Well I suppose it depends on what one assume to be a reliable source. It is indeed astonishing to find so many claims by doctors that they can heal people from

Well I suppose it depends on what one assume to be a reliable source. It is indeed astonishing to find so many claims by doctors that they can heal people from dreadful diseases with simple life style tips and natural products. I think specifically of extraordinary claims that are contrary to the medical consensus: heal people of metastatic cancer, reverse diabetes, reverse ALS, etc.. Personally I do not trust such doctors, there are too many of those who had later died from cancer themselves! But ultimately it is a personal choice to find which criterias could be used to evaluate risks.