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Helping Your Child Who Has Challenges with Weight with Aaron Kelly, PhD. Streaming LIVE on Thursday, September 22nd at 7 pm ET

Childhood Obesity Awareness Month

This Childhood Obesity Awareness Month, help the OAC put an end to childhood obesity bullying.

Check Out OAC's NEW Resource Library!

Our resource library offers quality, science-based information on obesity, treatment, nutrition, exercise & much more! Explore hundreds of topics to help YOU on your journey with weight and health!

Welcome to the OAC!

Formed in 2005, the Obesity Action Coalition (OAC) is the nation’s leading grassroots obesity organization with the mission to elevate & empower people affected by obesity through education, advocacy, awareness, & support.

The Obesity Action Coalition, OAC, is a national nonprofit organization dedicated to giving a voice to the millions of Americans affected by the disease of obesity and empowering them along their journey toward better health.


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Together We Are Making A Difference.

Since its inception in 2005, the OAC has grown to be the nation’s leading voice on obesity. Today, we’re a more than 70,000 member-strong national nonprofit focused on:

  • Raising awareness and improving access to prevention and treatment of the disease of obesity
  • Providing evidence-based education on obesity and its treatments.
  • Fighting to eliminate weight bias and discrimination.
  • Elevating the conversation of weight and its impact on health.
  • Offering a community of support for people affected.

Your support fuels our mission. When you participate, advocate and donate, you help us to create a better world for the more than 93 million Americans affected by the disease of obesity. With your help, we can continue to elevate and empower those affected by obesity through education, advocacy and support.

Make a difference today.

Donate Today! More Ways to Give


Get Connected to OAC Today!

Sign-up to stay connected to our mission, latest news, events, ways to get involved, information and all things OAC!

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News & Events

OAC Blog

Read More in the OAC Blog

Key Dates


01sepAll Day30National Childhood Obesity Awareness Month

27sepAll Day01octWeight Stigma Awareness Week

29sep8:00 pm9:00 pmAdvocacy Town Hall: Advocacy Targeting


27sepAll Day01octWeight Stigma Awareness Week

13oct8:00 pm9:00 pmAdvocacy Town Hall: Your Voice, Your Power

27oct8:00 pm9:00 pmAdvocacy Town Hall: Overcoming Advocacy Hurdles

OAC donation hand with giftYour tax-deductible donation helps the OAC to raise awareness, advocate for improved access, provide evidence-based education, fight to eliminate weight bias and discrimination and elevate the conversation of weight and its impact on health.