I was already suffering a very long-standing borderline case of dehydration, had been fighting leg cramps for years, if not decades. Vaping made the dehydration so bad, it was to the point that it no longer matter how much water I drank, I had severe edema of both ankles, and the bottoms of my feet were so lumpy and tender, I almost could not walk. That was another matter I had to clear up, before I could return to 100% vape only. For me, it took adding coconut water and other high-potassium foods, lots of bananas and canteloupe, a lot MORE water, and decreasing regular table-salt and caffeine quite drastically, to get rid of the "cankles" and the sore feet. so now I still have my coconut water/pineapple juice drinks twice a day, and have remained at about 90% less table-salt (I use my husband's Lite Salt, which is potassium chloride) and 80% less caffeine, and the edema has not returned, although I've been back to vaping-only for 6 wks now. The PG *and* the VG are both hygroscopic, and if the water that they snatch from our mucus membranes is not replaced, there WILL be problems!