Complex sentence: In medicine and specifically endocrinology, postprandial dip is a term used to refer to mild hypoglycemia occurring after ingestion of a heavy meal and subsequent to the body's own normal insulin secretion in response to the glucose load represented by the meal.
Split into simpler sentences: In medicine and specifically endocrinology, postprandial dip is a term used to refer to mild hypoglycemia occurring after ingestion of a heavy meal. The dip is caused by a drop in blood glucose resulting from the body's own normal insulin secretion, which in turn is a respone to the glucose load represented by the meal.