How does the fact that the affected adult has a long-term or short-term eating disorder affect treatment?

The duration of the disorder can affect its complexity and lengthen therapy, but it is not the only factor in how quickly a case progresses toward recovery. Other factors can lead to a poor outcome, such as a lack of family support, continued exposure to stressors, or intrinsic factors specific to the individual, such as comorbidity with other mental health problems.