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Nutr Hosp. 2013 Jan-Feb;28(1):100-4. doi: 10.3305/nh.2013.28.1.5974.

Iron (FeSo4) bioavailability in obese subjects submitted to bariatric surgery.

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1
Department of Internal Medicine, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, SP, Brazil.

Abstract

in English, Spanish

BACKGROUND:

Iron bioavailability in obese subjects after the ingestion of a nutritional supplement was the aim of this work.

METHODS:

Fourteen persons were studied before and after bariatric surgery after the ingestion of a nutritional formulation containing 25 mg iron, 25 g fiber and 800 mg calcium.

RESULTS:

The following ferremia values (median and minimum--maximum) were obtained before and after bariatric surgery, respectively: Fasting, 105 (70 - 364) μg/dL and 198 (38 - 617) μg/dL; 1 hour, 103 (63 - 305) μg/dL and 160 (11 - 207) μg/dL; 2 hours, 103 (62 - 150) μg/dL and 141 (10 - 412) μg/dL; 3 hours. 97 (63 - 190) μg/dL and 153 (6 - 270) μg/dL; 4 hours, 91 (58 - 163) μg/dL and 156 (40 - 251) μg/dL (p>0.05), with no association of serum iron levels with time. There was a difference in total triglycerides (95 ± 29 mg/dL and 60 ± 10 mg/dL) which were correlated with a decrease in serum ferritin levels (r = 0,926, p = 0.008), UIBC (r = 0.910, p = 0.01), total cholesterol (r = 0,918, p = 0.01) and LDL-c fraction (r = 0.830, p = 0.04), with an increase in HDL-c fraction (r = 0,807, p = 0.05).

CONCLUSION:

Iron bioavailability in obese subjects was affected by the ingestion of the nutritional formulation containing calcium and fiber, a fact that may cause these patients to develop iron deficiency.

PMID:
23808436
DOI:
10.3305/nh.2013.28.1.5974
[Indexed for MEDLINE]
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