Diabetes Mellitus Reduces Activity of Human UDP-Glucuronosyltransferase 2B7 in Liver and Kidney Leading to Decreased Formation of Mycophenolic Acid Acyl-Glucuronide Metabolite
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3061563/
Affinity Data by PubMed id=21123165
I think this may have something to do with this whole problem.
Fasting is the equivalent of drawing blood with leaches -- a very medieval practice.