Daily Milk Consumption Research Articles

Drinking water salinity is associated with hypertension and hyperdilute urine among Daasanach pastoralists in Northern Kenya

Water salinity is a growing global environmental health concern. However, little is known about the relation between water salinity and chronic health outcomes in non-coastal, lean populations. Daasanach pastoralists living in northern Kenya traditionally rely on milk, yet are experiencing socioecological changes and have expressed concerns about the saltiness of their drinking water. Therefore, this cross-sectional study conducted water quality analyses to examine how water salinity, along with lifestyle factors like milk intake, was associated with hypertension (blood pressure BP ≥140 mm Hg systolic or ≥90 mm Hg diastolic) and hyperdilute urine (urine specific gravity <1.003 g/mL, indicative of altered kidney function). We collected health biomarkers and survey data from 226 non-pregnant adults (46.9% male) aged 18+ from 134 households in 2019 along with participant observations in 2020. The salinity (total concentration of all dissolved salts) of reported drinking water from hand-dug wells in dry river beds, boreholes, and a pond ranged from 120 to 520 mg/L. Water from Lake Turkana and standpipes, which was only periodically used for consumption when no other drinking sources are available, ranged from 1100 to 2300 mg/L. Multiple logistic regression models with standard errors clustered on households indicate that each additional 100 mg/L of drinking water salinity was associated with 45% (95% CI: 1.09–1.93, P = 0.010) increased odds of hypertension and 33% (95% CI: 0.97–1.83, P = 0.075) increased odds of hyperdilute urine adjusted for confounders. Results were robust to multiple specifications of the models and sensitivity analyses. Daily milk consumption was associated with 61–63% (P < 0.01) lower odds of both outcomes. This considerable protective effect of milk intake may be due to the high potassium, magnesium, and calcium contents or the protective lifestyle considerations of moving with livestock. Our study results demonstrate that drinking water salinity may have critical health implications for blood pressure and kidney function even among lean, active pastoralists.

The association of milk and dairy consumption with iodine status in pregnant women in Oporto region.

The role of milk and dairy products in supplying iodine to pregnant women is unknown in Portugal. The aim of this study was to evaluate the association between milk and dairy product consumption and the iodine status of pregnant women in the IoMum cohort of the Oporto region. Pregnant women were recruited between 10 and 13 weeks of gestation, when they provided a spot urine sample and information on lifestyle and intake of iodine-rich foods. Urinary iodine concentration (UIC) was determined by inductively coupled plasma MS. A total of 468 pregnant women (269 iodine supplement users and 199 non-supplement users) were considered eligible for analysis. Milk (but not yogurt or cheese) intake was positively associated with UIC, in the whole population (P = 0·02) and in the non-supplement users (P = 0·002), but not in the supplement users (P = 0·29). In non-supplement users, adjusted multinomial logistic regression analysis showed that milk consumption <3 times/month was associated with a five times increased risk of having UIC < 50 µg/l when compared with milk consumption ≥2 times/d (OR 5·4; 95 % CI 1·55, 18·78; P = 0·008). The highest UIC was observed in supplement users who reported consuming milk once per d (160 µg/l). Milk, but not yogurt or cheese, was positively associated with iodine status of pregnant women. Despite the observed positive association, daily milk consumption may not be sufficient to ensure adequate iodine intake in this population.

Predictive equations for early-life indicators of future body weight in Holstein dairy heifers

It takes an approximate 2-yr investment to raise a replacement heifer from birth to first calving, and selecting the most productive heifers earlier in life could reduce input costs. Daily milk consumption, serum total protein, pneumonia and scours incidences, body size composite, birth weights, and incremental body weights were collected on a commercial dairy farm from October 1, 2015, to January 1, 2019. Holstein calves (n = 5,180) were fed whole pasteurized nonsalable milk with a 30% protein and 5% fat enhancer added at 20 g/L of milk through an automated calf feeding system (feeders = 8) for 60 d on average. Calves were weighed at birth and several other times before calving. Average birth weight of calves was 40.6 ± 4.9 kg (mean ± standard deviation), serum total protein was 6.7 ± 0.63 mg/dL, and cumulative 60-d milk consumption was 508.1 ± 67.3 L with a range of 179.9 to 785.1 L. Daily body weights were predicted for individual animals using a third-order orthogonal polynomial to model body weight curves. The linear and quadratic effects of cumulative 60-d milk consumption, birth weight, feeder, year born, season born, respiratory incidence, scours incidence, and body size composite score were significant when predicting heifer body weight at 400 d (pBW400) of age. There was up to a 263-kg difference in pBW400 between the heaviest and lightest animal. Birth weight had a significant effect on predicted weights up to 400 d, and for every 1-kg increase in birth weight, there was a 2.5-kg increase in pBW400. Quadratic effect of cumulative 60-d milk consumption was significant up to 400 d. We divided 60-d milk consumption into quartiles, and heifers had the highest pBW400 in the third quartile when 60-d consumption was between 507.8 and 552.5 L. Body size composite score showed a 21.5-kg difference in pBW400 between the top and bottom 25th percentile of heifers. Heifers were 4.2 kg lighter at 400 d if treated for respiratory disease 3+ times during the first 60 d of life compared with heifers not treated for respiratory disease. Measurements that can be obtained in the early life of dairy calves continue to influence heifer growth up to 400 d of age.

Infant Appetite Traits and Early Infant Feeding Practices in Low-Income Hispanic Families

Abstract Objectives This study examined the association of infant appetite traits and exclusive breastfeeding (EBF), BF intensity, early introduction of complementary foods/liquids and 100% fruit juice consumption among Hispanic infants during the first year of life. Methods This study is a cross-sectional analysis of data collected from the “Starting Early Program" randomized controlled obesity prevention trial of low-income, Hispanic mother-child pairs (n = 533). Four infant appetite traits including Food Responsiveness (FR), Enjoyment of Food (EF), Satiety Responsiveness (SR), and Slowness in Eating (SE) were assessed using the Baby Eating Behavior Questionnaire. Each appetite trait was based on a 5-point Likert frequency scale. Infant feeding measures were collected using 24-hour recall methodology and survey based on the Infant Feeding Practices Study II. Linear and logistic regressions assessed the associations between appetite traits and infant feeding practices, specifically 1) EBF, 2) BF intensity (% of daily milk consumption that is breast milk), 3) early introduction to complementary foods/liquids defined as receiving prior to infant age 4 months, and 4) Any 100% fruit juice consumption at age 10 months. Results Of the 473 children with both appetite and infant feeding measures, 48% were male with mean birth weight of 3.4 kg. After adjusting for confounders, infants with higher SE scores had higher odds of EBF duration (≥3 months) (OR = 1.7, P &amp;lt; 0.001), and higher odds of having medium (20% ≤ score ≤ 80%) and high (&amp;gt;80%) BF intensity (OR = 1.8, P = 0.002; OR = 2.5, P &amp;lt; 0.001), compared to infants with lower SE scores. Infants with higher SE and SR were less likely to receive early complementary foods/liquids (OR = 0.59, P = 0.026; OR = 0.51, P = 0.009). Infants with higher EF were more likely to consume any 100% fruit juice at age 10 months (OR = 1.7, P = 0.047). The other appetite traits were not significantly related to infant feeding measures. Conclusions Higher SE was associated with greater EBF and BF intensity. Infants with higher SE and SR were less likely to have early introduction to complementary foods/liquids. Infants with higher EF were more likely to have juice at 10 months. Appetite traits are associated with potentially obesogenic feeding practices and may represent a target for early life infant feeding interventions. Funding Sources USDA AFRI.

Too Much of a Good Thing? Cerebral Sinovenous Thrombosis Due to Excessive Milk Intake Associated Anemia.

In young children, excessive cow's milk intake causes iron-deficiency anemia, which is associated with hypercoagulable states. We present a case series of 4 toddlers with excessive milk intake iron-deficiency anemia and cerebral sinovenous thrombosis. Retrospective chart review of 4 patients was performed for patients with cerebral sinovenous thrombosis and iron-deficiency anemia secondary to excessive milk intake. Iron-deficiency anemia was defined as hemoglobin <11 mg/dL, mean corpuscular volume <70 fL, and serum ferritin <12 μg/L. Excessive milk intake was defined as consumption of >24 oz daily. Clinical, laboratory, and radiographic features were reviewed. Age ranged from 12 to 24 months. Average hemoglobin, hematocrit, mean corpuscular volume, and ferritin levels were 6.1 g/dL, 22.7 g/dL, 52.7 fL, and 3.2 ng/mL, respectively. Daily milk consumption ranged from 40 to 60 oz. All patients presented with focal neurologic deficits, including seizures in 3. The location of cerebral sinovenous thrombosis varied, and 3 patients had venous infarcts, one of them hemorrhagic. All patients had a limited diet and were described as "picky eaters" by their parents, and only 1 had transitioned of a bottle. All patients were treated with anticoagulation, iron supplementation, and extensive dietary counseling to reduce cow's milk intake. Iron-deficiency anemia due to excessive milk intake is an important and preventable etiology of pediatric cerebral sinovenous thrombosis. Focused anticipatory guidance is necessary for at-risk groups to prevent this neurologic emergency.

Vitamin D deficiency among children aged 10-18 years in Sri Lanka

Vitamin D deficiency (VDD) and insufficiency (VDI) are public health problems in many countries, and limited data is available on the prevalence of VDD/VDI in Sri Lanka. To determine the prevalence and associated factors of VDD in children aged 10- 18 years. This was a cross-sectional study among school children aged 10-18 years at national level. A representative sample of 2525 children were recruited from July to November 2017. Serum 25(OH)D concentration and the patterns of vitamin D rich foods consumption were assessed. VDD and VDI cut offs were set at serum 25(OH)D concentrations of <12 ng/mL and 12-20 ng/mL, respectively as defined by global consensus in 2016. The mean serum 25(OH)D level was 19.3±7.4 ng/mL. The prevalence of VDD and VDI were 13.2% (95%CI: 11.9%-14.5%) and 45.6% (95%CI: 43.7%-47.5%), respectively. The prevalence of VDD was highest in the central province (32.2%) and highest prevalence of VDI was in the Inabaragamuwa province (58.9%). VDD and VDI were lowest in North Central province (0.7% and 34.7%, respectively). Significantly higher serum 25(OH)D levels were observed with male gender (p=0.000), BMI for age <-2SD (p=0.000), daily milk consumption (p=0.000) and residing in dry zone (p=0.0 Though Sri Lanka is a tropical country, VDD is prevalent among school children aged 10-18 years. It is important to develop a VDD preventive strategy, especially for high risk groups.

Efeitos da ingestão diária de leite in natura produzido por vacas criadas em diferentes sistemas de menejo sobre variáveis sanguíneas, saúde intestinal e ganho de peso em um modelo animal

O objetivo do presente estudo foi avaliar se o leite de vaca produzido em diferentes sistemas (confinamento ou a pasto) quando consumido interfere em parâmetros sanguíneos e saúde intestinal, assim como a importância do consumo leite diária no crescimento do animal, modelo experimental. Para isso, foram utilizados leite in natura oriundo de duas propriedades com diferentes sistemas de criação (Free Stall – confinado; extensivo - a pastagem) comparado ao leite pasteurizado (UHT), usado como controle. A composição centesimal dos leites foi analisada, separado em alíquotas e posteriormente congelado. 28 ratos foram usados como modelo experimental (modelo animal), por um período de 30 dias, sendo estes divididos em quatro grupos com sete animais cada: leite das vacas criadas no sistema Free Stall (GFS), leite das vacas criadas no sistema a pasto (GP), leite das vacas pasteurizado (GUHT), e animais sem consumo de leite (GC). Volume de 0,7 mL de leite foi oferecido diariamente. Quando comparado ao grupo controle (GC) verificamos diferença (P0.05), no entanto, o tamanho de cripta foi maior nos grupos GP e GFS (P

Electrochemical detection of lead and cadmium in UHT-processed milk using bismuth nanoparticles/Nafion®-modified pencil graphite electrode

Pencil graphite electrodes (PGEs) were modified with bismuth nanoparticles and Nafion® using the drop-coating method. Simultaneous detection of trace cadmium (Cd2+) and lead (Pb2+) in ultrahigh-temperature-processed milk samples were done via anodic stripping voltammetry using the modified PGE as the working electrode. Scanning electron microscopy and energy-dispersive x-ray analyses were conducted for the morphological characterization of the modified PGE. The limit of detection was found to be 7.31 μg/L for Cd2+ and 31.07 μg/L for Pb2+. Trace quantities of Cd2+ and Pb2+ in the milk samples were detected. Results showed that all milk samples have tolerable daily intake less than the World Health Organization's permissible daily consumption of trace heavy metals of 0.83 μg/kgbw based on the average adult body weight (60 kg) and estimated volume of daily milk consumption (0 .5 L).

Konsumsi ikan bersifat protektif terhadap diagnosis stroke pada orang yang pernah terdiagnosis hipertensi di Indonesia

Background: Stroke is a burdensome disease. The prevalence of stroke has increased by 16% over the last 6 years. The biggest risk factor for stroke is hypertension, but consumption of animal products such as meat, fish, eggs, and milk is often associated with the onset of stroke.Objective: To examine the relationship between the frequencies of animal products consumption to the incidence of stroke in 2014/2015 on hypertensive people in 2007/2008.Method: This research was using case control design performed by analyzing longitudinal data derived from Indonesian Family Life Survey (IFLS) 4 and 5 (2007/2008 and 2014/2015). The population of this study was Indonesian aged over 40 years who have been diagnosed with hypertension in IFLS 4.Results: The results of bivariate analysis using Chi Square test and Fisher's exact test found that the variables significantly associated with stroke diagnosis in IFLS 5 were IFLS 5 fish consumption (p=0.027; OR=0.47); IFLS 4 milk consumption (p=0.04; OR=2.97); IFLS 5 hypertension diagnosis (p=0.006; OR=4.03); IFLS 4 diabetes mellitus diagnosis (p=0.033;OR=8.91); and IFLS 5 diabetes mellitus diagnosis (p=0.041; OR=3.73), also IFLS 5 physical activity (p=0.00; OR=0.34).Conclusion: Fish consumption of 2 - 7 days per week and adequate physical activity is associated with a decreased risk of stroke in a population that has been diagnosed with hypertension. Daily milk consumption, hypertension diagnosis, and diabetes mellitus diagnosis may increase the risk of stroke.

Human brucellosis in Rio Grande do Norte, Brazil

Background: Brucellosis or Malta fever is a zoonotic disease caused by intracellular cocobacilli gram negative aerobic of the genus Brucella. Although it being transmitted to humans since 1859, the correct diagnosis and treatment are challenging. Brucellosis is prevalent in males, farmers and laboratories professionals. The human Brucellosis is most commonly transmitted by the consumption of raw dairy products, aerosol inhalation or direct contact with infected animal. Methods: Data were obtained through medical records review, physical examination findings and laboratory results. Case: A 64-year-old male farmer presented to the infectious disease department with a 30-day history of moderate fever, asthenia and appetite loss. Previously diagnosed with rheumatoid arthritis, he was in chronic use of prednisone (10 mg/day). In addition, he was using glibenclamide and losartan for diabetes mellitus and hypertension, respectively. Posterior to hospital admission, he had been unsuccessfully treated with empirical intravenous antibiotics (ceftriaxone, metronidazole, gentamicin, oxacillin). After three weeks of hospitalization, the patient reported dry cough and abdominal pain in the right upper quadrant. The clinical investigation turned to the suspicion of brucellosis when the patient detailed his daily cow's milk consumption and direct contact with goats. Therefore, serology revealed the presence of high level of antibody against Brucella, being positive for the IgM fraction. He initiated treatment with rifampicin and ciprofloxacin in the following 6 weeks. As his condition improved, he was discharged and referred to an outpatient clinic, remaining asymptomatic. Results: There are few academic publications focused in brucellosis in the medical field. Considered an occupational disease, human Brucellosis remains a common disease in rural areas. Due to the lack of specific symptoms, its diagnostic requires extensive knowledge in infectious diseases and epidemiology. Conclusion: This case highlights the importance of brucellosis serology, as well as preventive programs and educational interventions. The provision of diagnostic tests in endemic regions might enhance the probability of diagnosis and facilitate the effective treatment of human brucellosis worldwide.

Children with cow's milk allergy following an elimination diet had normal growth but relatively low plasma leptin at age two.

To assess nutrient intake, growth and nutritional status of infants with cow's milk allergy (CMA) who follow a therapeutic elimination diet since the first few months of life. Sixty infants younger than four months of age with challenge-proven CMA and 60 healthy age-matched children were investigated. Anthropometric and body composition (BC) were assessed up to 24 months. Dietary intake was recorded by the parents for three consecutive days before visits at 6, 12, 18 and 24 months. Blood albumin, prealbumin, retinol binding protein and metabolic-related hormones were examined at 24 months. The average age at enrolment was 2.9 ± 1.0 months. At the end of the follow-up, there were no differences in daily milk consumption, nutrient intake, weight and height z scores or BC measures between the groups; however, the plasma leptin level was lower in infants with CMA (1.67 ± 1.03 vs 2.05 ± 1.48) (ng/mL) (p < 0.05) compared to healthy children. Children with CMA who followed an elimination diet could achieve a normal nutritional status, except for relatively lower plasma leptin levels, at the age of 2. Further studies with larger cohorts and research on the long-term consequences of these early differences are needed.

Milk: Bioactive Components and Role in Human Nutrition

In the current Special Issue, numerous and different aspects related to milk, an important component of a well-balanced diet, are presented.[...]

Association of maternal breast milk and serum levels of macronutrients, hormones, and maternal body composition with infant's body weight.

This study was aimed to investigate the association of maternal serum and breast-milk levels of macronutrients, hormones, growth factors, and maternal body composition with infant's body weight. Eighty mother-infant pairs comprised 40 with overweight or obese infant and 40 with normal-weight infant were enrolled in this study. The level of ghrelin, Leptin, adiponectin, EGF, and IGF1 in plasma and breast milk were assessed. Daily breast milk intake and macronutrient concentration along with anthropometric indices of mother-infant pairs were also assessed. No significant differences were observed in concentrations of serum hormones between two groups (p > 0.05). However, hormones levels in maternal serum were higher than those in breast milk. A significant positive correlation was found between serum EGF and ghrelin (r = 0.57, p = 0 < 0001). Higher IGF1 in serum showed a significant association with its milk counterpart (r = 0.37). Current mother's weight was associated with infant's weight at the 2nd and 6th month (B = 0.023 p = 0.04, B = 0.055 p = 0.005). The breast-milk macronutrient content was not comparable between two groups. However, the average daily breast milk consumption in obese infants was higher than normals (p = 0.001). Milk EGF and leptin were related to a decrease of 59% and 46% the odds of obese infant development, respectively. There was a significant association of milk EGF and ghrelin with birth weight (B = -0.19, p = 0.04 and B = -0.2, p = 0.04, respectively), and also serum leptin with infant's body weight at the 6th month. Our findings provide a positive association of maternal weight, daily breast milk intake, EGF, and ghrelin with infant's body weight.

Overweight and obesity are associated with lower vitamin D status in Canadian children and adolescents.

There is evidence that 25-hydroxyvitamin D levels are lower in overweight and obese youth. This study examined the relationship between weight status and 25-hydroxyvitamin D, while controlling for confounders, in Canadian youth. Plasma 25-hydroxyvitamin D from subjects aged 6 to 17 years from the Canadian Health Measures Survey cycles 1 (2007 to 2009) and 2 (2009 to 2011) was used. Sex-specific multiple linear regression and logistic regressions examined the relationship of overweight and obesity (body mass index ≥ 85th percentile) with 25-hydroxyvitamin D levels and the odds of 25-hydroxyvitamin D <40 nmol/L and <50 nmol/L. The prevalence of risk of vitamin D deficiency (25-hydroxyvitamin D < 30 nmol/L) was 6% (95% confidence interval [CI] 3.26% to 10.12%). Vitamin D inadequacy, estimated by levels <40 nmol/L, was 15% (95% CI 10.34% to 20.39%; 19% [95% CI 13.1 to 25.6] for teenagers). Seventy per cent (95% CI 63.59 to 75.17) had levels >50 nmol/L, consistent with achieving the Recommended Dietary Allowance. In adjusted analyses, overweight/obesity (1/3 of subjects) was independently associated with lower 25-hydroxyvitamin D for both sexes after adjustment for age, race, income, season, vitamin D supplementation and daily milk consumption. For 25-hydroxyvitamin D <40 nmol/L, the overweight/obese odds ratio for males was 2.63 (95% CI 1.34 to 5.18). For 25-hydroxyvitamin D <50 nmol/L, overweight/obese odds ratios were 2.19 (95% CI 1.46 to 3.28) for males and 1.39 (95% CI 1.05 to 1.84) for females. This study confirms the inverse association between adiposity and serum concentrations of 25-hydroxyvitamin D in Canadian youth and the independent association of overweight/obesity to 25-hydroxyvitamin D level and vitamin D status after adjustment for other factors.

The efficacy of individualized swallowing training for premature infants with feeding disorders: A randomized controlled trial

Objective To observe the effect of individualized swallowing training in the neonatal intensive care unit on the swallowing function of premature infants with feeding disorders. Methods Sixty-two preterm (28 to 32 weeks) infants with feeding disorders were randomly divided into a treatment group (n=34) and a control group (n=28). Both groups were given routine gastric tube feeding, but the treatment group was additionally provided with individualized swallowing training twice a day for 2 weeks, including oral sensory and motor stimulation, milking, family participation, a better environment and a selection of feeding tools. The subjects′ daily milk consumption and weight were recorded, along with the age when the gastric tube was removed and the total length of the hospital stay. Results The treatment group showed significantly greater improvement than the control group in their daily milk consumption and weight gain, though both groups showed significant improvements. The average time to removing the gastric tube and the average hospital stay were both significantly shorter for the treatment group than for the control group. Conclusion Individualized swallowing training can effectively improve sucking and swallowing skills and shorten the period of using a gastric tube and the total hospital stay for premature infants. Key words: Premature neonates; Feeding disorders; Swallowing training; Body weight

Dairy intake and risk of type 2 diabetes

The effect of total dairy products, milk, and calcium intake on risk of type 2 diabetes (T2D) is uncertain, particularly in the Chinese population. The present study was based on a prospective cohort of 63,257 Chinese men and women aged 45-74 years during enrollment (1993-1998) in Singapore. Dietary information was obtained using a validated 165-item semi-quantitative food-frequency questionnaire. Information about newly diagnosed T2D was collected by self-report during two follow-up interviews in 1999-2004 and 2006-2010. Cox proportional hazard regression method was used to estimate hazard ratios (HRs) and their 95% confidence intervals (CIs) in 45,411 eligible participants. Incidence rate (95% CI) of T2D was 10.5 (10.2-10.8) per 1000 person-years. Intake of dairy food was significantly associated with reduced T2D risk; compared with the lowest quartile, HRs (95% CI) for the second, third and fourth quartiles of dairy intake were 0.98 (0.91-1.06), 0.96 (0.89-1.03) and 0.90 (0.83-0.98), respectively, after adjustment for potential confounders at baseline (P-trend=0.01). Daily drinkers of milk had a significant 12% reduction in T2D risk compared with non-drinkers. While dairy calcium was associated with a decreased risk of T2D (HR comparing extreme quartiles 0.84; 95% CI 0.76-0.93; P-trend=0.001), no association was found for non-dairy calcium (HR 1.02; 95% CI 0.92-1.14; P-trend=0.61). In this large cohort study of Chinese adults, dairy product intake and daily milk consumption was associated with a statistically significant, although modest, decrease in risk of developing T2D, which may be independent of its calcium content.

Trends in Beverage Consumption Among High School Students - United States, 2007-2015.

Beverages play an important role in the diets of adolescents because they help to maintain hydration and can provide important nutrients, such as calcium, vitamin D, and vitamin C (1). However, some beverages, such as sugar-sweetened beverages (SSBs) (e.g., soda or pop), provide calories with no beneficial nutrients. Beverage consumption patterns among American youth have changed over time; however, little is known about differences in consumption of various beverages by demographic characteristics such as grade in school, free/reduced price lunch eligibility, and race/ethnicity (2). CDC analyzed data from the 2007-2015 national Youth Risk Behavior Surveys (YRBS) to assess whether the prevalence of drinking non-diet soda or pop (soda), milk, and 100% fruit juice (juice) has significantly changed over time among U.S. high school students. During 2007-2015, daily soda consumption decreased significantly from 33.8% to 20.5%. During 2007-2011, daily milk and juice consumption did not significantly change, but during 2011-2015 daily milk and juice consumption decreased from 44.3% to 37.4% and from 27.2% to 21.6%, respectively. Although a decrease in daily soda consumption is a positive change, soda consumption remains high. Although there is not a specific recommendation for sugar-sweetened beverage consumption, the Dietary Guidelines for Americans 2015-2020 recommend that U.S. residents reduce sugar-sweetened beverage and sweet consumption to reduce intake of added sugars to less than 10% of calories per day. The Dietary Guidelines for Americans 2015-2020 recommend that persons choose beverages with no added sugars, such as water, in place of sugar-sweetened beverages, as one strategy for achieving the added sugars recommendation. Adolescents might need additional support in choosing more healthful beverages, such as low-fat milk, in place of SSBs.

Associated Factors of Milk Consumption among Students: Using Health Belief Model (HBM)

BackgroundAmong various food products, milk and dairy products are among the most basic nutrient foods. The consumption of milk and dairy products in Iran is much lower than the global rate of per capita consumption. This study used Health Belief Model to determine associated factors of milk consumption among 7-9th students.Materials and MethodsThis cross-sectional descriptive analytical study was conducted on seventh to ninth grade students in the city of Qom. Using multistage cluster sampling method, a total of 390 students were enrolled onto the study. In order to collect data in this study, we used a researcher made questionnaire which was designed based on health belief model. Using SPSS version 20.0 software, the collected data was analyzed via descriptive statistics and independent t-test and Chi-square test.ResultsOf all the participants, 41% consumed milk daily and 59% did not consume milk. The perceived benefits (P=0.007), perceived barriers (P< 0.001), perceived self-efficacy (P<0.001) had statistically significant relationships with daily milk consumption. Accordingly, the scores of perceived benefits and perceived self-efficacy for milk consumption among students who consumed milk daily were higher than those in students who did not consume milk daily.ConclusionThe daily milk consumption associated with perceived benefits, perceived barriers and perceived self-efficacy. Therefore, there is a need to utilize educational programs based on health belief model for increasing of milk consumption.

Daily milk consumption and all-cause mortality, coronary heart disease and stroke: a systematic review and meta-analysis of observational cohort studies.

BackgroundObservational studies and meta-analyses relating milk consumption by adults to all-cause mortality, coronary heart disease and stroke have obtained contradictory results. Some studies found a protective effect of milk consumption, whilst other found an increased risk.MethodsWe performed a systematic literature search until June 2015 on prospective studies that looked at milk consumption, all-cause mortality, coronary heart disease and stroke. Random-effect meta-analyses were performed with dose-response.ResultsTwenty-one studies involving 19 cohorts were included in this meta-analysis, 11 on all-cause mortality, 9 on coronary heart disease, and 10 on stroke. Milk intake ranged from 0 to 850 mL/d. The summary relative risk (SRR) for 200 mL/d milk consumption was 1.01 (95% CI: 0.96–1.06) for all-cause mortality, 1.01 (95% CI: 0.98–1.05) for fatal and non fatal coronary heart disease, and 0.91 (95% CI: 0.82–1.02) for fatal and non fatal stroke. Stratified analyses by age, Body Mass Index, total energy intake and physical acitivity did not alter the SRR estimates. The possibility of publication bias was found for all cause mortality and for stroke, indicating a gap in data that could have suggested a higher risk of these conditions with increased milk consumption.ConclusionsWe found no evidence for a decreased or increased risk of all-cause mortality, coronary heart disease, and stroke associated with adult milk consumption. However, the possibility cannot be dismissed that risks associated with milk consumption could be underestimated because of publication bias.Electronic supplementary materialThe online version of this article (doi:10.1186/s12889-016-3889-9) contains supplementary material, which is available to authorized users.

Survey of informal milk retailers in Nairobi, Kenya and prevalence of aflatoxin M1 in marketed milk

Aflatoxins are toxic by-products of fungi contaminating maize and other crops; they can be carried over into milk, meat and eggs when livestock eat aflatoxin-contaminated feed or fodder. People who consume such animal products are exposed to the toxins. To assess the aflatoxin contamination status in marketed raw milk and associated risk factors in peri-urban Nairobi, we conducted a census of raw milk retailers in Dagoretti Division, Nairobi, Kenya. Structured questionnaires were filled in by face-to-face interviews with all retailers who agreed to participate in this study. Small portions of milk were purchased from each respondent and tested for aflatoxin M1 (AFM1) using competitive enzyme-linked immunosorbent assay (cELISA) tests. Geographic coordinates of each eligible retailer were recorded. A total of 350 milk retailers were visited and 344 were plotted on a map. Of these, 250 retailers answered the questionnaire and a milk sample from each of 200 retailers underwent cELISA analysis for AFM1. Four types of businesses were found: kiosks (71%), dairy shops (21%), street or mobile vendors (3%) and grocery stands (1%); for 4% the business type was not identified. Milk was mainly sourced directly from dairy farms (59%) or from intermediate distributors (35%). Most retailers sold less than 20 litres per day of raw milk. The mean daily milk consumption of the milk retailers’ households was 940 ml for adults and 729 ml for children. Although 58% of retailers had heard about aflatoxins and the majority of them agreed that aflatoxins could be present in milk, only 29% believed that “milk safety cannot be solely judged by sight or taste” and only 6% that “milk is not completely safe even after boiling”. The cELISA test found the mean concentration of AFM1 was 128.7 parts per trillion (ppt) (median=49.9; 95% confidence interval=3.0–822.8) with a maximum of 1675 ppt. Overall, 55% of samples exceeded the European Union maximum level of 50 ppt and 6% exceeded the recommended maximum level of the United States Food and Drug Administration of 500 ppt. Compared to milk from street vendors, a significantly higher amount of AFM1 was detected in milk from kiosks and dairy shops, especially when the milk was sourced from farms without an intermediate distributor. Our findings indicate the need to better understand and manage aflatoxin in milk in Nairobi. Keywords: Aflatoxin M1, Kenya, milk, dairy value chain, milk retailers, Dagoretti, mycotoxin, informal milk marketing