Lactose intolerance: lack of evidence for short stature or vitamin D deficiency in prepubertal children.
| Autor: | Setty-Shah N; Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America., Maranda L, Candela N, Fong J, Dahod I, Rogol AD, Nwosu BU |
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| Jazyk: | angličtina |
| Zdroj: | PloS one [PLoS One] 2013 Oct 25; Vol. 8 (10), pp. e78653. Date of Electronic Publication: 2013 Oct 25 (Print Publication: 2013). |
| DOI: | 10.1371/journal.pone.0078653 |
| Abstrakt: | Background: The health consequences of lactose intolerance (LI) are unclear. Aims: To investigate the effects of LI on stature and vitamin D status. Hypotheses: LI subjects will have similar heights and vitamin D status as controls. Subjects and Methods: Prepubertal children of ages 3-12 years with LI (n=38, age 8.61 ± 3.08y, male/female 19/19) were compared to healthy, age- and gender-matched controls (n=49, age 7.95±2.64, male/female 28/21). Inclusion Criteria: prepubertal status (boys: testicular volume <3cc; girls: Tanner 1 breasts), diagnosis of LI by hydrogen breath test, and no history of calcium or vitamin D supplementation. Vitamin D deficiency was defined as 25-hydroxyvitamin D [25(OH)D] <50 nmol/L. Gender-adjusted midparental target height (MPTH) z-score was calculated using NCHS data for 18 year-old adults. Data were expressed as mean ± SD. Results: There was no significant difference in 25(OH)D between the LI and non-LI subjects (60.1±21.1, vs. 65.4 ± 26.1 nmol/L, p = 0.29). Upon stratification into normal weight (BMI <85(th) percentile) vs. overweight/obese (BMI ≥85(th) percentile), the normal weight controls had significantly higher 25(OH)D level than both the normal weight LI children (78.3 ± 32.6 vs. 62.9 ± 23.2, p = 0.025), and the overweight/obese LI children (78.3±32.6 vs. 55.3±16.5, p = 0.004). Secondly, there was no overall difference in height z-score between the LI children and controls. The normal weight LI patients had similar height as normal controls (-0.46 ± 0.89 vs. -0.71 ± 1.67, p = 0.53), while the overweight/obese LI group was taller than the normal weight controls (0.36 ± 1.41 vs. -0.71 ± 1.67, p = 0.049), and of similar height as the overweight/obese controls (0.36 ± 1.41 vs. 0.87 ± 1.45, p = 0.28). MPTH z-score was similar between the groups. Conclusion: Short stature and vitamin D deficiency are not features of LI in prepubertal children. |
| Databáze: | MEDLINE |
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