Anecdotal accounts on social media indicate that many individuals with pectus excavatum are dissatisfied with their bodies - not just the shape of their ribs, but also their entire body figure. Depending on severity, the indentation of the rib cage may restrict the shape of the fundus of the stomach, acting much like a gastric band would. This may result in a smaller intake of calories than normal. Additionally, depending on the rib flare, a more pronounced belly shape (a "pot belly") may result. In addition (again, depending on severity), pectus can restrict space in the chest for heart rhythm and movement, resulting in less stamina for physical exertion. Muscle structure may impact posture, which is important for lessening the severity of pectus excavatum. All of this means that both diet and exercise are important for mitigating the effects pectus excavatum. Though a specific diet is not required for improving quality of life, it's beneficial to be conscious of all of these factors. Try to elect for a diet (and lifestyle) which improves muscle function and stamina and avoid a diet which will result in lower body satisfaction.