The fruit they are talking about is actually called "miracle berry," (Synsepalum dulcificum) . It's little red berry fruit that changes your taste receptors temporarily like for an hour or so. What ever you eat will have a sweeter taste to it, especially if sour or bitter. My work colleague had this tree in his yard and gave me some to try as my taste changed during chemo had that bitter metallic taste to most things. I tried this berry before eating and just gave a sweeter tinge to what I ate. So it's not a "miracle" cure as such for cancer patients something to help make food more tolerable to eat and variety not limited to certain foods while you on chemo.