The idea that we can control the size and shape of our bodies and that it is our personal responsibility to do so is a myth.  The War on Obesity has been an epic fail in a battle that shouldn't have been waged in the first place.  

There is plenty of research that shows that it is a person's health-related behaviors combined with genetics that has the biggest impact on health.  Weight is not a behavior.  Let me say it again to make sure you got it – WEIGHT IS NOT A BEHAVIOR.  It is also not a reflection of your health or worth as a human being.  

Let's face facts. We've lost the war on obesity. Fighting fat hasn't made the fat go away. And being thinner, even if we knew how to successfully accomplish it, will not necessarily make us healthier or happier. The war on obesity has taken its toll. Extensive "collateral damage" has resulted: Food and body preoccupation, self-hatred, eating disorders, discrimination, poor health… Few of us are at peace with our bodies, whether because we're fat or because we fear becoming fat.

Health at Every Size is the new peace movement.

Very simply, it acknowledges that good health can best be realized independent from considerations of size. It supports people of all sizes in addressing health directly by adopting healthy behaviors.  – An excerpt from Health at Every Size: The Surprising Truth About Your Weight by Linda Bacon, PhD.

Health at Every Size is a philosophy that focuses on taking care of our bodies and accepting the size/weight that results.  If you aren't familiar with this concept you definitely need to check it out.