To come from the point of view your, coming from you must first remove the people with mental illness that no medicine able change. You are coming from economics and lifestyle changes so to have correct stats you’d have to separate biological from social. Then theirs the people that have been living with chronic pain for years if not decades and what about the States that allow people to end their life be it cancer or other situations . There’s just no way to get the proper stats. This angel of yours doesn’t work.