Nutritional Requirements for Calcium and Vitamin D

Where possible, pre-conception counselling is desirable for both prospective parents in order to address issues of lifestyle and nutrition so that pregnancy can proceed with the best possible start. If dieting is necessary this should be initiated as far in advance of the pregnancy as possible, because inadequate nutrition around the time of conception can influence the fetal growth trajectory and weight at birth. Regardless of BMI, women should also be encouraged to engage in regular aerobic exercise. Nutritional requirements in the pre-conception period include adequate amounts of oily fish to provide omega-3 fatty acids. All women planning a pregnancy should receive 400 #amp;#x00B5;g of folic acid daily, and vitamin B12 and vitamin D supplementation may be necessary, particular for vegetarians. Other vitamins and minerals should be considered, particularly iron and iodine, but most should be obtainable from a balanced diet. Harmful behaviours and environmental exposures should be avoided.

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

Canadian Journal of Medical Sciences ◽

10.1139/cjms53-048 ◽

1953 ◽

Vol 31 (6) ◽

pp. 447-461

Author(s):

Thelma Allen ◽

Ada V. MacLeod ◽

E. Gordon Young

Keyword(s):

Vitamin D ◽

Young Children ◽

Laboratory Tests ◽

Anthropometric Measurements ◽

Nutritional Requirements ◽

Average Intake ◽

Dietary Records

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.

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Nutritional Requirements for Calcium and Vitamin D

The Physiological Basis of Metabolic Bone Disease ◽

10.1201/b16906-2 ◽

2014 ◽

pp. 1-12

Author(s):

J Gallagher

Keyword(s):

Vitamin D ◽

Nutritional Requirements

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Nutritional requirements during ageing

OCL ◽

10.1051/ocl/2019015 ◽

2019 ◽

Vol 26 ◽

pp. 22 ◽

Cited By ~ 1

Author(s):

Jean-Michel Lecerf

Keyword(s):

Physical Activity ◽

Fatty Acids ◽

Vitamin D ◽

Protein Synthesis ◽

Physiological Condition ◽

Point Of View ◽

Energy Requirements ◽

Quantitative Aspect ◽

Nutritional Requirements

Ageing is a physiological condition characterized by a decline of the adaptatives capacities and associated to a decrease of the lean mass. That one is due to a decrease of the post-prandial protein synthesis. It is why protein recommended allowances must be sufficient for a quantitative aspect (0.8–1.2 g/kg/d) and adapted for a qualitative point of view. Energy requirements do not decrease with age if the physical activity is unchanged: it is why the carbohydrate and lipid intakes must be similar to those of a younger adult. The quality of the carbohydrate intake and the distribution of the fatty acids are also important in order to avoid any deficiency. Concerning non-energetic nutrients, one must be particularly cautious for the vitamin D and calcium intakes. Behind nutrients there are foods and dietary patterns who have their own effects.

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