TY - JOUR T1 - Response to letter titled ‘Reduction of HbA1c in patients with type 2 diabetes following duodenal mucosal resurfacing: could other factors be at play?’ JF - Gut JO - Gut SP - 218 LP - 218 DO - 10.1136/gutjnl-2020-321170 VL - 70 IS - 1 AU - JJGHM Bergman Y1 - 2021/01/01 UR - http://gut.bmj.com/content/70/1/218.1.abstract N2 - We agree with Johnston and colleagues1that it is important to consider potential confounding factors, such as diet and exercise, when interpreting the results of our study.2 Our study did not include specific dietary counselling of patients, and there was no concerted effort to have patients adhere to a specific hypocaloric regimen. During follow-up visits, patients underwent per protocol (PP) dietary counselling based on standard clinical practice guidelines. These guidelines emphasise the relation of carbohydrate intake, glycaemic index and blood glucose control. Taking into account that patients willing to participate in a study are generally more motivated to make behavioural changes, it is possible that the subjects in … ER -