A transcriptome research of its organs revealed its gene signature is highly evolved and adapted for extreme longevity (slow metabolism, improved insulin gene signaling and glucose homeostasis, thus reduced blood glucose, improved cancer genes, improved endothelial function by eNOS (endothelial Nitric Oxide Synthase) meaning improved vascular
coronary blood flow, improved
microvasculature arterial and heart endothelium function) but more importantly, to answer your question, some whales display low blood glucose hypoglycemia, this affects the quantity and period of proteins / DNA / cell exposure to glucose glycation, glycosylation and glycoxydation reactions.