scholarly journals Calcium absorption and vitamin D status in school age children

2009 ◽  
Vol 23 (S1) ◽  
Author(s):  
Steven A Abrams ◽  
Penni D Hicks ◽  
Keli M Hawthorne
Keyword(s):  
Vitamin D ◽  
Calcium Absorption ◽  
School Age Children ◽  
School Age ◽  
Vitamin D Status

Vitamin D status in Mexican children 1 to 11 years of age: an update from the Ensanut 2018-19

2021 ◽  
Vol 63 (3 May-Jun) ◽  
pp. 382-393
Author(s):  
Mario E Flores ◽  
Marta Rivera-Pasquel ◽  
Andrys Valdez-Sánchez ◽  
Vanessa De la Cruz-Góngora ◽  
Alejandra Contreras-Manzano ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Dairy Products ◽  
The Body ◽  
School Age Children ◽  
School Age ◽  
Vitamin D Status ◽  
Serum Samples ◽  
Related Factors ◽  
Mexican Children

Objective. To evaluate vitamin D status and deficiency in Mexican children and related factors, with updated data from a representative national survey. Materials and methods. Data and serum samples of child participants were collected in the Ensanut 2018-19. The measurement 25-(OH)-D was obtained through chemiluminescence. Height and weight, as well as dietary information, were measured using a semi-quan­titative food frequency questionnaire and sociodemographic information. Results. Data of 4 691 children aged 1-11 years were analyzed. Vitamin D deficiency (25-OH-D<50 nmol/L) was found in 27.3% of pre-school-age children and 17.2% of school-age children, and was positively associated with the body mass index (BMI). Main dietary sources were milk, eggs and dairy products, which in combination provided >70% of vitamin D intake. Conclusions. Vitamin D deficiency is important in Mexican children. Actions and programs to fight this deficiency are required.

scholarly journals Vitamin D for secondary prevention of acute wheeze attacks in preschool and school-age children

Thorax ◽  
2019 ◽  
Vol 74 (10) ◽  
pp. 977-985 ◽  
Author(s):  
Christos Stefanidis ◽  
Adrian R Martineau ◽  
Chinedu Nwokoro ◽  
Christopher J Griffiths ◽  
Andrew Bush
Keyword(s):  
Vitamin D ◽  
Secondary Prevention ◽  
Vitamin D Supplementation ◽  
Small Sample ◽  
Preschool Age ◽  
School Age Children ◽  
School Age ◽  
Vitamin D Status ◽  
Increased Risk ◽  
Tract Infections

IntroductionVitamin D is best known for its role in bone health; however, the discovery of the vitamin D receptor and the expression of the gene encoding the vitamin D 1α-hydroxylase (CYP27B1) enzyme in a wide variety of tissues including immune cells and respiratory epithelium has led to the discovery of potential roles for vitamin D in the prevention of acute wheeze.MethodsWe review here the literature concerning the relationships between circulating 25-hydroxyvitamin D (25(OH)D) concentration and secondary prevention of acute wheeze attacks in preschool and school-age children.ResultsEpidemiological data suggest that vitamin D insufficiency (25(OH)D <75 nmol/L) is highly prevalent in preschool and school-age children with wheeze. Preschool age children with a history of wheeze attacks and circulating 25(OH)D <75 nmol/L are at increased risk and frequency of future acute wheeze. However, no consistent association between low vitamin D status and risk of acute wheeze is reported in school-age children. Seven randomised controlled trials (RCTs) with relatively small sample sizes (30–430) and variable quality showed inconsistent results regarding the effect of oral vitamin D supplementation during childhood on the risk of asthma attacks, asthma symptom control, inhaled corticosteroid requirements, spirometry and unscheduled healthcare attendances for wheeze. A RCT showed that vitamin D supplementation had no effect on the frequency of unplanned healthcare attendances due to acute wheeze in 22 preschool children.DiscussionAn evidence-based recommendation for the use of vitamin D as a preventive therapy for wheeze attacks cannot be made until results of further trials are available. The assessment of circulating 25(OH)D concentration and the optimisation of vitamin D status to prevent acute respiratory tract infections, and to maintain skeletal and general health in preschool and school-age children with acute wheeze is worthwhile in its own right, but whether this will reduce the risk of acute wheeze attacks is unclear.

Vitamin D Status of School-Age Children in North India

2021 ◽  
Author(s):  
Kriti Joshi ◽  
Eshita Bhowmik ◽  
Nirupama Singh ◽  
Vijayalakshmi Bhatia
Keyword(s):  
Vitamin D ◽  
North India ◽  
School Age Children ◽  
School Age ◽  
Vitamin D Status

scholarly journals Vitamin D Deficiency in School-Age Children Is Associated with Sociodemographic and Lifestyle Factors

2015 ◽  
Vol 145 (4) ◽  
pp. 791-798 ◽  
Author(s):  
Trudy Voortman ◽  
Edith H van den Hooven ◽  
Annemieke C Heijboer ◽  
Albert Hofman ◽  
Vincent WV Jaddoe ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Lifestyle Factors ◽  
School Age Children ◽  
School Age

scholarly journals Vitamin D supplementation: less controversy, more guidance needed

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2017 ◽  
Author(s):  
Caroline S. Stokes ◽  
Frank Lammert
Keyword(s):  
Vitamin D ◽  
Recent Work ◽  
Liver Diseases ◽  
Calcium Absorption ◽  
Vitamin D Supplementation ◽  
Research Articles ◽  
Vitamin D Status ◽  
Key Factors ◽  
Skeletal Health ◽  
Multiple Functions

Vitamin D is a secosteroid hormone with multiple functions that extend beyond the regulation of intestinal calcium absorption. In recent years, the publication of research articles investigating associations between vitamin D status and health has reached an all-time high, and an increase in supplementation studies has followed. Given the pleiotropic effects of vitamin D, the scientific focus has gone beyond its known classic benefits on skeletal health to include diabetes and cardiovascular, neurological, respiratory, renal, and liver diseases, yet numerous conflicting findings continue to emerge. This review presents some examples of recent work within the context of controversies surrounding vitamin D and highlights key factors that should be considered when designing vitamin D supplementation regimens.

Calcium absorption and intestinal calcium-binding protein: quantitative relationship.

1979 ◽  
Vol 236 (5) ◽  
pp. E556 ◽  
Author(s):  
J J Feher ◽  
R H Wasserman
Keyword(s):  
Vitamin D ◽  
Vitamin D3 ◽  
Calcium Binding ◽  
Calcium Absorption ◽  
Binding Protein ◽  
Quantitative Relationship ◽  
Calcium Binding Protein ◽  
Vitamin D Status ◽  
Loop Technique

The concentration of the vitamin D-induced calcium-binding protein (CaBP) and calcium absorption from the duodenum were investigated in chicks with an in vivo ligated-loop technique. The relation between CaBP and calcium absorption was dependent on a) source of vitamin D activity (either vitamin D3 or 1,25-dihydroxycholecalciferol); b) dosage of vitamin D3; c) time after administration of vitamin D3 to rachitic animals. To aid in the interpretation of these results, a phenomenological model was developed in which CaBP was viewed as being linearly related to a portion of calcium absorption. The model, when applied to the data, suggests that there is a "nonfunctional" pool of CaBP the size of which is determined by the vitamin D status of the animal. After correction for this nonfunctional pool, the proportionality between CaBP and calcium absorption is independent of the vitamin D status of the animal.

P146 Estimation of vitamin D deficiency in healthy school-age children: current status in Italy

2018 ◽  
Vol 50 (4) ◽  
pp. e409
Author(s):  
T. Galeazzi ◽  
C. Monachesi ◽  
A.K. Verma ◽  
M. Brugia ◽  
L. Marinelli ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Current Status ◽  
School Age Children ◽  
School Age

Vitamin D and Bone Health—Discussion Points Following the Recent Institute of Medicine Recommendations

2011 ◽  
Vol 07 (02) ◽  
pp. 137 ◽  
Author(s):  
Robert P Heaney ◽  
Keyword(s):  
Vitamin D ◽  
Bone Health ◽  
Calcium Absorption ◽  
Institute Of Medicine ◽  
Vitamin D Status ◽  
Extensive Experience ◽  
Hydroxyvitamin D ◽  
Daily Amount ◽  
Fracture Risk Reduction ◽  
25 Hydroxyvitamin D

The 2011 Institute of Medicine recommendations for vitamin D—both the recommended daily amount (RDA) and the vitamin D status judged adequate for bone health—are too low. Calcium absorption, osteoporotic fracture risk reduction, and healing of histological osteomalacia all require values above 30 ng/ml, and probably even 40 ng/ml. Furthermore, the proposed RDA (600 international units per day up to the age of 70) is not compatible with the blood level of 25-hydroxyvitamin D (i.e., 20 ng/ml) recommended in the same report. Concerns regarding adverse consequences of higher intakes or status levels can be dismissed, in view of our extensive experience with outdoor summer workers (who regularly have values of 60 ng/ml or more) and the virtual certainty that human physiology evolved in—and is attuned to—an environment providing 10,000 IU/day or more.

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