Medifast, Inc. Added to the Russell 3000 Index

OWINGS MILLS, Md., June 30 /PRNewswire-FirstCall/ -- Medifast, Inc. (NYSE:
MED) today announced that the company was added to the broad-market Russell
3000(R) Index effective at the close of market on June 26, 2009, when Russell
Investments reconstituted its comprehensive set of U.S. and global equity
indexes. Russell Investments adjusts its indexes annually in order to
accurately rank the 3,000 largest companies in the U.S. stock market by market
capitalization.

Mr. Michael S. McDevitt, Chief Executive Officer of Medifast, Inc. commented,
"We are pleased to be included in the Russell Indexes. It is an
acknowledgment of the execution of our business plan over the past year, and
the value that has been created for our loyal shareholders."

About Medifast:
Medifast (NYSE: MED) is the leading easy-to-use, clinically proven
portion-controlled weight loss program. Medifast has been recommended by
15,000 physicians and used by over one million customers. Medifast is
committed to enriching lives by providing innovative choices for lasting
health. Medifast programs have been proven effective through studies by major
university teaching hospitals. The company sells its products and programs via
four unique distribution channels: 1) the web and national call centers, 2)
national network of physicians, 3) medically supervised Medifast Weight
Control Centers, and 4) the Take Shape For Life direct-selling division, a
network of health coaches. Medifast was founded in 1980 and is located in
Owings Mills, Maryland. For more information, log onto
http://www.ChooseMedifast.com. MED-F

Safe Harbor:
Please Note: This release contains "forward-looking statements" within the
meaning of Section 27A of the Securities Act of 1933, as amended, Section 21E
of the Securities Exchange Act of 1934, as amended, and the Private Securities
Litigation Reform Act of 1995. These forward-looking statements generally can
be identified by use of phrases or terminology such as "intend" or other
similar words or the negative of such terminology. Similarly, descriptions of
Medifast's objectives, strategies, plans, goals or targets contained herein
are also considered forward-looking statements. Medifast believes this release
should be read in conjunction with all of its filings with the United States
Securities and Exchange Commission and cautions its readers that these
forward-looking statements are subject to certain events, risks,
uncertainties, and other factors. Some of these factors include, among others,
Medifast's inability to attract and retain independent Associates and Members,
stability in the pricing of print, TV and Direct Mail marketing initiatives
affecting the cost to acquire customers, increases in competition, litigation,
regulatory changes, and its planned growth into new domestic and international
markets and new channels of distribution. Although Medifast's believes that
the expectations, statements, and assumptions reflected in these
forward-looking statements are reasonable, it cautions readers to always
consider all of the risk factors and any other cautionary statements carefully
in evaluating each forward-looking statement in this release, as well as those
set forth in its latest Annual Report on Form 10-K and Quarterly Report on
Form 10-Q, and other filings filed with the United States Securities and
Exchange Commission, including its current reports on Form 8-K. All of the
forward-looking statements contained herein speak only as of the date of this
release.

Contact: Brendan Connors Lytham Partners, LLC
Vice President - Finance Joe Diaz
ir@choosemedifast.com Robert Blum
Joe Dorame
602-889-9700

SOURCE Medifast, Inc.

Brendan Connors, Vice President - Finance of Medifast, Inc.,
ir@choosemedifast.com; or Joe Diaz, Robert Blum or Joe Dorame, all of Lytham
Partners, LLC, +1-602-889-9700, for Medifast, Inc.