Similarly, as the prudent steward of one's own body, one MUST acquaint oneself with all reasonable medical options, including inaction, before making a decision. But after evaluating all reasonable options, the Torah requires one to choose the sensible option, the one that the prudent steward would choose. Were medicine to be a monolith, with every problem having an obvious answer upon which all physicians agreed, then the individual would have little say in what medical treatments he wishes to have. All of the patient's research would necessarily lead to the same treatment option and he would be compelled to follow his physician's advice. Only the most straight-forward problems have obvious answers.
Some decisions are so obvious, that the individual really has no choice.
A person diagnosed with bacterial meningitis requires an antibiotic. Refusal to accept the medicine means almost certain death. We merely coerce him to fulfill his obligation of being the prudent steward. There are many issues to be investigated and clarified before a judicious decision can be made. Are there other reasonable options.