People can be healthy at just about any weight, but there is no weight level that is healthy with an eating disorder. Furthermore, fat-shaming is a very unhealthy thing to put someone through, and does not help anyone deal with weight or body issues.
While there are many aspects of mental illness or injury that we can usefully learn to manage and to cope with, we may still have feelings, reactions, thoughts, and behaviors we would rather not have. We may have internalized harsh or destructive judgments about those symptoms.
It is useful to cultivate an attitude of compassionate acceptance not only for the struggles of others, but also for our own struggles. When we first realize just how many aspects of life have been affected by mental illness, it can be overwhelming. It is also a chance to forgive ourselves and remember that we do not have to do everything “right” to have value as a human being.
This very useful post describes some of the unexpected ways mental illness may show up in everyday life, in things that we often criticize in ourselves or others: