Table 3. Changes in body-weight, leptin and gut hormones after surgery.

	Final body-weight (g)	Change in body-weight (g)	Plasma leptinlevel (ng/ml)	Plasma acyl-ghrelin level (pmol/l)	Plasma total PYY level (pmol/l)	Plasma active-GLP1 level (pmol/l)
GBP surgery (n = 8)	24.5 (1.2)	−11.4 (1.3)	0.27 (0.07)	1179 (258)	29.0 (5.1)	10.5 (2.9)
Sham surgery (n = 7)	31.1 (1.4)	−4.8 (0.6)	1.05 (0.23)	517 (83)	13.1 (1.8)	2.3 (0.4)
GBS vs. Sham (P value)	0.003*	0.0007*	0.004*	0.03*	0.01*	0.02*

GBP = modified gastric bypass surgery; data presented as Mean (Standard Error of Mean) or P value (t test).