. Privacy Policy & Security

This Privacy Policy applies to the Medifast1.com website, information as provided by Medifast, Inc. and its subsidiaries. Within this privacy policy, the name "Medifast1.com" pertains to any and all websites hosted and/or operated by Medifast, Inc., including co-branded, product and divisional websites.

The Medifast1.com website contains links to other sites. Once you enter another website, be aware that Medifast1.com is not responsible for the privacy practices of such other sites. We encourage you to look for and review the privacy statements of each and every website that you visit through a link on Medifast1.com. We hope that reading our Privacy Policy gives you a clear idea of how we manage information about you.

While you may use some of the functionality of Medifast1.com without registration, many of the specific tools and services on our website require registration. If you use our website without registering, the only information we collect will be Non-Personal Information through the use of Cookies or Web Beacons. If you choose to register with our website for certain services, we require you to submit Personally Identifiable Information. Depending on the tool or service you have selected, we may also collect Personal Health Information. You are responsible for ensuring the accuracy of the Personally Identifiable Information and Personal Health Information you submit to Medifast1.com. Inaccurate information will affect the information you receive when using our site and tools and our ability to contact you as contemplated in this Privacy Policy. For example, your email address should be kept current because that it is how we communicate with you.

Even if you do not register with Medifast1.com, we collect Non-Personal Information about your use of our website, special promotions and newsletters.


A. Cookies
We collect Non-Personal Information about your use of our website and your use of the websites of selected sponsors and advertisers through the use of Cookies. Medifast1.com assigns every computer a different Cookie. The information collected by Cookies (i) helps us dynamically generate advertising and content on web pages or in newsletters, (ii) allows us to statistically monitor how many people are using our website and selected sponsors' and advertisers' sites, (iii) how many people open our emails, and (iv) for what purposes these actions are being taken. We may use Cookie information to target certain advertisements to your browser or to determine the popularity of certain content or advertisements. Cookies are also used to facilitate a user's log-in, as navigation aides and as session timers, but not to retain Personal Health Information about you. Cookies used by Medifast1.com are also used to restrict underage use of the tools.

Your browser software can be set to reject all Cookies. Most browsers offer instructions on how to reset the browser to reject Cookies in the "Help" section of the toolbar. If you reject our Cookies, certain of the functions and conveniences of our website may not work properly but you do not have to accept our Cookies in order to productively use our site. We do not link Non-Personal Information from Cookies to Personally Identifiable Information without your permission and do not use Cookies to collect or store Personal Health Information about you.

We and our service providers also use cookies to collect information from you over time and across this and other websites to provide you with and improve the performance of our advertising that our service providers deliver to you on other websites. If you wish to opt out of the use of data collected on our site to send you targeted Medifast advertising during your visits to other websites, click on these three links: (1) DAA Opt-Out; (2) Struq Opt-Out; (3) TruEffect Opt-out.

B. Web Beacons

We also may use Web Beacons to collect Non-Personal Information about your use of our website and the websites of selected sponsors and advertisers, and your use of special promotions or newsletters. The information collected by Web Beacons allows us to statistically monitor your usage of our websites.

Our Web Beacons are not used to track your activity outside of our websites. We do not link Non-Personal Information from Web Beacons to Personally Identifiable Information without your permission and do not use Web Beacons to collect or store Personal Health Information about you.

C. Third-Party Web Beacons

We use third-party web beacons from Yahoo! to help analyze where visitors go and what they do while visiting our website. Yahoo! may also use anonymous information about your visits to this and other websites in order to improve its products and services and provide advertisements about goods and services of interest to you. If you would like more information about this practice and to know your choices about not having this information used by Yahoo!, click here.


We collect Personally Identifiable Information that you provide to us when you register as a member of Medifast1.com and/or when you update your member profile. We use the Personally Identifiable Information that you provide to respond to your questions, provide you the specific services you select, send you emails about website maintenance and updates, and inform you of significant changes to this Privacy Policy.


A. Emails You Send to Medifast1.com
This Privacy Policy does not protect you when you send content, business information, ideas, concepts or inventions to Medifast1.com by email. If you want to keep content or business information, ideas, concepts or inventions private or proprietary, do not send them in an email to Medifast1.com. We try to answer every email within 48 business hours, but are not always able to do so.

B. Website Registration and Interactive Tools on Medifast1.com
After you have registered as a member of Medifast1.com, you may choose to use certain interactive content, tools and services that may ask you to voluntarily provide other types of information about yourself including Personal Health Information.

C. Children
We are committed to protecting the privacy of children. We do not collect Personally Identifiable Information from any person we actually know is under the age of 13. A parent or guardian is solely responsible for providing supervision of the minor's use of Medifast1.com. The parent or guardian assumes full responsibility for ensuring that the registration information is kept secure and that the information submitted is accurate. The parent or guardian also assumes full responsibility for the interpretation and use of any information or suggestions provided through Medifast1.com for the minor. Medifast1.com does not sell products for purchase by children. We sell children's products for purchase by adults. If you are under 18, you may use Medifast1.com only with the involvement of a parent or guardian.

D. Market Research
From time to time the Medifast1.com marketing department, or operations contractors acting on its behalf, may conduct online research surveys in order to gather feedback about our site through email invitations, pop-up surveys or online focus groups. When participating in a survey, we may ask you to submit Personally Identifiable Information. This Personally Identifiable Information is used for research purposes, and is not used for sales solicitations. When a third party sponsors a survey, Aggregate Information of the survey results is reported to the sponsor. Aggregate data does not contain any information that could be used to contact or identify you. Personally Identifiable Information collected through market research will only be used by Medifast1.com and its operations contractors and will not be given or sold to a third party without your consent.

Except as set forth in this Privacy Policy or as specifically agreed to by you, Medifast1.com will not disclose any Personally Identifiable or Personal Health Information it gathers from you on our website. We will only release Personally Identifiable or Personal Health Information to third parties: (1) to comply with valid legal requirements such as a law, regulation, search warrant, subpoena or court order; or (2) in special cases, such as a physical threat to you or others. In the event that we are legally compelled to disclose your Personally Identifiable or Personal Health Information to a third party, we will attempt to notify you unless doing so would violate the law or court order. In addition, we may disclose Personal Information as described below.


Medifast1.com operations and maintenance contractors sometimes have limited access to your Personally Identifiable Information in the course of providing products or services to Medifast1.com. These contractors include vendors and suppliers that provide us with technology, services, and/or content related to better operation and maintenance of our website. Access to your Personally Identifiable Information by these contractors is limited to the information reasonably necessary for the contractor to perform its limited function for Medifast1.com. We also contractually require that our operations and maintenance contractors:

  1. protect the privacy of your Personally Identifiable Information consistent with this Privacy Policy

  2. not use or disclose your Personally Identifiable Information for any purpose other than providing us with products and services

Listed below are some of the security procedures that Medifast1.com uses to protect your privacy:

  • Requires both a personal username and a password in order for users to access their Personally Identifiable Information or Personal Health Information.

  • Uses firewalls to protect information held in our servers.

  • Utilizes encryption in transmitting Personally Identifiable Information to our servers.

  • Closely monitors the limited number of Medifast1.com employees who have potential access to your Personally Identifiable Information.

  • Requires all Medifast1.com employees to abide by our Privacy Policy and be subject to disciplinary action if they violate it.

  • Backs-up our systems to protect the integrity of your Personally Identifiable and Personal Health Information.

  • Provides secure messaging within the Medifast1.com so that information related to your personal health is sent through a secure, encrypted connection.

  • All credit card transactions are processed through Verisign. Your information is encrypted via a "key" encryption and decoded at Verisign, which allows them to process and authorize your information.

Despite Medifast1.com's efforts to protect your Personally Identifiable Information and Personal Health Information, there is always some risk that an unauthorized third party may find a way around our security systems or that transmissions of your information over the Internet will be intercepted.




A. Updating Your Personally Identifiable Information
Medifast1.com pages that collect and store self-reported data allow you to correct, update or review information you have submitted by going back to the specific page, logging-in and making the desired changes.


B. Removing your Personal Information
If you have a complaint or problem, including removing your information from our systems, please email us at info@medifastdiet.com. Our customer service department will forward your complaint to the appropriate internal Medifast1.com department for a response or resolution. We try to answer every email within 48 business hours, but may not always able to do so. If you do not receive adequate resolution of a privacy related problem, you may write to Medifastdiet.com at:

Medifast, Inc.
Attn: Webmaster/Marketing
11445 Cronhill Drive
Owings Mills, MD 21117

C. Limitations on Removing or Changing Information
Upon your request, we will delete your Personally Identifiable or Personal Health Information from our active databases and where feasible from our back-up media. You should be aware that it is not technologically possible to remove each and every record of the information you have provided to Medifast1.com from our servers.

D. Opt-in
You can opt-out of some analytic collection by telling us to place a "Restricted Collection" cookie on your computer (click to do that).


Medifast1.com retains the right to update this privacy policy at its general discretion according to the needs of the business, its consumers or in accordance with the mandates of federal and state law.

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Medifast, Inc., Health & Wellness, Owings Mills, MD HACKER SAFE certified sites prevent over 99.9% of hacker crime.Medifast makes no claim that these results are representative of all participants on the Medifast Program. Medifast recommends you consult with a physician before starting a weight-loss program. Medifast is the brand recommended by more than 20,000 doctors since 1980.

Davis, L.M., Coleman, C.D., Kiel, J., Rampolla, J., Hutchisen, T., Ford, L., Andersen, W.S., Hanlon-Mitola, A. (2010). Efficacy of a meal replacement diet compared to a food-based diet after a period of weight loss and weight maintenance: a randomized controlled trial. Nutrition Journal, 9(11). View Study