Table 1.

Search terms and search strategy.

Search terms and search strategy
type II diabetes/pre-diabetic	1	(((“type 2 diabet*”) OR “type II diabet*”)) OR type 2 diabetes[MeSH Terms]
	2	(((((prediabetes) OR prediabetics) OR prediabetic) OR pre-diabetes) OR pre-diabetics) OR pre-diabetic
	3	((“treatment naive”) OR “newly diagnosed”) OR “new diagnosis”
	4	(“impaired glucose tolerance”) OR “impaired fasting glucose”
	5	2 OR 3 OR 4 (((((((“treatment naive”) OR “newly diagnosed”) OR “new diagnosis”)) OR ((((((prediabetes) OR prediabetics) OR prediabetic) OR pre-diabetes) OR pre-diabetics) OR pre-diabetic)))) OR ((“impaired glucose tolerance”) OR “impaired fasting glucose”)
	6	1 AND 5 ((((((“type 2 diabet*”) OR “type II diabet*”)) OR type 2 diabetes[MeSH Terms]))) AND (((((“treatment naive”) OR “newly diagnosed”) OR “new diagnosis”)) OR ((((((prediabetes) OR prediabetics) OR prediabetic) OR pre-diabetes) OR pre-diabetics) OR pre-diabetic))
gut microbiota composition	7	(((microbiome) OR microbiota) OR microflora) OR “gut bacteria”
	8	6 AND 7 Search (((((((((“treatment naive”) OR “newly diagnosed”) OR “new diagnosis”)) OR ((((((prediabetes) OR prediabetics) OR prediabetic) OR pre-diabetes) OR pre-diabetics) OR pre-diabetic)))) OR ((“impaired glucose tolerance”) OR “impaired fasting glucose”))) AND (((((microbiome) OR microbiota) OR microflora) OR “gut bacteria”))
	9	Remove duplicates from 8