Send a tax-deductible donation to The Obesity Society and help fight obesity through essential research and support programs. When you make a donation to TOS, you are helping to advance the science-based understanding of the causes, consequences, prevention and treatment of obesity to improve the lives of those affected. When you donate, 89.6% of your funds go directly to obesity research and programs. 


Fund grants and awards

Through the generosity of your contributions to The Obesity Society we are able to:

  • Recognize achievements and present awards, such as the Ethan Sims Young Investigator Award
  • Fund research and travel grants such as the Pat Simons Travel Grant and Early Career Research Grants

A contribution of any size allows us to continue working in obesity research, prevention and treatment.


Donate Online

Our online donation form is fast, easy and secure.

Donate by Phone


Donate by Mail

Send a check to:

The Obesity Society
1110 Bonifant Street
Suite 500
Silver Spring, MD 20910


Fund a membership

TOS also offers the opportunity to fund a membership for a student, early career investigator or obesity professional. For as little as $30.00, you can contribute to the backbone of the Society. To get started, simply enter the online donation portal here. Once in the portal, select the box to donate $30 for student membership, $90 for early career membership or $240 for regular membership, and fill in the details for the person you are gifting the membership to under the "Tribute" criteria, along with your personal message to the recipient.


Already donated? Tell everyone how you are paying it forward by tagging @ObesitySociety on Twitter and @The Obesity Society on Facebook. 


The Obesity Society is a not-for-profit 501(c)(3) organization.
Our federal tax ID number is 54-1438429.