Reference Daily Intake

About: Reference Daily Intake is a research topic. Over the lifetime, 1564 publications have been published within this topic receiving 52794 citations.

Fat gram target to achieve high energy intake in cystic fibrosis.

Abstract: Objective: Higher fat and energy intakes confer a survival advantage in cystic fibrosis (CF). There is a need to develop effective nutrition programmes that ensure optimal energy intake in CF. Methodology: A cross-sectional measurement of clinical characteristics and energy and fat intakes in patients attending the CF outpatients clinic of the John Hunter Hospital, Newcastle was undertaken. Twenty-nine subjects, mean age 12 years (range 4.3–20.2), completed weighed food records to determine the contribution of fat to the percentage of the recommended energy intake obtained and to document use of pancreatic enzyme replacement therapy. Results: Diets with a high percentage of energy derived from fat did not guarantee that individuals with CF met their energy requirements. Subjects with total fat intakes of 100 g per day or greater, however, achieved in excess of 110% recommended daily intake (RDI) for energy. Up to 47% of subjects consumed more pancreatic enzyme replacement capsules than shown to give maximum effectiveness. Conclusion: Setting a 100 g daily fat target is a realistic way of ensuring high energy intakes in CF. Fat ready reckoners would identify the fat content of food and prescribe specific numbers of pancreatic enzyme replacement capsules to be consumed with each meal or food item.

Salt (sodium chloride) content of retail samples of Nigerian white bread: implications for the daily salt intake of normotensive and hypertensive adults

Abstract: Background Bread has been identified as a major contributor to the excessive salt (sodium chloride) intake of consumers in many countries, some of which have very high incidences of hypertension and related cardiovascular complications, such as stroke. This has prompted a global rise in interest in the salt content of breads produced and consumed in many other countries. Methods The sodium contents of retail samples of 100 brands of Nigerian white bread were determined by photometry with a view to estimating the relative contribution of bread to the recommended daily sodium intake of both normotensive and hypertensive adults in the country. Results The salt content of the bread samples varied extensively, ranging from 0.51 g per 100 g (0.51%) to 1.8 g per 100 g (1.8%). The average salt content was 1.36 g per 100 g. Based on an estimated consumption of six slices of bread (about 180 g) per meal of bread, this equates to a daily intake of between 0.99 g and 3.33 g of salt from bread alone. This represents between 19.8% and 66.6% of the recommended daily allowance of 5 g for normotensive adults, and between 24.75% and 83.25% of the recommended daily allowance of 4 g for hypertensive adults. Conclusions The consumption of some brands of bread by normotensive and hypertensive adults puts them at great risk of exceeding their recommended daily allowance for salt. Thus, there is an urgent need to regulate the amount of salt added to bread. In the interim, compelling bakers to declare the salt content of their products on the packaging could help consumers, especially hypertensive adults, avoid brands with a high salt content.

Iron status and dietary intake of Chinese pregnant women with anaemia in the third trimester.

Abstract: Anaemia in pregnancy is a major public health problem in China. Anaemia in pregnant women may be related to dietary intake of nutrients. To examine the relationship between iron status and dietary nutrients, a cross-sectional study in pregnant women was carried out. The intake of foods and food ingredients were surveyed by using 24-h dietary recall. Blood haemoglobin, haematocrit, serum iron, serum ferritin, transferrin and soluble transferrin receptor were measured in 1189 clinically normal pregnant women in the third trimester of pregnancy. The results showed that the average daily intake of rice and wheat was 504.2 g in the anaemia group and 468.6 g in the normal group. Carbohydrates accounted for 63.69% and 63.09% of energy in the anaemia and normal groups, respectively. Intake of fat was very low; 18.38% of energy in anaemia group and 19.23% of energy in normal group. Soybean intake was 109.4 g/day and 63.6 g/day in the anaemia and normal groups, respectively (P < 0.001). There were lower intakes of green vegetables (172.1 g/day) and fruits (154.9 g/day) in the anaemia group than in the normal group (246.2 g/day green vegetables (P < 0.001) and 196.4 g/day fruit (P < 0.001)). Intakes of retinol and ascorbic acid were much lower in the anaemia than in the normal group (P < 0.001). In the anaemia group, vitamin A intake was only 54.76% of the Chinese recommended daily allowance (RDA) and ascorbic acid intake was 53.35% of the Chinese RDA. Intake of total vitamin E was 14.55 mg/day in the anaemia group compared with 17.35 mg/day in the normal group (P < 0.016). Moreover, intake of iron in pregnant women with anaemia was slightly lower than that in the normal group. Comparison of iron status between the anaemia and normal groups found serum iron in women with anaemia at 0.89 microg/L, which was significantly lower than 1.09 microg/L in the normal group (P < 0.001). There were lower average values of ferritin (14.70) microg/L) and transferrin (3.34 g/L) in the anaemia group than in the normal group (20.40 microg/L ferritin (P < 0.001) and 3.44 g/L transferrin (P < 0.001)). Soluble transferrin receptor was significantly higher (32.90 nmol/L) in the anaemia than in the normal group (23.58 nmol/L; P < 0.001). The results of this study indicate that anaemia might be attributed to a low iron intake, a low intake of enhancers of iron absorption and a high intake of inhibitors of iron absorption from a traditional Chinese diet rich in grains.

An intervention programme for improving the nutritional status of children aged 2-5 years in Alexandria.

Abstract: We assessed the effect of a selected intervention on the nutritional status of 2-5-year-old children in day care centres. Using a longitudinal prospective pretest/post-test intervention design, 974 children from 3 day care centres in Alexandria were followed for 1 year. Anthropometric measurements and 3-day 24-hour recall data were gathered at base line and dietary intake was calculated and compared with recommended daily allowances. An intervention programme was implemented through the establishment of kitchens in the 3 centres, provision of 2 meals/day, nutrition education for parents and training of supervisors. Baseline data revealed deficient intake of most nutrients especially calcium, calories, vitamin C and iron. Post-intervention test revealed improvement in mothers' nutrition knowledge and the percentage of anaemic children decreased from 47.3% to 14.2%. A decrease in the percentage of underweight, stunted and wasted was also observed. The cost of the programme per child per year was US$ 20.5.

Dietary patterns and nutrient intake of adult women in south-east China: a nutrition study in Zhejiang province

Abstract: This study documents the dietary patterns and nutrient intake of 652 adult women living in south-east China. Compared with data from previous national surveys and other nutrition studies in China, the results show different dietary patterns. The major differences include a greater consumption of vegetables, fruits and animal foods, but a lower consumption of cereal and tuber foods. The mean daily nutrient intakes of the urban women met the Chinese recommended dietary allowances. However, the situation was different in rural areas, where women had lower mean intakes of vitamins and minerals. There were also significant differences in dietary pattern and food consumption between these two groups of women. Further improvements in dietary intake for those residing in the south-east rural areas of China are needed.