Cancer happens all the time and your immune system deals with it. Look into the recent evidence of how keto deals with cancer. I'm telling you, I live in a world without fear and it is awesome.
Keto helps with some cancers that are powered by glucose.
It does nothing to help with any other forms of cancer, of which there are plenty.
edit: to add clarity, I'm going to leverage full placebo and happiness to my advantage: https://pubmed.ncbi.nlm.nih.gov/12883117/
I'm refute any negative emotions as they are counter-productive. I reject fear of the unknown, and I instead believe happy thoughts.