eating suppresses ghrelin secretion. however, this suppression does not appear to be caused by the presence of food in the stomach or duodenum, nor by stomach distension. given this, which of the following physiological conditions is likely to suppress ghrelin secretion following a meal? A) Increased levels of circulating glucagon
B) Decreased osmolarity in the ileum
C) Increased levels of circulating insulin
D) Decreased levels of circulating insulin