Table 3.

Studies were evaluating bone mineral density after bariatric surgery

Time of Study	Author	Year	Surgery	Follow up (months)	BMD loss (%)
					F.N.	T.H.	L.S.
Short term follow up	Chen et al.[158]	2020	LSG	12	6*	10.5	0.9
	Gerber P et al.[159]	2021	LSG/RYGB	12	LSG <RYGB	-	LSG <RYGB
	Luger et al.[160]	2018	OAGB	12	-	13	7
	Ieong et al.[161]	2021	RYGB	24	9	8	3
			LSG		7	10	1
			LSG/RYGB		NS	NS	NS
Long term follow up	Brzozowska et al.[162]	2021	LSG	36	-	9	0.1
			RYGB		-	14	7.2
			LSG/RYGB		-	LSG <RYGB	LSG <RYGB
	Cadart et al.[32]	2020	LSG	48	8.1±5.5	7.4±6.4	2.0±7.2
			RYGB		8.6±5	10.9±6.3	2.8±5.8
			LSG/RYGB		NS	LSG <RYGB	NS
	Lindeman et al.[163]	2020	RYGB	60	14.1±8.0	15.3±6.3	7.8±7.6

*Highlight; significant. NS: Nonsignificant, BMD: Bone mineral density, F.N.: Femoral neck, T.H.: Total hip, L.S.: Lumbar spine, RYGB: Roux-en-Y gastric bypass, LAGB: Laparoscopic adjustable gastric band, LSG: Laparoscopic sleeve gastrectomy