I will throw this in - fasting, if you have severe familial GERD is not only impossible, it can be dangerous. For those like me who have CAD on both sides, I'd add that I've found one thing which has made a difference. I'd tried it all, statins, diet, exercise. My CAD progressed on to a bypass, despite having excellent cholesterol, very low CRP, normal glucose, etc., etc. Then I ran across vitamin KII, citation to articles below, and started to see a real difference. Six months after the bypass, my native right coronary artery (RCA) had opened up and taken over the job of the graft. The graft withered away. Now, this artery had been a problem for years and was stented. My cardiologist once, while trying to force a stent through it called it a "concrete tunnel" to his assistant. That hurt, even if he were a friend. Now, it's normal. On top of that, the slowly progressing occlusion in my carotids has reversed and is improving, something very rare. K2 mediates the deposition of calcium in the body. Enough of it diverts calcium from the arteries to the bones. It's almost impossible to get enough through diet. (Vitamin K1 is converted to small amounts K2 by the body.) Supplementation seems to be the only answer...
NIH