Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 234
Filtrar
1.
Nutrients ; 15(20)2023 Oct 17.
Artigo em Inglês | MEDLINE | ID: mdl-37892470

RESUMO

Attention deficit hyperactivity disorder (ADHD) significantly affects the well-being of medical students in various aspects. Sugar-sweetened beverages (SSBs) pose a potential risk of ADHD. Our study aimed to determine the prevalence of ADHD symptoms and the association between consumption of added sugar in common beverages and ADHD symptoms in Thai medical students. An online cross-sectional survey was conducted among medical students at Chiang Mai University from May 2022 to April 2023. The consumption of added sugar from common beverages in Thailand was assessed using the Thai Adolescence Sugar Sweetened Beverage Intake (THASSI) questionnaire. An Adult ADHD Self-Report Scale (ASRS) score ≥ 3 identified the presence of ADHD symptoms. Multivariable logistic regression was used for the analysis. Of 441 participants, 29.9% had ADHD symptoms. Daily consumption of added sugar from beverages higher than 25 g/day showed an increased risk of ADHD symptoms (adjusted odds ratio (OR) 1.80, 95%CI 1.15 to 2.84, p = 0.011). The same trend was observed when using the sex-specific cutoff points (adjusted OR 1.73, 95%CI 1.10 to 2.73, p = 0.018). Higher consumption of added sugar from beverages may increase the risk of ADHD symptoms in Thai medical students. This finding supports the implementation of health policies that promote healthy consumption behaviors among medical students.


Assuntos
Transtorno do Deficit de Atenção com Hiperatividade , Açúcares da Dieta , Estudantes de Medicina , Bebidas Adoçadas com Açúcar , Adolescente , Adulto , Feminino , Humanos , Masculino , Transtorno do Deficit de Atenção com Hiperatividade/epidemiologia , Transtorno do Deficit de Atenção com Hiperatividade/etiologia , Estudos Transversais , População do Sudeste Asiático , Tailândia/epidemiologia , Adoçantes Calóricos , Açúcares da Dieta/administração & dosagem
2.
Eur J Nutr ; 62(8): 3149-3159, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37537344

RESUMO

OBJECTIVES: Overconsumption of non-nutritive sweeteners is associated with obesity, whereas the underlying mechanisms remain controversial. This study aimed to investigate the effects of long-term consumption of nutritive or non-nutritive sweeteners with or without high fat diet on sweet taste receptor expression in nutrient-sensing tissues and energy regulation dependent on sweet-sensing. METHODS: 50 Male Sprague-Dawley rats (140-160 g) were assigned to 10 groups (n = 5/group). All received fructose at 2.5% or 10%, sucralose at 0.01% or 0.015% or water with a normal chow diet or high fat diet for 12 weeks. Food and drink intake were monitored daily. Oral glucose tolerance test and intraperitoneal glucose tolerance test were performed at week 10 and 11 respectively. Serum was obtained for measurement of biochemical parameters. Tongue, duodenum, jejunum, ileum, colon and hypothalamus were rapidly removed to assess gene expression. RESULTS: Long-term consumption of sweeteners impaired glucose tolerance, increased calorie intake and body weight. A significant upregulation of sweet taste receptor expression was observed in all the four intestinal segments in groups fed 0.01% sucralose or 0.015% sucralose, most strikingly in the ileum, accompanied by elevated serum glucagon-like peptide-1 levels and up-regulated expression of sodium-dependent glucose cotransporter 1 and glucose transporter 2. A significant down-regulation in the tongue and hypothalamus was observed in groups fed 10% fructose or 0.015% sucralose, with alterations in hypothalamic appetite signals. The presence of high fat diet differentially modulates sweet taste perception in nutrient-sensing tissues. CONCLUSIONS: Long-term consumption of whether nutritive sweeteners or non-nutritive sweeteners combined with high fat diet contribute to dysregulation of sweet taste receptor expression in oral, intestinal and central nervous tissues.


Assuntos
Adoçantes não Calóricos , Ratos , Animais , Masculino , Adoçantes não Calóricos/efeitos adversos , Dieta Hiperlipídica/efeitos adversos , Adoçantes Calóricos , Paladar , Ratos Sprague-Dawley , Frutose/efeitos adversos
3.
Int J Food Sci Nutr ; 73(7): 927-939, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35708269

RESUMO

There are doubts about the impact of non-nutritive sweeteners consumption on lipogenic and glycolytic metabolism. Therefore, the objective was to determine the effects of chronic consumption of sweeteners on the activity levels of the enzymes glucokinase (GK), phosphofructokinase-1 (PFK-1), pyruvate kinase (PKL), acetyl coenzyme A carboxylase (ACC), and fatty acid synthase (FAS) in livers' extracts. Groups of male and female Wistar rats drank solutions of sweeteners for 480 days: Sucrose 10%, glucose 14%, fructose 7%, acesulfame K 0.05%, aspartame:acesulfame mixture 1.55%, sucralose 0.017%, saccharin 0.033%, and a control group. The enzymatic activity in livers' extracts was determined. Likewise, the levels of glucose, triglycerides, insulin, glucagon, and leptin were determined. In both genders, there were significant differences in the levels of enzymatic activity, hormonal, and biochemical parameters due to sweeteners consumption. The highest glycolytic and lipogenic enzyme activity levels were observed in the groups that ingested nutritive sweeteners and saccharin.


Assuntos
Adoçantes não Calóricos , Sacarina , Animais , Ratos , Feminino , Masculino , Sacarina/metabolismo , Aspartame , Adoçantes não Calóricos/farmacologia , Leptina , Adoçantes Calóricos , Glucoquinase/metabolismo , Acetil-CoA Carboxilase/metabolismo , Piruvato Quinase/metabolismo , Glucagon/metabolismo , Ratos Wistar , Edulcorantes/farmacologia , Sacarose , Glucose/metabolismo , Insulina/metabolismo , Frutose , Triglicerídeos/metabolismo , Fígado/metabolismo , Ácido Graxo Sintases/metabolismo
4.
Food Chem ; 374: 131817, 2022 Apr 16.
Artigo em Inglês | MEDLINE | ID: mdl-34906808

RESUMO

Maple syrup is a sweet-tasting product prepared by boiling and concentrating the sap of sugar maple (Acer saccharum March). Because of its potential health benefits (except for people with diabetes and those with blood sugar problems), desirable flavor, and taste,maple syrup is one of most popular natural products in the world.Maple syrup fundamentally consists of both organic and inorganic components. The composition of maple syrup plays an important role in determining its flavour, smell, color, and distinguishes it from other sugar syrups. Maple syrup constituents have been identified by different analytical techniques typically based onspectroscopy or spectrometry. Herein, we present the first comprehensive review of all available information on the chemical composition and mineralogical residence of maple syrup collected from over 117 years of published literature.


Assuntos
Acer , Adoçantes Calóricos/química , Alimentos , Paladar
5.
Nutrients ; 13(6)2021 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-34072564

RESUMO

This study aims to examine the use of non-nutritive (NNSs) and low-calorie sweeteners (LCSs) in pre-packaged foods in Hong Kong and the differences in the number of NNSs/LCSs used between products from different regions. In a cross-sectional audit, the types of NNSs/LCSs used in 19,915 pre-packaged foods in Hong Kong were examined by searching the ingredients list of the included products for keywords related to 20 common NNSs/LCSs and their respective E-numbers. Prevalence of use of NNSs and LCSs, the co-presence of NNSs/LCSs and free sugar ingredients (FSI), and the number of NNSs/LCSs used in the included foods were computed. Pearson's χ2 test was used to compare the total number of NNSs and/or LCSs used in food items from different regions. Sucralose (E955) was the most commonly used NNS (1.9%), followed by acesulfame K (E950, 1.6%). Sorbitol was the most commonly used LCS (2.9%). Overall, the use of LCSs was less common compared with NNSs (3.7% vs. 4.5%). The use of different types of NNSs varied substantially between food types. Notably, 20.2% of potato crisps and 15.2% of other crisps or extruded snacks contained at least one NNS and/or LCS. Co-presence of FSIs and NNSs/LCSs were most common in confectionery (15.7%) and snack foods (15.5%). Asian prepackaged foods were more likely to contain NNSs/LCSs (10.1%) compared with those from other regions. To conclude, NNSs/LCSs were used in a wide range of non-diet pre-packaged products which could be a public health concern due to their higher consumption frequencies than "diet" products.


Assuntos
Dieta/métodos , Ingestão de Energia , Análise de Alimentos/métodos , Embalagem de Alimentos , Adoçantes não Calóricos/administração & dosagem , Adoçantes Calóricos/administração & dosagem , Estudos Transversais , Análise de Alimentos/estatística & dados numéricos , Hong Kong , Humanos
6.
Cochrane Database Syst Rev ; 5: CD012885, 2020 05 25.
Artigo em Inglês | MEDLINE | ID: mdl-32449201

RESUMO

BACKGROUND: Products sweetened with non-nutritive sweeteners (NNS) are widely available. Many people with type 1 or type 2 diabetes use NNS as a replacement for nutritive sweeteners to control their carbohydrate and energy intake. Health outcomes associated with NNS use in diabetes are unknown. OBJECTIVES: To assess the effects of non-nutritive sweeteners in people with diabetes mellitus. SEARCH METHODS: We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE Ovid, Scopus, the WHO ICTRP, and ClinicalTrials.gov. The date of the last search of all databases (except for Scopus) was May 2019. We last searched Scopus in January 2019. We did not apply any language restrictions. SELECTION CRITERIA: We included randomised controlled trials (RCTs) with a duration of four weeks or more comparing any type of NNS with usual diet, no intervention, placebo, water, a different NNS, or a nutritive sweetener in individuals with type 1 or type 2 diabetes. Trials with concomitant behaviour-changing interventions, such as diet, exercise, or both, were eligible for inclusion, given that the concomitant interventions were the same in the intervention and comparator groups. DATA COLLECTION AND ANALYSIS: Two review authors independently screened abstracts, full texts, and records retrieved from trials registries, assessed the certainty of the evidence, and extracted data. We used a random-effects model to perform meta-analysis, and calculated effect estimates as risk ratios (RRs) for dichotomous outcomes and mean differences (MDs) for continuous outcomes, using 95% confidence intervals (CIs). We assessed risk of bias using the Cochrane 'Risk of bias' tool and the certainty of evidence using the GRADE approach. MAIN RESULTS: We included nine RCTs that randomised a total of 979 people with type 1 or type 2 diabetes. The intervention duration ranged from 4 to 10 months. We judged none of these trials as at low risk of bias for all 'Risk of bias' domains; most of the included trials did not report the method of randomisation. Three trials compared the effects of a dietary supplement containing NNS with sugar: glycosylated haemoglobin A1c (HbA1c) was 0.4% higher in the NNS group (95% CI -0.5 to 1.2; P = 0.44; 3 trials; 72 participants; very low-certainty evidence). The MD in weight change was -0.1 kg (95% CI -2.7 to 2.6; P = 0.96; 3 trials; 72 participants; very low-certainty evidence). None of the trials with sugar as comparator reported on adverse events. Five trials compared NNS with placebo. The MD for HbA1c was 0%, 95% CI -0.1 to 0.1; P = 0.99; 4 trials; 360 participants; very low-certainty evidence. The 95% prediction interval ranged between -0.3% and 0.3%. The comparison of NNS versus placebo showed a MD in body weight of -0.2 kg, 95% CI -1 to 0.6; P = 0.64; 2 trials; 184 participants; very low-certainty evidence. Three trials reported the numbers of participants experiencing at least one non-serious adverse event: 36/113 participants (31.9%) in the NNS group versus 42/118 participants (35.6%) in the placebo group (RR 0.78, 95% CI 0.39 to 1.56; P = 0.48; 3 trials; 231 participants; very low-certainty evidence). One trial compared NNS with a nutritive low-calorie sweetener (tagatose). HbA1c was 0.3% higher in the NNS group (95% CI 0.1 to 0.4; P = 0.01; 1 trial; 354 participants; very low-certainty evidence). This trial did not report body weight data and adverse events. The included trials did not report data on health-related quality of life, diabetes complications, all-cause mortality, or socioeconomic effects. AUTHORS' CONCLUSIONS: There is inconclusive evidence of very low certainty regarding the effects of NNS consumption compared with either sugar, placebo, or nutritive low-calorie sweetener consumption on clinically relevant benefit or harm for HbA1c, body weight, and adverse events in people with type 1 or type 2 diabetes. Data on health-related quality of life, diabetes complications, all-cause mortality, and socioeconomic effects are lacking.


Assuntos
Diabetes Mellitus Tipo 1/dietoterapia , Diabetes Mellitus Tipo 2/dietoterapia , Adoçantes não Calóricos/administração & dosagem , Adulto , Idoso , Viés , Peso Corporal , Diabetes Mellitus Tipo 1/sangue , Diabetes Mellitus Tipo 1/complicações , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/complicações , Feminino , Hemoglobinas Glicadas/análise , Humanos , Masculino , Pessoa de Meia-Idade , Adoçantes não Calóricos/efeitos adversos , Adoçantes Calóricos/administração & dosagem , Placebos/uso terapêutico , Qualidade de Vida , Ensaios Clínicos Controlados Aleatórios como Assunto
7.
Neuron ; 106(5): 778-788.e6, 2020 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-32259476

RESUMO

Postingestive nutrient sensing can induce food preferences. However, much less is known about the ability of postingestive signals to modulate food-seeking behaviors. Here we report a causal connection between postingestive sucrose sensing and vagus-mediated dopamine neuron activity in the ventral tegmental area (VTA), supporting food seeking. The activity of VTA dopamine neurons increases significantly after administration of intragastric sucrose, and deletion of the NMDA receptor in these neurons, which affects bursting and plasticity, abolishes lever pressing for postingestive sucrose delivery. Furthermore, lesions of the hepatic branch of the vagus nerve significantly impair postingestive-dependent VTA dopamine neuron activity and food seeking, whereas optogenetic stimulation of left vagus nerve neurons significantly increases VTA dopamine neuron activity. These data establish a necessary role of vagus-mediated dopamine neuron activity in postingestive-dependent food seeking, which is independent of taste signaling.


Assuntos
Comportamento Apetitivo/efeitos dos fármacos , Neurônios Dopaminérgicos/fisiologia , Adoçantes Calóricos/administração & dosagem , Sacarose/administração & dosagem , Nervo Vago/fisiologia , Área Tegmentar Ventral/fisiologia , Animais , Comportamento Apetitivo/fisiologia , Condicionamento Operante , Alimentos , Camundongos , Camundongos Knockout , Plasticidade Neuronal/fisiologia , Adoçantes não Calóricos/administração & dosagem , Optogenética , Reforço Psicológico , Estômago , Sacarose/análogos & derivados , Canais de Cátion TRPM/genética , Paladar , Área Tegmentar Ventral/citologia
8.
Nutr Diabetes ; 10(1): 1, 2020 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-32066654

RESUMO

BACKGROUND: The mechanisms by which chronic stress increases the risk of non-communicable diseases remain poorly understood. On one hand, chronic stress may increase systemic vascular resistance (SVR) and blood pressure, which may lead to blood vessels injury and altered myocardial perfusion. On the other hand, chronic stress may promote the overconsumption of sugar-containing foods and favor obesity. There is indeed evidence that sweet foods are preferentially consumed to alleviate stress responses. The effects of nutritive and non-nutritive sweeteners (NNS) on hemodynamic stress responses remain however largely unknown. OBJECTIVE/DESIGN: This study aimed at comparing the effects of sucrose-containing and NNS-containing drinks, as compared to unsweetened water, on hemodynamic responses to acute stress in twelve healthy female subjects. Acute stress responses were elicited by a 30-min mental stress (5-min Stroop's test alternated with 5-min mental arithmetic) and a 3-min cold pressure test (CPT), each preceded by a resting baseline period. Hemodynamic stress responses were investigated by the repeated measurement of mean arterial pressure and the continuous monitoring of cardiac output by thoracic electrical bioimpedance measurement. SVR was selected as a primary outcome because it is a sensitive measure of hemodynamic responses to acute stress procedures. RESULTS: With all three drinks, SVR were not changed with mental stress (P = 0.437), but were increased with CPT (P = 0.045). Both mental stress and CPT increased mean arterial pressure and heart rate (all P < 0.001). Cardiac output increased with mental stress (P < 0.001) and remained unchanged with CPT (P = 0.252). No significant differences in hemodynamic responses were observed between water, sucrose and NNS (stress × condition, all P > 0.05). CONCLUSIONS: These results demonstrate that sucrose and NNS do not alter hemodynamic responses to two different standardized acute stress protocols.


Assuntos
Sacarose na Dieta/administração & dosagem , Hemodinâmica/efeitos dos fármacos , Adoçantes não Calóricos/administração & dosagem , Estresse Psicológico/fisiopatologia , Bebidas , Pressão Sanguínea/efeitos dos fármacos , Estudos Cross-Over , Feminino , Nível de Saúde , Voluntários Saudáveis , Humanos , Adoçantes Calóricos/administração & dosagem , Valor Nutritivo , Estresse Fisiológico , Resistência Vascular/efeitos dos fármacos , Adulto Jovem
9.
J Biosoc Sci ; 52(2): 230-247, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31218982

RESUMO

The Nutrition Transition model posits that vegetable oils, animal source foods (ASFs) and caloric sweeteners contribute to increases in adiposity and hence body mass index. Body mass index (BMI) is increasing more rapidly among Latin American populations of low versus high socioeconomic status (SES). The objectives of this study among Costa Rican women were to: (1) compare indicators of adiposity and dietary intake by SES and (2) evaluate the relationship between intake of foods high in vegetable oils, ASFs or caloric sweeteners and body fatness. This cross-sectional study, conducted in 2014-2015, included 128 low-, middle- and high-SES non-pregnant, non-lactating women aged between 25 and 45 years with 1-4 live births. Anthropometry was used to assess BMI, body composition and body fat distribution. Dietary recalls (n = 379) were used to assess dietary intake. Percentage body fat was greater in low- versus high-SES women (31.5 ± 3.9 vs 28.2 ± 4.7%). Skinfold measurements at four sites on the upper and lower body were greater in low- versus high-SES women. Body mass index did not vary in low- versus high-SES women. Intake frequency of foods high in vegetable oils was greater in low- and middle- (1.8 and 1.8 times/day, respectively) versus high- (1.1 times/day) SES women. For individual foods, intake frequency varied significantly by SES for high-fat condiments, fried vegetables, dairy, sweetened coffee/tea and pastries and desserts. Intake frequency of Nutrition Transition food categories was not associated with percentage body fat after adjustment for energy intake. Indicators of body composition provide additional information beyond BMI that are useful in understanding SES-adiposity associations in Latin America. Approaches to understanding diet and adiposity in Latin America that focus on vegetable oils, ASFs and caloric sweeteners should consider within-country variation in the pace of the Nutrition Transition, especially when explaining variation in adiposity by SES.


Assuntos
Adiposidade , Ingestão de Alimentos , Ingestão de Energia , Estado Nutricional , Obesidade/epidemiologia , Classe Social , Tecido Adiposo , Adulto , Animais , Índice de Massa Corporal , Costa Rica/epidemiologia , Estudos Transversais , Comportamento Alimentar , Feminino , Humanos , Carne , Pessoa de Meia-Idade , Adoçantes Calóricos , Óleos de Plantas , Prevalência
10.
Chem Senses ; 44(8): 571-582, 2019 10 17.
Artigo em Inglês | MEDLINE | ID: mdl-31424498

RESUMO

The chemical senses and pharmaceuticals fundamentally depend on similar biological processes, but novel molecule discovery has classically been approached from vastly different vantage points. From the perspective of ingredient and flavor companies, there are countless ingredients that act via largely unknown mechanisms, whereas the pharmaceutical industry has numerous mechanisms in search of novel compounds. Mixtures of agonists can result in synergistic (superadditive) responses, which can be quantified via isobole analysis, a well-proven clinical approach in pharmacology. For the food and beverage industries, bulk (caloric) sweeteners like sugars are a key ingredient in sweetened foods and beverages, but consumers also desire products with fewer calories, which has led to the development of sweet enhancers and sweetener blends intended to achieve synergy or superadditivity. Synergistic mixtures are highly attractive targets commercially as they enable lower usage levels and enhanced efficacy. Although the psychophysical literature contains numerous prior reports of sweetener synergy, others have also noted that classical additive models fail to account for nonlinear dose-response functions. To address this shortcoming, here we systematically apply the isobole method from pharmacology to quantify the presence or absence of psychophysical synergy for binary pairs of sweeteners in a series of 15 separate experiments, each with ~100 adult volunteers (total n = 1576). Generally, these data support the hypothesis that structurally similar sweeteners acting as agonists will not synergize, whereas structurally dissimilar sweeteners binding to overlapping or distal sites can act as allosteric agonists or agonist-antagonists, respectively.


Assuntos
Adoçantes não Calóricos/farmacologia , Adoçantes Calóricos/farmacologia , Receptores Acoplados a Proteínas G/química , Percepção Gustatória/efeitos dos fármacos , Paladar/efeitos dos fármacos , Adolescente , Adulto , Sítios de Ligação , Sinergismo Farmacológico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Moleculares , Adoçantes não Calóricos/química , Adoçantes Calóricos/química , Ligação Proteica , Conformação Proteica em alfa-Hélice , Conformação Proteica em Folha beta , Domínios e Motivos de Interação entre Proteínas , Isoformas de Proteínas/química , Isoformas de Proteínas/metabolismo , Receptores Acoplados a Proteínas G/metabolismo , Relação Estrutura-Atividade , Paladar/fisiologia , Percepção Gustatória/fisiologia , Termodinâmica
11.
Food Res Int ; 123: 166-171, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31284964

RESUMO

Grape must market has been rising and there is an increasing interest to use it as a "natural" replacement for traditional sugars. Food or beverages with prebiotic compounds, including fructo-oligosaccharides (FOS), emerge as an alternative for the new health style trend. The aim of this work was to investigate whether the combination of grape must with sucrose was a suitable raw material for the synthesis of FOS. This way, a prebiotic syrup containing fructose and FOS, potentially useful for the formulation of foods and beverages, could be obtained. The main process consisted of three stages, namely conditioning of grape must (oxidation of the initial glucose concentration, stage 1), synthesis of FOS [incorporation of 20, 30 and 55% (w/w) sucrose, and 3.5% v/v Viscozyme L - 4.2 U/mg-, stage 2], and conditioning of the final product (oxidation of the glucose generated during the synthesis, stage 3). At stage 1, glucose concentration decreased from 222.8 mg/mL to 47.2 mg/mL, representing a decay of about 80% regarding the initial concentration of glucose. At stage 2, incorporating 20% (w/w) sucrose was not enough to impulse FOS synthesis. In turn, although 30 and 55% (w/w) sucrose produced very similar concentrations of total FOS (DP3 + DP4), 55% (w/w) sucrose led to higher glucose generation and less DP4 formation. Hence, 30% (w/w) sucrose was the condition selected for the synthesis and further conditioning of the obtained product (stage 3). In these conditions, the final product consisted of more than 30% of short chain FOS (19% and 13% of DP3 and DP4, respectively), 55% fructose and less than 11% of glucose and sucrose. Considering that fructose has approximately double sweetening power than glucose, the obtained syrup has a bigger sweetening power in comparison with the original grape must, also providing the prebiotic benefits of FOS.


Assuntos
Oligossacarídeos/química , Sacarose/análise , Vitis/química , Frutose/análise , Glucose/análise , Modelos Teóricos , Adoçantes Calóricos/análise , Prebióticos/análise , Reprodutibilidade dos Testes
12.
Nutrients ; 11(8)2019 Jul 25.
Artigo em Inglês | MEDLINE | ID: mdl-31349678

RESUMO

Postprandial hypotension (PPH) is under-recognised, but common, particularly in the elderly, and is of clear clinical importance due to both the independent association between PPH and an increase in mortality and lack of effective management for this condition. Following health concerns surrounding excessive consumption of sugar, there has been a trend in the use of low- or non-nutritive sweeteners as an alternative. Due to the lack of literature in this area, we conducted a systematic search to identify studies relevant to the effects of different types of sweeteners on postprandial blood pressure (BP). The BP response to ingestion of sweeteners is generally unaffected in healthy young subjects, however in elderly subjects, glucose induces the greatest decrease in postprandial BP, while the response to sucrose is less pronounced. The limited studies investigating other nutritive and non-nutritive sweeteners have demonstrated minimal or no effect on postprandial BP. Dietary modification by replacing high nutritive sweeteners (glucose, fructose, and sucrose) with low nutritive (d-xylose, xylitol, erythritol, maltose, maltodextrin, and tagatose) and non-nutritive sweeteners may be a simple and effective management strategy for PPH.


Assuntos
Pressão Sanguínea/efeitos dos fármacos , Hipotensão/induzido quimicamente , Adoçantes não Calóricos/efeitos adversos , Adoçantes Calóricos/efeitos adversos , Período Pós-Prandial , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Hipotensão/fisiopatologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
14.
Nutrients ; 10(11)2018 Nov 15.
Artigo em Inglês | MEDLINE | ID: mdl-30445671

RESUMO

BACKGROUND: Chile has the highest sugar-sweetened beverage (SSB) sales of any country and a growing burden of childhood obesity. This study examines SSB intake in Chilean children after a 5% SSB tax increase in 2014 but prior to marketing, labeling, and school policies implemented in 2016. METHODS: 24-h recalls were collected in 2016 from two cohorts comprised of preschoolers 3⁻5 years of age (n = 961) and adolescents 12⁻14 years of age (n = 770) from low⁻moderate income neighborhoods. Beverages were categorized as regulated or unregulated according to whether they exceeded nutrient thresholds established by the 2016 policies. RESULTS: Preschoolers consumed mainly beverage calories from regulated dairy beverages and substitutes (109 kcal, SD 30), unregulated dairy beverages (102 kcal, SD 24), and regulated fruit and vegetables drinks (44 kcal, SD 20). For adolescents, the greatest contributions came from regulated sodas (77 kcal, SD 47), regulated dairy beverages and substitutes (41 kcal, SD 16), and unregulated coffee and tea (41 kcal, SD 11). Overall, regulated beverages provided a greater proportion of calories than unregulated for preschoolers (15.0% vs. 11.8%) and for adolescents (9.1% vs. 5.0%). CONCLUSIONS: Before major policy implementation, regulated beverages accounted for a higher percentage of energy intake than unregulated beverages among both age groups. Future research will be needed to evaluate the impact of Chile's new policies on sugary beverage intake in children.


Assuntos
Bebidas/estatística & dados numéricos , Açúcares da Dieta/administração & dosagem , Implementação de Plano de Saúde/estatística & dados numéricos , Política Nutricional/legislação & jurisprudência , Adoçantes Calóricos/administração & dosagem , Adolescente , Criança , Pré-Escolar , Chile , Estudos Transversais , Inquéritos sobre Dietas , Ingestão de Energia , Comportamento Alimentar , Feminino , Humanos , Masculino , Impostos/legislação & jurisprudência
15.
Obesity (Silver Spring) ; 26 Suppl 3: S5-S8, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30290076

RESUMO

The use and impact of low-calorie sweeteners (LCS) in relation to the national challenges of overweight and obesity are complex and controversial. Most research on LCS have focused on the prevalence of consumption of LCS in beverages. The 2015 Dietary Guidelines Advisory Committee emphasized dietary patterns and health rather than a focus on specific nutrients or foods. The committee took this approach to shift the national emphasis onto the context of total rather than individual nutrient consumption. A broader research paradigm is needed to elucidate the actual exposure to LCS and how they are consumed within dietary patterns in the US population. National-level databases exist that can be used to broaden scientific understanding of the effects of LCS and health outcomes. These databases are underutilized, and they provide potential tools for grasping a fuller picture of LCS in the US diet.


Assuntos
Dieta/efeitos adversos , Adoçantes não Calóricos/efeitos adversos , Adoçantes Calóricos/efeitos adversos , Obesidade/prevenção & controle , Bebidas/análise , Qualidade de Produtos para o Consumidor , Ingestão de Energia , Qualidade dos Alimentos , Humanos , Política Nutricional , Prevalência
16.
Br J Nutr ; 120(11): 1230-1239, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30375290

RESUMO

Diet, obesity and adipokines play important roles in diabetes and CVD; yet, limited studies have assessed the relationship between diet and multiple adipokines. This cross-sectional study assessed associations between diet, adiposity and adipokines in Mexican Americans. The cohort included 1128 participants (age 34·7±8·2 years, BMI 29·5±5·9 kg/m2, 73·2 % female). Dietary intake was assessed by 12-month food frequency questionnaire. Adiposity was measured by BMI, total percentage body fat and percentage trunk fat using dual-energy X-ray absorptiometry. Adiponectin, apelin, C-reactive protein (CRP), dipeptidyl peptidase-4 (DPP-IV), IL-1ß, IL-1ra, IL-6, IL-18, leptin, lipocalin, monocyte chemo-attractant protein-1 (MCP-1), resistin, secreted frizzled protein 4 (SFRP-4), SFRP-5, TNF-α and visfatin were assayed with multiplex kits or ELISA. Joint multivariate associations between diet, adiposity and adipokines were analysed using canonical correlations adjusted for age, sex, energy intake and kinship. The median (interquartile range) energy intake was 9514 (7314, 11912) kJ/d. Overall, 55 % of total intake was accounted for by carbohydrates (24 % from sugar). A total of 66 % of the shared variation between diet and adiposity, and 34 % of diet and adipokines were explained by the top canonical correlation. The diet component was most represented by sugar-sweetened beverages (SSB), fruit and vegetables. Participants consuming a diet high in SSB and low in fruits and vegetables had higher adiposity, CRP, leptin, and MCP-1, but lower SFRP-5 than participants with high fruit and vegetable and low SSB intake. In Mexican Americans, diets high in SSB but low in fruits and vegetables contribute to adiposity and a pro-inflammatory adipokine profile.


Assuntos
Adipocinas/sangue , Adiposidade/etnologia , Bebidas , Dieta , Açúcares da Dieta/administração & dosagem , Obesidade/etnologia , Tecido Adiposo/metabolismo , Adulto , Ingestão de Energia , Feminino , Frutas , Humanos , Inflamação/metabolismo , Masculino , Americanos Mexicanos , Adoçantes Calóricos/administração & dosagem , Obesidade/prevenção & controle , Verduras , Adulto Jovem
17.
Int J Behav Nutr Phys Act ; 15(1): 97, 2018 10 04.
Artigo em Inglês | MEDLINE | ID: mdl-30286755

RESUMO

BACKGROUND: Although reducing sugar-sweetened beverage (SSB) intake is an important behavioral strategy to improve health, no known SSB-focused behavioral trial has examined maintenance of SSB behaviors after an initial reduction. Guided by the RE-AIM framework, this study examines 6-18 month and 0-18 month individual-level maintenance outcomes from an SSB reduction trial conducted in a medically-underserved, rural Appalachia region of Virginia. Reach and implementation indicators are also reported. METHODS: Following completion of a 6-month, multi-component, behavioral RCT to reduce SSB intake (SIPsmartER condition vs. comparison condition), participants were further randomized to one of three 12-month maintenance conditions. Each condition included monthly telephone calls, but varied in mode and content: 1) interactive voice response (IVR) behavior support, 2) human-delivered behavior support, or 3) IVR control condition. Assessments included the Beverage Intake Questionnaire (BEVQ-15), weight, BMI, and quality of life. Call completion rates and costs were tracked. Analysis included descriptive statistics and multilevel mixed-effects linear regression models using intent-to-treat procedures. RESULTS: Of 301 subjects enrolled in the 6-month RCT, 242 (80%) were randomized into the maintenance phase and 235 (78%) included in the analyses. SIPsmartER participants maintained significant 0-18 month decreases in SSB. For SSB, weight, BMI and quality of life, there were no significant 6-18 month changes among SIPsmartER participants, indicating post-program maintenance. The IVR-behavior participants reported greater reductions in SSB kcals/day during the 6-18 month maintenance phase, compared to the IVR control participants (- 98 SSB kcals/day, 95% CI = - 196, - 0.55, p < 0.05); yet the human-delivered behavior condition was not significantly different from either the IVR-behavior condition (27 SSB kcals/day, 95% CI = - 69, 125) or IVR control condition (- 70 SSB kcals/day, 95% CI = - 209, 64). Call completion rates were similar across maintenance conditions (4.2-4.6 out of 11 calls); however, loss to follow-up was greatest in the IVR control condition. Approximated costs of IVR and human-delivered calls were remarkably similar (i.e., $3.15/participant/month or $38/participant total for the 12-month maintenance phase), yet implications for scalability and sustainability differ. CONCLUSION: Overall, SIPsmartER participants maintained improvements in SSB behaviors. Using IVR to support SSB behaviors is effective and may offer advantages as a scalable maintenance strategy for real-world systems in rural regions to address excessive SSB consumption. TRIAL REGISTRY: Clinicaltrials.gov; NCT02193009 ; Registered 11 July 2014. Retrospectively registered.


Assuntos
Bebidas , Promoção da Saúde/métodos , Adoçantes Calóricos/administração & dosagem , Adolescente , Adulto , Idoso , Índice de Massa Corporal , Feminino , Comportamentos Relacionados com a Saúde , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Fatores Socioeconômicos , Inquéritos e Questionários , Telefone , Virginia , Adulto Jovem
18.
Obesity (Silver Spring) ; 26 Suppl 3: S25-S31, 2018 10.
Artigo em Inglês | MEDLINE | ID: mdl-30070039

RESUMO

Low-calorie sweeteners (LCS) are found in a variety of foods and beverages, yet their role in diet, weight, and obesity-related chronic disease is controversial. This article summarizes proceedings from one of four presentations during a preconference session entitled "Low-Calorie Sweeteners and Weight Management," which took place at the 2017 Obesity Society Annual Meeting in Washington, District of Columbia. The objective of this brief review is to summarize findings of observational and interventional studies of LCS effects on weight and metabolic health and to provide potential explanations for their discrepant results. Key research priorities for advancing the understanding of the role of LCS in weight and chronic disease are also discussed. The existing literature suggests that LCS consumption is consistently associated with obesity, diabetes, and related cardiometabolic conditions in observational studies. Although several plausible mechanisms have been proposed to explain these associations and have received considerable support in cellular and rodent models, the relevance of these mechanisms to humans has yet to be confirmed. Meanwhile, randomized controlled trials demonstrate that NNS may benefit weight loss and weight maintenance. This is the case particularly when LCS are administered in the context of behavioral weight loss support and are consumed knowingly by habitual LCS consumers. Although these findings suggest that LCS may be useful for weight control among those cognitively engaged in weight loss and who are aware of their LCS consumption, LCS administration in these studies does not reflect typical consumption. Furthermore, few interventional studies have assessed the role of LCS on metabolic outcomes other than body weight. Additional factors must be considered before recommending LCS for weight management and chronic disease prevention and further study of LCS effects on a variety of cardiometabolic outcomes, including visceral adiposity and glucose homeostasis is warranted.


Assuntos
Ingestão de Energia , Adoçantes não Calóricos/uso terapêutico , Adoçantes Calóricos/uso terapêutico , Sobrepeso/dietoterapia , Peso Corporal , Promoção da Saúde , Homeostase/efeitos dos fármacos , Humanos , Adoçantes não Calóricos/efeitos adversos , Adoçantes Calóricos/efeitos adversos , Obesidade/prevenção & controle , Sobrepeso/prevenção & controle , Redução de Peso
19.
Am J Prev Med ; 55(3): e70-e77, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30033027

RESUMO

INTRODUCTION: Between 2000 and 2017, a total of 23 states proposed legislation to further restrict Supplemental Nutrition Assistance Program (SNAP) purchases. In the absence of a pilot program, the potential effect of such restrictions is unclear. The objective of this study is to provide insight on the proposed restrictions' effectiveness by characterizing SNAP households' expenditures on current and proposed restricted foods, and comparing them with their cash expenditures. Restrictions on sugar-sweetened beverages, snack foods, and foods ineligible under the Special Supplemental Program for Women, Infants and Children (WIC) are considered. METHODS: The National Household Food Acquisition and Purchase Survey (collected 2012-2013) provided weekly food expenditures for 1,234 SNAP households. Descriptive statistics and t-tests (completed in 2017) were used to characterize and compare households' cash and restricted food expenditures. RESULTS: On average, SNAP households' allocated 7%, 6%, 17%, and 66% of their food expenditures to currently restricted foods, sugar-sweetened beverages, snack foods, and WIC-ineligible foods. Given a sugar-sweetened beverage or snack food restriction, the average SNAP household can cover their restricted expenditures with cash. However, the average household's expenditures on current restricted and WIC-ineligible foods exceed their cash expenditures by a mean of $40.84 (SE=$2.44). Note that results characterize the impact of proposed SNAP restrictions on the average SNAP household. Individually, it is likely that some SNAP households would be affected by a sugar-sweetened beverage or snack food restriction. CONCLUSIONS: Legislation restricting specific foods will likely be less effective at altering SNAP households' food expenditures than legislation seeking to restrict all WIC-ineligible foods.


Assuntos
Comportamento de Escolha , Comportamento do Consumidor/estatística & dados numéricos , Assistência Alimentar/legislação & jurisprudência , Abastecimento de Alimentos/estatística & dados numéricos , Adulto , Criança , Feminino , Assistência Alimentar/organização & administração , Abastecimento de Alimentos/economia , Humanos , Lactente , Adoçantes Calóricos/administração & dosagem , Valor Nutritivo , Pobreza/estatística & dados numéricos , Inquéritos e Questionários
20.
Nutrients ; 10(7)2018 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-29941818

RESUMO

International scientific experts in food, nutrition, dietetics, endocrinology, physical activity, paediatrics, nursing, toxicology and public health met in Lisbon on 2⁻4 July 2017 to develop a Consensus on the use of low- and no-calorie sweeteners (LNCS) as substitutes for sugars and other caloric sweeteners. LNCS are food additives that are broadly used as sugar substitutes to sweeten foods and beverages with the addition of fewer or no calories. They are also used in medicines, health-care products, such as toothpaste, and food supplements. The goal of this Consensus was to provide a useful, evidence-based, point of reference to assist in efforts to reduce free sugars consumption in line with current international public health recommendations. Participating experts in the Lisbon Consensus analysed and evaluated the evidence in relation to the role of LNCS in food safety, their regulation and the nutritional and dietary aspects of their use in foods and beverages. The conclusions of this Consensus were: (1) LNCS are some of the most extensively evaluated dietary constituents, and their safety has been reviewed and confirmed by regulatory bodies globally including the World Health Organisation, the US Food and Drug Administration and the European Food Safety Authority; (2) Consumer education, which is based on the most robust scientific evidence and regulatory processes, on the use of products containing LNCS should be strengthened in a comprehensive and objective way; (3) The use of LNCS in weight reduction programmes that involve replacing caloric sweeteners with LNCS in the context of structured diet plans may favour sustainable weight reduction. Furthermore, their use in diabetes management programmes may contribute to a better glycaemic control in patients, albeit with modest results. LNCS also provide dental health benefits when used in place of free sugars; (4) It is proposed that foods and beverages with LNCS could be included in dietary guidelines as alternative options to products sweetened with free sugars; (5) Continued education of health professionals is required, since they are a key source of information on issues related to food and health for both the general population and patients. With this in mind, the publication of position statements and consensus documents in the academic literature are extremely desirable.


Assuntos
Bebidas/normas , Qualidade de Produtos para o Consumidor/normas , Inocuidade dos Alimentos , Alimentos/normas , Adoçantes não Calóricos/normas , Adoçantes Calóricos/normas , Valor Nutritivo , Animais , Bebidas/efeitos adversos , Glicemia/metabolismo , Consenso , Diabetes Mellitus/sangue , Diabetes Mellitus/epidemiologia , Diabetes Mellitus/terapia , Ingestão de Energia , Alimentos/efeitos adversos , Rotulagem de Alimentos/normas , Humanos , Adoçantes não Calóricos/efeitos adversos , Adoçantes Calóricos/efeitos adversos , Obesidade/epidemiologia , Obesidade/fisiopatologia , Obesidade/terapia , Recomendações Nutricionais , Medição de Risco , Redução de Peso
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...