Suffering as I do from bad lungs I recently attended a rehabilitation course at Papworth Hospital. We had a talk from the Hospital dietician which consisted of "you will worship the great god the BMI". If over, then diet if you're under then eat fried food etc. When I pointed out that I was under weight because of muscle wastage and all that eating fried foods etc would do is make me put the weight back on as fat which is unhealthy, all I got was a mumble about needing protein and the subject was changed rapidly.