The link posted lists the positive effects of whey on promoting insulin release and inhibiting increases in postprandial blood glucose increase after a CHO containing meal and thereby decreasing development of T2DM. (nutritionfacts.org)
Here is a view of postprandial blood glucose levels in healthy (HbA1c 5.4 or less) young people as measured by Professor JS Christiansen (from Ned Kock): (perfecthealthdiet.com)
We further identified a subset of non-leucokininergic cells proximal to Lkr neurons that rhythmically increased postprandial sleep when silenced, suggesting that these cells are cyclically gated inhibitory inputs to Lkr neurons. (elifesciences.org)