and Affordable Care Act, which could materially adversely affect our financial position and results of operations through reduced revenues, increased costs, new taxes and expanded liability, or require changes to the ways in which we conduct business or put us at risk for loss of business; uncertainties regarding changes in Medicare, including potential changes in risk adjustment data validation audit and payment adjustment methodology; potential reductions in revenue received from Medicare and Medicaid programs; failure to comply with restrictions on patient privacy and data security regulations; regulatory and other risks and uncertainties associated with the pharmacy benefits management industry; competitive pressures, which could affect our ability to maintain or increase our market share; the potential impact of adverse economic conditions on our revenues (including decreases in enrollment resulting from increases in the unemployment rate and commercial attrition) and results of operations; our ability to execute contracts on competitive terms with physicians, hospitals and other service professionals; our ability to attract, retain and provide support to a network of independent third party brokers, consultants and agents; events that may negatively affect our contracts with AARP; increases in costs and other liabilities associated with increased litigation, government investigations, audits or reviews; the performance of our investment portfolio; possible impairment of the value of our intangible assets in connection with dispositions or if future results do not adequately support goodwill and intangible assets recorded for our existing businesses or the businesses that we acquire; increases in health care costs resulting from large-scale medical emergencies; failure to maintain effective and efficient information systems or if our technology products do not operate as intended; misappropriation of our proprietary technology; our ability to obtain sufficient funds from our regulated subsidiaries to fund our obligations; the potential impact of our future cash and capital requirements on our ability to maintain our quarterly dividend payment cycle; failure to complete or receive anticipated benefits of acquisitions; potential downgrades in our credit ratings; and failure to achieve targeted operating cost productivity improvements, including savings resulting from technology enhancement and administrative modernization.

This list of important factors is not intended to be exhaustive. A further list and description of some of these risks and uncertainties can be found in UnitedHealth Group’s reports filed with the Securities and Exchange Commission from time to time, including the cautionary statements in our annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. Any or all forward-looking statements we make may turn out to be wrong. You should not place undue reliance on forward-looking statements, which speak only as of the date they are made. We do not undertake to update or revise any forward-looking statements.

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