In our practice, the Half Hour Diet works pretty well, but it is unclear to what extent that success depends on the enthusiasm of the briefing physician, the strength of the physician-patient relationship, or the motivation of patients actively seeking help. Some never try the diet.
The Half Hour Diet is really not a diet at all but a control strategy that allows natural feedback to assist your own motivation. Some need a new diet, because poor food choices do matter. But for most of our patients, drastic dietary change appears unnecessary because most are simply eating too much of a good thing.