However The Master Cleanse doesnt do much. All is does is gives your digestion a little rest. It is not aggressive enough to cure cancer or anything else. Cancer is extremely aggressive. You have to see a specialist and follow his instructions. It is possible that with the cleansings you have done, has put a strain on your system trying to rid itself of these poisons. Your colon, liver and eliminations may not be ridding these poisons from your system efficiently.