A key factor for the success of the RYGB procedure for the treatment of obesity is that
A) the procedure increases the rate of entry of insulin into the brain.
B) it disrupts the secretion of CCK.
C) it increases the activity of NPY neurons.
D) it disrupts the secretion of ghrelin.
E) it decreases the secretion of leptin from fat cells.
Answer: D
Rationale: A key factor for the success of the RYGB procedure for the treatment of obesity is that it disrupts the secretion of ghrelin.
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