Table 1.

Characteristics of included studies.

		Soy group						Control group
No.	Author	Number	Age (yr)	Female (n)	Body mass index (kg/m2)	Weight (kg)	Methods	Number	Age (yr)	Female (n)	Body mass index (kg/m2)	Weight (kg)	Methods	Jada scores
1	Maleki 2019	31	46.16 ± 10.53	21	30.85 ± 3.53	83.03 ± 9.98	240 mL/day soy milk plus 500-deficit calorie diet for 8 weeks	31	45.16 ± 9.86	22	31.29 ± 3.77	84.97 ± 14.02	500-deficit calorie diet	4
2	Eslami 2019	32	46.25 ± 10.51	22	–	–	240 mL of soy milk daily plus low-calorie diet for 8 weeks	32	45.16 ± 9.86	23	–	–	low-calorie diet	4
3	Deibert 2019	11	57.0 (8.0), median (IQR)	3	32.2 (3.4),	101.1 (30.5)	soy-yogurt-honey preparation	11	54.0 (14.0), median (IQR)	6	32.4 (3.7)	99.5 (11.1)	guided lifestyle change	3
4	Amanat 2018	41	44.22 ± 11.8	-	29.09 ± 4.67	81.6 ± 14.73	250 mg genistein for 8 weeks	41	42.94 ± 9.55	-	27.83 ± 4.51	74.92 ± 11.51	placebo	5
5	Kani 2014	15	48.5 ± 3.7	8	31.3 ± 3.8	91.2 ± 9.2	low calorie, low carbohydrate soy containing diet for 8 weeks	15	49.3 ± 3.5	8	28 ± 3.2	80.1 ± 8.9	low calorie, low carbohydrate	4