Natural therapies vs hormone therapy

I make no claim to being a medical specialist, but I do consider myself to be reasonably intelligent and open minded. The question I ask myself when it comes to all these claims regarding so-called "super foods" and this, that or the other supplement, vitamin, pill, crystals, acupuncture, channels of energy and their realignment and so on is this... If these various treatments are of such benefit..."this will boost cell growth to your healthy cells"..."this will improve your energy flow"..."this will make this that or the other super this, that, or the next thing"...and all these claims are true...who's to say that the cancer cells (any that may remain or have already formed mets), won't also benefit and become super strong, super energised and super everything else? You can't have it both ways, that your body will receive these goodies, and then dish them out thus..."One for you"...to the good cells, and "None for you" to the bad ones...? My thoughts only, and all the best to those who disagree.