Earlier quoted context omitted.
On the flipside, there are also a small selection of unproven treatments that work better than standard care.
Can you share an example of an unproven treatment that works better than standard care?
Theres diet, sleep, exercise. Which require no studies to know that taking better care of yourself will help you regardless of the pathology.
Then there's the somewhat strange case of orthodontist John Mew, who advocates for setting your tongue posture to the roof of your mouth in order to close the jaw properly, to prevent standard treatment of various braces, teeth alignment issues and corrective jaw surgery.
Other strange therapies that I've come across that seem unhealthy but have some backing are intentional sleep deprivation to improve depressive symptoms. prolonged fasting to reduce scar tissue. Or one I personally use alot, extremely cold showers after allergene exposure.
There are alot of silly things the human body can do that at first glance might seem irresponsible or dangerous but are about as dangerous as people in the 1900's might imagine airplanes would be.
One more thing I might add, standard care does not mean 'in your best interest' some standard practise might be too cruel to accept, like chemotherapy. Even though its proven to extend your life, it might not be proven to be in your best interest.