“…These articles, conducted between 1988 and 2023, originated from different countries including the USA [ 33 , 36 , 53 , 58 , 60 , 62 , 69 , 74 , 78 ], the UK [ 16 ], China [ 43 , 49 , 51 , 71 , 73 ], Brazil [ 31 , 59 , 63 , 64 , 68 , 79 ], Spain [ 39 , 40 , 42 , 55 , 57 ], Iran [ 17 , 18 , 30 , 32 , 48 , 54 , 66 , 76 , 77 ], Malaysia [ 75 ], Palestine [ 72 ], Australia [ 45 , 46 , 65 ], Singapore [ 37 , 38 ], Norway [ 35 , 44 , 47 ], Japan [ 41 , 67 ], Czech Republic [ 34 ], Iceland [ 70 ] and Denmark [ 61 ]. The study-specific, maximally adjusted RR was reported for 552,686 individuals across the included articles and was pooled for meta-analysis to assess the association between UPFs and the risk GDM [ 16 , 32 – 34 , 36 , 38 – 41 , 43 , 48 – 51 , 53 – 56 , 59 , 60 , ...…”