Take a tablespoon of apple cider vinegar for the acid reflux and don't take the medications for it.
The medications neutralize your stomach acid that is needed for breaking down the food.
Then the food putrefies (rots) in your system and you don't get the nutrients that is needed because the food isn't broken down so the body can use it.
It causes problems with the digestive tract because the stuff is rotting.
Stuff like irritable bowel syndrome.
Taking a bit of apple cider vinegar gives the system the extra something that is needed for the stomach to do its job.
If your thin, it may be worth your while to do some parasite cleansing as a first step.
This ensures there are no (or fewer) critters eating up your nutrients once your on the Master Cleanse.
here is some info about what to do if hungry on the cleanse