I would look at other fields of medicine, e.g. research around how certain diets and fasting protocols can reverse metabolic syndrome and type-ii diabetes along

I would look at other fields of medicine, e.g. research around how certain diets and fasting protocols can reverse metabolic syndrome and type-ii diabetes along with a variety of other positive health benefits. So what is a major focus of research? Finding ways to isolate/synthesize specific compounds to make a patentable drug that can be given in lieu of patients making lifestyle changes, because a) you can't patent a lifestyle change and put it in a pill and make billions of dollars off it and b) because patients are generally assumed to be unwilling/unable to make the lifestyle changes. So, "how would this help a doctor treat a mental health patient?" is perhaps the wrong question, because it won't because the doctor isn't interested or trained nor has the time to guide a person through a lifestyle change. It nonetheless may be very relevant to you in deciding whether you'd rather be on insulin for the rest of your life vs. finding a way to lose weight. Just as it may be helpful for you to consider whether makes changes to lower/resolve sources of stress and anxiety in your life is a better option for managing mental distress than being on an SSRI/benzo indefinitely. I wouldn't hold my breath waiting for the AstraZeneca "how to be happy without psychopharmaceuticals" guide to living.