“…The studies were conducted at research centres 10, 15, 16, 18, 24, 27, 34–37 , hospitals 20, 28, 30, 32, 33 and universities 17, 19, 21–23, 25, 26, 29, 31 in USA 17, 20–24, 27–29 , Australia 16, 18 , Denmark 19, 31 , Germany 10, 34–37 , Mexico 25, 26 , Spain 30, 32, 33 and France 15 . Twelve studies involved people without T2DM 15, 17, 18, 21, 23, 26–33 , and six were in patients with T2DM 10, 17, 22, 24, 25, 34–37 . The majority (n = 13) of the studies used high AGE diets which were two or more times higher in AGE content than the low AGE diets 1, 10, 15, 17–19, 22–24, 27–37 and the rest used high AGE diets that were less than two times higher in AGE content than the low AGE diets.…”