{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T15:39:30Z","timestamp":1790264370809,"version":"4.1.0"},"reference-count":36,"publisher":"FapUNIFESP (SciELO)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ABCD, arq. bras. cir. dig."],"published-print":{"date-parts":[[2016,3]]},"abstract":"<jats:p> Background : Essential nutrients are considered for the prevention of the bone loss that occurs after bariatric surgery.  Aim : Evaluate nutrients involved in bone metabolism, and relate to serum concentrations of calcium, vitamin D, and parathyroid hormone, and the use of supplements and sun exposure on the bone mass of patients who had undergone gastric bypass surgery.  Methods : An observational study, with patients who had undergone the surgery 12 or more months previously, operated group (OG), compared to a control group (CG).  Results : Were included 56 in OG and 27 in the CG. The mean age was 36.4\u00b18.5 years. The individuals in the OG, compared to CG, consumed inadequate amounts of protein and daily calcium. The OG had a higher prevalence of low sun exposure, lower levels of 25OH Vitamin D (21.3\u00b110.9 vs. 32.1\u00b111.8 ng\/dl), and increased serum levels of parathyroid hormone (68.1\u00b132.9 vs. 39.9\u00b111.9 pg\/ml, p&lt;0.001). Secondary hyperparathyroidism was present only in the OG (41.7%). The mean lumbar spine bone mineral density was lower in the OG. Four individuals from the OG had low bone mineral density for chronological age, and no one from the CG.  Conclusion : The dietary components that affect bone mass in patients undergoing bariatric surgery were inadequate. The supplementation was insufficient and the sun exposure was low. These changes were accompanied by secondary hyperparathyroidism and a high prevalence of low bone mass in lumbar spine in these subjects.<\/jats:p>","DOI":"10.1590\/0102-6720201600010010","type":"journal-article","created":{"date-parts":[[2016,4,20]],"date-time":"2016-04-20T22:23:53Z","timestamp":1461191033000},"page":"38-42","source":"Crossref","is-referenced-by-count":15,"title":["IMPACT OF DEFICIENT NUTRITION IN BONE MASS AFTER BARIATRIC SURGERY"],"prefix":"10.1590","volume":"29","author":[{"given":"Tatiana Munhoz da Rocha Lemos","family":"COSTA","sequence":"first","affiliation":[{"name":"Federal University of Paran\u00e1,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mariana","family":"PAGANOTO","sequence":"additional","affiliation":[{"name":"Federal University of Paran\u00e1,  Brazil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rosana Bento","family":"RADOMINSKI","sequence":"additional","affiliation":[{"name":"Federal University of 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