ON THE NUTRITIONAL REQUIREMENTS OF YOUNG CHILDREN WITH PARTICULAR REFERENCE TO CALCIFICATION

1953 ◽  
Vol 31 (6) ◽  
pp. 447-461
Author(s):  
Thelma Allen ◽  
Ada V. MacLeod ◽  
E. Gordon Young

Two nutritional surveys have been carried out on 158 children of one to six years in Halifax, including dietary records, anthropometric measurements, roentgenograms of the bones of the hand, and laboratory tests. Observations were repeated after six months. Deficiencies in calories, calcium, and vitamin D occurred most frequently on the basis of the Canadian dietary standard. Seventy-eight per cent of the children received less than 1 gm. of calcium per day. The ratio Ca : P averaged 0.77. The consumption of vitamin D varied widely and was less than 400 I.U. in 47% in the first survey and 84% in the second. The average intake was less than 200 I.U. per day. From data of repetitions it was apparent that half of the children showed adequate growth and calcification on substandard diets while 30% did not. It was evident that normal maturation of bone could take place on intakes of vitamin D of 25 to 150 I.U. and of calcium of less than 1 gm. Calcium was adequate at 0.2 to 0.7 gm. per day in some cases but not in others.

2007 ◽  
Vol 77 (6) ◽  
pp. 376-381 ◽  
Author(s):  
de Souza Genaro ◽  
de Paiva Pereira ◽  
de Medeiros Pinheiro ◽  
Szejnfeld ◽  
Araújo Martini

Vitamin D is essential for maintaining calcium homeostasis and optimizing bone health. Its inadequacy is related to many factors including dietary intake. The aim of the present study was to evaluate serum 25(OH)D and its relationship with nutrient intakes in postmenopausal Brazilian women with osteoporosis. This cross-sectional study comprised 45 free-living and assisted elderly at São Paulo Hospital. Three-day dietary records were used to assess dietary intakes. Bone mineral density was measured with a dual-energy X-ray absorptiometer (DXA). Blood and urine sample were collected for analysis of biochemical markers of bone and mineral metabolism. Insufficiency of vitamin D was observed in 24.4% of the women and optimal levels (≥ 50 nmol/L) were observed in 75.6%. Parathyroid hormone was above the reference range in 51% of the participants. The mean calcium (724 mg/day) and vitamin D (4.2 μ g/day) intakes were lower than the value proposed by The Food and Nutrition Board and sodium intake was more than two-fold above the recommendation. Higher levels of serum 25(OH)D were inversely associated with sodium intake. Dietary strategies to improve serum vitamin D must focus on increasing vitamin D intake and should take a reduction of sodium intake into consideration.


Author(s):  
Aledie Navas-Nazario ◽  
Li Fangyong ◽  
Veronika Northrup ◽  
Pnina Weiss ◽  
DEC Cole ◽  
...  

2016 ◽  
pp. 160-166 ◽  
Author(s):  
César Augusto Restrepo Valencia ◽  
Jose Vicente Aguirre Arango

Objective: To determine whether patients with chronic kidney disease (CKD) without dialysis their stage impacts the native vitamin D levels. Methods: Patients over 18 years with chronic kidney disease stage 2-5 without dialysis treatment. They demographic, anthropometric variables, degree of sun exposure, disease etiology and laboratory variables related to bone and mineral disorders were evaluated. Study analytical cross-sectional prospective. Descriptive statistical methods for quantitative and qualitative are characterized, and analytical correlation between levels of vitamin D statistical laboratory tests related to bone and mineral disorders, sun exposure and ethnicity variables for each stage were characterized. By descriptive statistical methods, quantitative and qualitative variables were characterized, and analytical statistical correlation between levels of vitamin D with laboratory tests related to bone and mineral disorders, sun exposure and ethnicity for each stage were practiced. Results: 331 patients were evaluated, with a mean age of 71 years, the mestizo majority (71%), 173 women, main etiology of CKD hypertensive nephropathy (33.2%). 21.1% of patients had normal levels of vitamin D, 70.1% insufficient, and 8.8% in deficit. Negative correlation was detected between the levels of vitamin 25(OH)D and serum creatinine, phosphorus, calcium x phosphorus product, PTH, proteins in urine 24 hours and BMI. Positive correlation for calcium and albumin. Positive statistical significance between the levels of vitamin 25(OH)D and sun exposure for 3b and 4 stages was found. Conclusions: In patients with CKD is common to detect low levels of vitamin 25(OH)D, which can contribute to the generation of secondary hyperparathyroidism.


2012 ◽  
Vol 82 (5) ◽  
pp. 342-347 ◽  
Author(s):  
Ibrahim Elmadfa ◽  
Alexa L. Meyer

Vitamins are essential nutrients for many body functions and particularly important during growth. Adequate supply in pregnancy and in early infancy is therefore crucial, but there is still a lack of knowledge about the needed amounts of vitamins of children older than six months and also during pregnancy. Recommendations for intake levels are generally derived by extrapolation from data for infants based in turn on the contents in breast milk and those for adults. A vitamin of particular importance in pregnancy is folic acid due to its role in the development of the brain and nerve system and the prevention of fetal neural tube defects (NTD). Mandatory fortification of flour and certain other grain products in many countries has been associated with a reduction in NTD incidence. However, other deficiencies or suboptimal status of B vitamins, especially B6 and B12 have been repeatedly reported in pregnant women also in high-income countries. Vitamin A is one of the three most critical micronutrients globally and pregnant women and young children are especially vulnerable to deficiencies. Night blindness, anemia, and immunodeficiency are major consequences of inadequate supply in these populations. Much attention has recently been accorded vitamin D that is also critical in pregnant women and young children for instance because of its involvement in bone mineralization but also its more recently discovered immune-modulating function that is thought to prevent development of autoimmune diseases like diabetes mellitus type I. A healthy balanced diet provides the best basis for optimal pregnancy outcome, lactation performance, and complementary feeding. However, supplements or fortified foods may be needed to cover the high requirements especially of critical vitamins such as vitamin D and folic acid and to correct unfavorable dietary patterns in women or to adapt foods to the needs of young children.


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