Nutrition support is an essential aspect of treatment after bariatric surgery (BS). A high-protein diet with an intake of up to 1.5 g/kg of ideal body weight (IBW) per day is recommended to minimize loss of lean body mass after BS. However, protein intake recommendations may need to be adjusted for patients with compromised renal function, necessitating an individualized approach tailored to each patient’s clinical status. This case report aimed to demonstrate nutritional evaluation, education, and counseling for a male patient with chronic kidney disease (CKD) who underwent BS one year after surgery. Following BS, the patient adhered to the standard Seoul National University Hospital BS diet protocol. Considering his postoperative renal function, protein requirement was set at 1.0 g/kg of IBW. A total of 10 individualized nutritional counseling sessions were conducted according to renal function and complications. One year after BS, he successfully lost weight with % excess weight loss of 93%, maintained CKD stage 3, reduced prescription of oral hypoglycemic agent, improved glycated hemoglobin levels, and improved eating habits significantly. Thus, individualized nutrition intervention is important for supporting patients with CKD to reach their goal weight after BS, improve nutritional status, and prevent post-operative complications.
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