Alternative treatments don’t guarantee higher success than modern medicine. However, if modern medicine puts the chance of survival at < 5%, it’s not a bad idea to try fringe approaches.
Modern science aims to create a standardized approach for categorized diseases. Controlled experiments aim to find a magic bullet, but are these experiments really “controlled”?
Everyone eats differently; everyone shits differently. Different air quality; stress levels; sleep; metabolism. Not to mention, the body and its disease are both is ever-changing systems over time. Until we have nano-machines, we won’t know the true cause and effect of all these variables.
Therefore, the holistic approach* is to use intuition, adaptation, and nonstandard ways to deal with this recognition. The downside of this approach is the amount of information and the ability to determine the credibility (eg. random social media), especially for a layman. However, if one was knowledgeable enough to read thousands of academic papers, from various fields (outside of oncology) -- one could develop a more tailored plan for the individual that accounts for these other factors.
*Holistic approach does not mean disregard of science. It does not mean rejecting standard protocols. It means that one should consider a wider-range of factors, in addition to standard protocols. It is an approach that places more value on breadth.