By now everyone should have figured out that dealing with cancer is difficult. Even if the cancer is gone from the body, you are half dead from the chemo therapy. So cancer prevention should be the first priority. Many studies have shown that low NAD+ is a cause of cancer. Normalization of NAD+ prevents cancer formation and spread.
https://www.ncbi.nlm...pubmed/25453901
http://www.scripps.edu/felding/
https://www.ncbi.nlm...pubmed/28780936