Nomesorah – what truth am i not following? We’re not achrai to delve into how the environment can be damaged. We’re commanded to investigate and guard our health, and even then, there is an approach to not investigating…some things are better left samui min ha’ayin, and hezek won’t come from it. Rav moshe said that about dor yeshorim, not as a ruling against it, but as an idea to not require it. He did not use their services, nor does his family.
And yes, reality is determined by the pesukim and even by what chazal say. We go to doctors because the Torah says we can wnd ahould.
Remember besulim chozrim?