Table 1.

Baseline (T1) and follow-up (T2) assessments within the three groups (Means ± SE).

	No treatment (n = 16)	Behavioral weight loss (n = 14)	Bariatric surgery (n = 17)
T1 BMI	41.19 ± 0.94	42.71 ± 1.00	43.77 ± 0.91
T2 BMI	40.43 ± 1.00	37.50 ± 1.07	34.65 ± 0.97
T1 LHCT	2.25 ± 0.28	2.21 ± 0.30	2.27 ± 0.28
T2 LHCT	2.25 ± 0.28	2.20 ± 0.30	2.26 ± 0.27
T1 RHCT	2.24 ± 0.36	2.20 ± 0.38	2.25 ± 0.35
T2 RHCT	2.26 ± 0.30	2.20 ± 0.32	2.28 ± 0.29
T1 LHGM	199,180 ± 4873	199,428 ± 5210	201,122 ± 4728
T2 LHGM	203,135 ± 4979	202,074 ± 5322	203,563 ± 4830
T1 RHGM	201,993 ± 5187	201,403 ± 5545	201,537 ± 5032
T2 RHGM	200,322 ± 5029	200,100 ± 5376	203,149 ± 4879
T1 LHWM	219,683 ± 6863	221,881 ± 7337	216,556 ± 6658
T2 LHWM	224,098 ± 7082	223,694 ± 7571	218,625 ± 6870
T1 RHWM	220,777 ± 7284	223,656 ± 7787	217,768 ± 7067
T2 RHWM	223,004 ± 7173	221,919 ± 7668	217,414 ± 6958

Abbreviations: BMI: body mass index (in kg/m²); LHCT: left hemisphere cortical thickness (in mm); RHCT: right hemisphere cortical thickness (in mm); LHGM: left hemisphere gray matter volume (in mm³); RHGM: right hemisphere gray matter volume (in mm³); LHWM: left hemisphere white matter volume (in mm³); RHWM: right hemisphere white matter volume (in mm³).