Salt intake assessed by 24 hour urinary sodium excretion of Moroccan adults: A pilot study

BackgroundHypertension is a serious public health problem in Morocco. The objective of this pilot study was to estimate the daily salt intake of Moroccan adults by measuring 24-hour urinary sodium excretion.MethodsIn this study, 132 participants were recruited from the central region of Morocco. The individual information of the participants was collected using a standard questionnaire of World Health Organization (WHO). Verbal instructions were given to the participants for the 24-hour urine collection. All participants were given 5 liters plastic containers (with 1 g of boric acid for conservation purposes) to collect 24-hour urine excretion. Sodium, potassium and creatinine levels were measured using 24-hour urine samples.ResultsFrom the 132 participants that participated to the study, only 119 participants were included in the analysis. The average of the urine volume was 1128.1 ± 550.9 milliliters, with a range of (500-3300 mL). The daily excretion of sodium and creatinine was 2838.7 ± 1442.5 and 850.4 ± 398.4 mg, respectively. Data analysis revealed that 71.2% of the participants had a daily sodium intake that exceeded the 2000 mg (5 g of salt) recommended by the World Health Organization. The average potassium excretion was 1377.3 ± 642.4 mg/day, which is lower than WHO's recommendation of 3500 mg per day.ConclusionParticipants in this pilot study had a high sodium intake and low potassium intake in Moroccan adults. Public health measures to reduce sodium and increase potassium consumption in order to decrease the population's risk of high blood pressure and heart disease are recommended.     

Neuromedin U – a new target in obesity

With the increasing prevalence of obesity, effective therapies are urgently required. When neuromedin U was administered intracerebroventricularly to rats there was a marked decrease in weight, whereas injection of an antibody to neuromedin U increased food intake. Unlike wild type, Nmu^-/- mice become obese when freely fed ordinary mouse chow. The plasma levels of insulin, leptin, total cholesterol, triglycerides and free fatty acids were higher in the Nmu^-/- than wild-type mice. Energy expenditure was lower in Nmu^-/- mice. The anorexigenic effect of neuromedin U was independent of the leptin signalling pathway. Transgenic mice overexpressing neuromedin U have lower body weight, less somatic and liver fat, were hypophagic, and had improved insulin sensitivity. These data establish neuromedin U as a target in obesity.     

A Review of Dietary Selenium Intake and Selenium Status in Europe and the Middle East

This is a systematic review of existing data on dietary selenium (Se) intake and status for various population groups in Europe (including the United Kingdom (UK)) and the Middle East. It includes English language systematic reviews, meta-analyses, randomised controlled trials, cohort studies, cross-sectional and case-control studies obtained through PUBMED searches from January, 2002, to November, 2014, for European data and from 1990 to November 2014, for Middle Eastern data. Reports were selected if they included data on Se intake and status. The search identified 19 European/UK studies and 15 investigations in the Middle East that reported Se intake and Se concentration in water and/or food and 48 European/UK studies and 44 investigations in the Middle East reporting Se status. Suboptimal Se status was reported to be widespread throughout Europe, the UK and the Middle East, and these results agreed with previous reports highlighting the problem. Eastern European countries had lower Se intake than Western European countries. Middle Eastern studies provided varying results, possibly due to varying food habits and imports in different regions and within differing socioeconomic groups. In conclusion, Se intake and status is suboptimal in European and Middle Eastern countries, with less consistency in the Middle East.     

Consumption and Sources of Dietary Salt in Family Members in Beijing

In China, few people are aware of the amount and source of their salt intake. We conducted a survey to investigate the consumption and sources of dietary salt using the “one-week salt estimation method” by weighing cooking salt and major salt-containing food, and estimating salt intake during dining out based on established evidence. Nine hundred and three families (1981 adults and 971 children) with students in eight primary or junior high schools in urban and suburban Beijing were recruited. On average, the daily dietary salt intake of family members in Beijing was 11.0 (standard deviation: 6.2) g for children and adolescents (under 18 years old), 15.2 (9.1) g for adults (18 to 59 years old), and 10.2 (4.8) g for senior citizens (60 years old and over), respectively. Overall, 60.5% of dietary salt was consumed at home, and 39.5% consumed outside the home. Approximately 90% of the salt intake came from cooking (household cooking and cafeteria or restaurant cooking), while less than 10% came from processed food. In conclusion, the dietary salt intake in Beijing families far surpassed the recommended amounts by World Health Organization, with both household cooking and dining-out as main sources of salt consumption. More targeted interventions, especially education about major sources of salt and corresponding methods for salt reduction should be taken to reduce the risks associated with a high salt diet.     

The Contribution of Fortified Ready-to-Eat Cereal to Vitamin and Mineral Intake in the U.S. Population,NHANES 2007–2010

Micronutrients play a pivotal role in achieving and maintaining optimum health across all life stages. Much of the U.S. population fails to meet Estimated Average Requirements (EARs) for key nutrients. This analysis aims to assess the contribution of fortified ready-to-eat cereals (RTEC) to micronutrient intake for U.S. residents aged 2–18, 19–99, and 2–99 years of age according to National Health and Nutrition Examination Survey (NHANES) 2007–2010 data. We used the National Cancer Institute (NCI) method to assess usual intake of 21 micronutrients and the percentage of the population under EARs and above Tolerable Upper Intake Levels (UL). Without fortification of RTECs, the percentage of those aged 2–18 years that were below EARs increased by 155%, 163%, 113%, and 35% for niacin, iron, thiamin, and vitamin A, respectively. For vitamins B6 and zinc, the respective numbers were 118% and 60%. Adults aged 19–99 and 2–99 had lower percentages but similar outcomes. RTECs are associated with improved nutrient adequacy and do not widely affect prevalence above the UL. The data indicate that large proportions of the population fail to achieve micronutrient sufficiency without fortification, and that its use can help Americans reach national nutrient intake goals.     

Weak Satiety Responsiveness Is a Reliable Trait Associated with Hedonic Risk Factors for Overeating among Women

Some individuals exhibit a weak satiety response to food and may be susceptible to overconsumption. The current study identified women showing consistently low or high satiety responses to standardised servings of food across four separate days and compared them on behavioural, psychological and physiological risk factors for overeating and future weight gain. In a crossover design, 30 female participants (age: 28.0 ± 10.6; body mass index (BMI): 23.1 ± 3.0) recorded sensations of hunger in the post-prandial period following four graded energy level breakfasts. Satiety quotients were calculated to compare individuals on satiety responsiveness across conditions. Body composition, resting metabolic rate (RMR), energy intake, food reward and craving, and eating behaviour traits were assessed under controlled laboratory conditions. A distinct low satiety phenotype (LSP) was identified with good consistency across separate study days. These individuals had a higher RMR, greater levels of disinhibition and reported feeling lower control over food cravings. Further, they consumed more energy and exhibited greater wanting for high-fat food. The inverse pattern of characteristics was observed in those exhibiting a consistently high satiety phenotype (HSP). Weak satiety responsiveness is a reliable trait identifiable using the satiety quotient. The LSP was characterised by distinct behavioural and psychological characteristics indicating a risk for overeating, compared to HSP.     

Factors influencing ultra-endurance athletes food choices: an adapted food choice questionnaire

ABSTRACT

Inadequate nutritional intake has been reported during ultra-endurance training and competition. While substandard nutritional knowledge may contribute to inappropriate nutritional choices, the relationship between these variables is often weak. As such, this study investigated the importance of a range of factors to the food choices of ultra-endurance athletes. An existing food choices questionnaire was extended to reflect the main factors proposed to influence the food choices of these athletes. The questionnaire was pilot tested with endurance athletes, during which, it was refined and reassessed for internal consistency and test-retest reliability. Subsequently, 101 experienced ultra-endurance athletes completed the amended questionnaire. Athletes also documented dietary restrictions or strategies employed in preparation for competition. The factors rated as important by the majority of the athletes were “provides me with energy”, “do not cause me gastrointestinal discomfort” and, “are nutritious”. Despite the high importance of the provision of energy, only 38.2% of participants reported following a high carbohydrate diet in preparation for competition. In addition, given that nutritious foods are typically high in fibre, it is likely that this factor may conflict with the avoidance of gastrointestinal discomfort. The potential incompatibility of these factors may help explain the observed suboptimal nutritional intake.