Nutritional Deficiencies in Obese Sleeve Gastrectomy Patients

Micronutrient Status in Morbidly Obese Patients Prior to Laparoscopic Sleeve Gastrectomy and Micronutrient Changes 5 years Post-surgery

“…Vitamin deficiencies are of concern after bariatric surgery, with 50% of reported deficiencies occurring within the first year of surgery (9). The LSG surgery does not seem to affect the digestive system besides from accelerating the gastric emptying and possibly from consequences due to resection of the gastric fundus (14,15). However, there is still lack of evidence on how LSG affects the gastric emptying and if fast passage of food though the gastrointestinal tract promotes micronutrient deficiencies (14).…”

“…The LSG surgery does not seem to affect the digestive system besides from accelerating the gastric emptying and possibly from consequences due to resection of the gastric fundus (14,15). However, there is still lack of evidence on how LSG affects the gastric emptying and if fast passage of food though the gastrointestinal tract promotes micronutrient deficiencies (14). Removing the gastric fundus during LSG decreases the production of parietal cells that secrets hydrochloric acid which can affect iron absorption and intrinsic factor (IF) that is essential for vitamin B12 uptake (8, 16).…”