Nutrient Intake and Deficiency of Patients 1 Year After Bariatric Surgery: Tehran Obesity Treatment Study (TOTS)

Firoozeh Hosseini-Esfahani | Alireza Khlaj | Majid Valizadeh | Fereidoun Azizi | Maryam Barzin | Parvin Mirmiran

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=137932
Date :  2020/02/10
Publish in :     Journal of Gastrointestinal Surgery
DOI :  https://doi.org/10.1007/s11605-020-04530-9
Link :  http://dx.doi.org/10.1007/s11605-020-04530-9
Keywords : Bariatricsurgery .Sleevegastrectomy .Gastricbypass .Nutrientadequacy

Abstract :

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Purpose Thisstudyaimedatassessingnutrientadequacyafter1yearinpatientswhohadundergonegastricbypass(GB)surgery or sleeve gastrectomy (SG) and to investigate the association of nutrient adequacy with anthropometric indices. Methods A total of 180 severely obese patients (BMI≥35 kg/m2) were selected among the participants of Tehran Obesity Treatment Study. Nutritional assessments were performed over 3 days of 24-h dietary recall. To evaluate the nutrient adequacy ratio(NAR),thesubject’snutrientintakewasdividedbythedietaryreferenceintakes.Themeanadequacyratio(MAR)wasalso determined as the sum of NARs divided by the number of involved nutrients (n=11). Results ThemeanageofSG(67)andGB(32)patientswas39.2±12and41.4±10years,respectively.SGpatientshadmore postoperative fat-free mass (52.0±12 kg) than GB patients (49.7±8 kg) (P0.05). The most common postoperative serum nutrient deficiencies were related to vitamin B12 (30), ferritin (19), and 25-hydroxyvitamin D (16.2). Moreover, high inadequacyofprotein(80)andtotalfat(70)intakewasreported.TheMARscoreshowedthatalmost45ofthepatients had possibly adequate intakes of some nutrients. The adequacy of nutrients was positively associated with fat-free mass (β= 8.67, P0.05). Conclusion These findings revealed that patients had inadequate nutrient intakes 1 year after bariatric surgery, which was accompanied by serum nutritional deficiencies. Compared to GB patients, SG patients had a better body composition. Overall, complianceofpatientswithdietaryguidelinesandsupplementationsneedstobecarefullymonitoredinthepostoperativeperiod