52 VITAMIN D—BIOMOLECULAR CHARACTERISTICS There are two ways of acquiring vitamin D—cutaneous irradiation and diet. In the skin, cholecalciferol is synthesized through UV irradiation of 7-dihydrocholesterol. In infants, immobile or institutionalized persons, the elderly (>70 years old), and veiled women or those living in northern latitudes, sun radiation may not be a sufficient source of vitam...

Deficiencies in micronutrients such as iron, vitamin A, and iodine affect billions of people worldwide, causing death, disease, and disability. The UN World Food Programme (WFP) has long been recognised for its ability to deliver food to some of the most remote locations, under the toughest conditions: refugees in border camps, populations cut off by conflict, extremely poor and marginalised pe...

Background and Objectives: Previous research has established that Vitamin D3 (Cholecalciferol) deficiency is considered to be a highly prevalent nutritional problem worldwide. Data from National Food and Nutrition Surveillance Program (2015) revealed that prevalence of vitamin D3 deficiency in Iran is more than 70% of the population. Vegetable oils are considered to be potential candidates for ...

Vitamin-D deficiency is not as rare in Jamaica as previously believed. 9 children with vitamin-D deficiency rickets have been seen at the University Hospital of the West Indies during the past 5 years. All were over 3 years of age at time of presentation. Both dietary deficiency of vitamin D and lack of exposure to sunlight seem to be important causes. Children living in rural Jamaica seem to b...

BACKGROUND Symptomatic vitamin D deficiency is associated with slowed growth in children. It is unknown whether vitamin D repletion in children with asymptomatic serum vitamin D deficiency can restore normal growth. OBJECTIVE We tested the impact of vitamin D-supplementation on serum concentrations of 25-hydroxyvitamin D [25(OH)D] and short-term growth in Mongol children, with very low serum ...

BACKGROUND Micronutrient deficiency is a common public health problem in developing countries, especially for infants and children in the first two years of life. As this is an important time window for child development, micronutrient fortified complementary feeding after 6 months of age, for example with milk or cereals products, in combination with continued breastfeeding, is recommended. Th...

Vitamins are essential for improving and maintaining human health, and the main source of vitamins is the diet. Measurement of the quantities of water-soluble vitamins in common food materials is important to understand the impact of vitamin intake on human health, and also to provide necessary information for regulators to determine adequate intakes. Liquid chromatography (LC) and mass spectro...

Purpose: Vitamin D, a fat-soluble secosteroid, has a significant role in bone metabolism and helps calcium absorption in the body. Since vitamin D concentration is altered in fortified foods and dietary supplements, the actual amount of vitamin D may differ from the label value. Methods: In this study, the concentrations of vitamin D2 and D3 of fortified bread sample were analytically determine...