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1.
Telemed J E Health ; 23(7): 590-599, 2017 07.
Artigo em Inglês | MEDLINE | ID: mdl-28112590

RESUMO

BACKGROUND: Insomnia is a common complaint of individuals presenting to healthcare providers and is associated with decreased quality of life and higher healthcare utilization. In-person cognitive behavioral therapy (CBT) is an effective treatment for insomnia but is hindered by cost and limited access to treatment. Initial research suggests that Web-based CBT may mitigate these obstacles. INTRODUCTION: This study tests the effectiveness of a Web-based program for insomnia based on principles of CBT and stress management. MATERIALS AND METHODS: We conducted a randomized trial with wait-list controls among adults with primary insomnia (n = 88). Two hundred sixty-three adults with comorbid insomnia were also included and analyzed separately. The intervention was a 6-week online program, and effectiveness was measured via the Insomnia Severity Index (ISI). RESULTS: Baseline ISI score for the intervention group (n = 43) was 17.0; 16.6 for the control group (n = 45). At first follow-up, the intervention group (n = 25) had a mean change from baseline of -7.3 (95% CI: -9.0, -5.6), sustained through second follow-up, while the control group (n = 35) had a change of -1.3 (-2.7, 0.1). The between-group difference was statistically significant (p < 0.001). Participants in the comorbid insomnia group had a baseline ISI score of 16.7 with improvement similar to the primary insomnia group (-6.9; -7.6, -6.2). DISCUSSION: We observed clinically meaningful improvements in insomnia severity in adults with primary or comorbid insomnia. Sustained improvement over 4 months underscores the effectiveness of a well-constructed online CBT for insomnia program. CONCLUSIONS: Go! to Sleep


Assuntos
Terapia Cognitivo-Comportamental/métodos , Internet , Distúrbios do Início e da Manutenção do Sono/terapia , Telemedicina/métodos , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento
2.
South Med J ; 108(9): 539-46, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26332479

RESUMO

OBJECTIVES: Little is known about healthcare providers' knowledge of dietary evidence or about what dietary advice providers offer to patients. The objective of our study was to determine which diets providers recommended to patients and providers' beliefs about the evidence behind those recommendations. METHODS: This was a 22-question cross-sectional survey conducted between February 2013 and September 2013, in 45 ambulatory practices within two health systems. Attending physicians, housestaff, and advanced practitioners in internal medicine, medicine-pediatrics, family medicine, cardiology, and endocrinology practices were audited. Providers' attitudes, perceptions, and beliefs about diet modification were collected. Knowledge scores were constructed based on the number of correct responses to specific questions. RESULTS: Of 343 provider responses, largely from primary care specialties (n = 3027, 90%), the top dietary recommendations were low-salt diet (71%) for hypertension, low-carbohydrate diet (64%) for uncontrolled diabetes mellitus, low saturated fat diet (73%) for dyslipidemia, low-calorie diet (72%) for obesity, and low saturated fat diet (63%) for coronary heart disease. Providers believed that 51% of diet recommendations were supported by randomized trial evidence when they were not. Respondents' overall knowledge of randomized trial evidence for dietary interventions was low (mean [standard deviation] knowledge score 44.3% [22.4%], range 0.0%-100.0%). The survey study from two health systems, using a nonvalidated survey tool limits external and internal validity. CONCLUSIONS: Providers report recommending different diets depending on specific risk factors and generally believe that their recommendations are evidence based. Substantial gaps between their knowledge and the randomized trial evidence regarding diet for disease prevention remain.


Assuntos
Aconselhamento , Dietoterapia , Pesquisas sobre Atenção à Saúde , Conhecimentos, Atitudes e Prática em Saúde , Médicos de Atenção Primária , Adulto , Doença da Artéria Coronariana/dietoterapia , Diabetes Mellitus/dietoterapia , Medicina Baseada em Evidências , Feminino , Humanos , Masculino
3.
CMAJ ; 186(8): E252-62, 2014 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-24710915

RESUMO

BACKGROUND: Evidence from controlled trials encourages the intake of dietary pulses (beans, chickpeas, lentils and peas) as a method of improving dyslipidemia, but heart health guidelines have stopped short of ascribing specific benefits to this type of intervention or have graded the beneficial evidence as low. We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs) to assess the effect of dietary pulse intake on established therapeutic lipid targets for cardiovascular risk reduction. METHODS: We searched electronic databases and bibliographies of selected trials for relevant articles published through Feb. 5, 2014. We included RCTs of at least 3 weeks' duration that compared a diet emphasizing dietary pulse intake with an isocaloric diet that did not include dietary pulses. The lipid targets investigated were low-density lipoprotein (LDL) cholesterol, apolipoprotein B and non-high-density lipoprotein (non-HDL) cholesterol. We pooled data using a random-effects model. RESULTS: We identified 26 RCTs (n = 1037) that satisfied the inclusion criteria. Diets emphasizing dietary pulse intake at a median dose of 130 g/d (about 1 serving daily) significantly lowered LDL cholesterol levels compared with the control diets (mean difference -0.17 mmol/L, 95% confidence interval -0.25 to -0.09 mmol/L). Treatment effects on apolipoprotein B and non-HDL cholesterol were not observed. INTERPRETATION: Our findings suggest that dietary pulse intake significantly reduces LDL cholesterol levels. Trials of longer duration and higher quality are needed to verify these results. TRIAL REGISTRATION: ClinicalTrials.gov, no. NCT01594567.


Assuntos
Doenças Cardiovasculares/prevenção & controle , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Dieta Redutora/métodos , Comportamento Alimentar , Dieta com Restrição de Gorduras/métodos , Dieta Hiperlipídica/métodos , Feminino , Humanos , Lipídeos/sangue , Masculino , Ensaios Clínicos Controlados Aleatórios como Assunto , Comportamento de Redução do Risco
4.
Holist Nurs Pract ; 28(1): 24-30, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24304627

RESUMO

Focus groups were held to better understand conceptions of disease prevention among low-income African American women at risk for diabetes. Mental calm was associated with health more than nutrition, exercise, or social connection. This finding suggests that prioritizing stress reduction will help with successful implementation of community holistic diabetes prevention programs.


Assuntos
Negro ou Afro-Americano/psicologia , Diabetes Mellitus/etnologia , Diabetes Mellitus/psicologia , Conhecimentos, Atitudes e Prática em Saúde/etnologia , Mulheres/psicologia , Adolescente , Adulto , Feminino , Humanos , Estilo de Vida , Pessoa de Meia-Idade , Serviços Preventivos de Saúde , Fatores Socioeconômicos , Estresse Psicológico/etnologia , Adulto Jovem
5.
Am J Epidemiol ; 178(2): 172-83, 2013 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-23785116

RESUMO

Adolescent diet may be etiologically relevant for colorectal carcinogenesis. We examined the association between meat and fish intakes during adolescence and the risk of colorectal adenomas later in life among 19,771 women participating in the Nurses' Health Study II. Subjects had completed a validated food frequency questionnaire in 1998 (when aged 34-51 years) about their diets during high school and subsequently underwent at least 1 lower-bowel endoscopy during the study period (1998-2007). During this period, 1,494 subjects were diagnosed with colorectal adenomas. Intake of red meat during adolescence was not associated with colorectal adenoma risk when comparing those in the highest versus lowest category of intake (odds ratio (OR) = 1.04, 95% confidence interval (CI): 0.81, 1.35). Similarly, intake of fish during adolescence was not associated with colorectal adenoma risk (OR = 0.96, 95% CI: 0.78, 1.17). Intake of poultry during adolescence was associated with a lower risk of total colorectal (OR = 0.80, 95% CI: 0.64, 0.99), distal (OR = 0.71, 95% CI: 0.51, 0.99), rectal (OR = 0.51, 95% CI: 0.29, 0.90), and advanced (OR = 0.60, 95% CI: 0.38, 0.93) adenomas. Replacement of 1 serving per day of red meat with 1 serving per day of poultry or fish was associated with 41% and 35% decreased risks for rectal adenomas and advanced adenomas, respectively. Our findings do not suggest an association between red meat intake during adolescence and colorectal adenomas later in life, but higher poultry intake during this time was associated with a lower risk of colorectal adenomas.


Assuntos
Adenoma/etiologia , Neoplasias Colorretais/etiologia , Dieta/efeitos adversos , Carne/efeitos adversos , Adenoma/diagnóstico , Adenoma/prevenção & controle , Adolescente , Adulto , Animais , Bovinos , Colonoscopia , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/prevenção & controle , Inquéritos sobre Dietas , Feminino , Seguimentos , Humanos , Modelos Logísticos , Pessoa de Meia-Idade , Análise Multivariada , Aves Domésticas , Estudos Prospectivos , Fatores de Risco , Alimentos Marinhos/efeitos adversos , Inquéritos e Questionários , Estados Unidos , Adulto Jovem
6.
Curr Dev Nutr ; 7(10): 101999, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37807976

RESUMO

Background: Diet quality photo navigation (DQPN) is a novel dietary intake assessment tool that was developed to help address limitations of traditional tools and to easily integrate into health care delivery systems. Prevailing practice is to validate new tools against approaches that are in wide use. Objective: This study aimed to assess 1) the validity of Diet ID in measuring diet quality, food group and nutrient intake against 2 traditional dietary assessment methods (i.e., food record [FR], food frequency questionnaire) and 2) the test reproducibility/reliability of Diet ID to obtain similar results with repeat assessments. Methods: Using a participant-sourcing platform for online research, we recruited 90 participants, 58 of whom completed DQPN, a 3-d FR (via the Automated Self-Administered 24-hour Dietary Assessment Tool), and a food frequency questionnaire (FFQ, via the Dietary History Questionnaire III). We estimated mean nutrient and food group intake with all 3 instruments and generated Pearson correlations between them. Results: Mean age (SD) of participants was 38 (11) y, and more than half were male (64%). The strongest correlations for DQPN when compared with the other 2 instruments were for diet quality, as measured by the Healthy Eating Index 2015; between DQPN and the FFQ, the correlation was 0.58 (P < 0.001), and between DQPN and the FR, the correlation was 0.56 (P < 0.001). Selected nutrients and food groups also showed moderate strength correlations. Test-retest reproducibility for measuring diet quality was evaluated for DQPN and showed a correlation of 0.70 (P < 0.0001). Conclusions: The current study offers evidence that DQPN is comparable to traditional dietary assessment tools for estimating overall diet quality. This performance, plus DQPN's ease-of-use and scalability, may recommend it in efforts to make dietary assessment a universal part of clinical care.

7.
Stroke ; 43(3): 637-44, 2012 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-22207512

RESUMO

BACKGROUND AND PURPOSE: Few dietary protein sources have been studied prospectively in relation to stroke. We examined the relation between foods that are major protein sources and risk of stroke. METHODS: We prospectively followed 84 010 women aged 30 to 55 years at baseline and 43 150 men aged 40 to 75 years at baseline without diagnosed cancer, diabetes, or cardiovascular disease. Diet was assessed repeatedly by a standardized and validated questionnaire. We examined the association between protein sources and incidence of stroke using a proportional hazard model adjusted for stroke risk factors. RESULTS: During 26 and 22 years of follow-up in women and men, respectively, we documented 2633 and 1397 strokes, respectively. In multivariable analyses, higher intake of red meat was associated with an elevated risk of stroke, whereas a higher intake of poultry was associated with a lower risk. In models estimating the effects of exchanging different protein sources, compared with 1 serving/day of red meat, 1 serving/day of poultry was associated with a 27% (95% CI, 12%-39%) lower risk of stroke, nuts with a 17% (95% CI. 4%-27%) lower risk, fish with a 17% (95% CI, 0%-30%) lower risk, low-fat dairy with an 11% (95% CI, 5%-17%) lower risk, and whole-fat dairy with a 10% (95% CI, 4%-16%) lower risk. We did not see significant associations with exchanging legumes or eggs for red meat. CONCLUSIONS: These data suggest that stroke risk may be reduced by replacing red meat with other dietary sources of protein.


Assuntos
Proteínas Alimentares/efeitos adversos , Acidente Vascular Cerebral/epidemiologia , Adulto , Animais , Isquemia Encefálica/epidemiologia , Bovinos , Hemorragia Cerebral/epidemiologia , Estudos de Coortes , Laticínios , Interpretação Estatística de Dados , Dieta , Gorduras na Dieta/efeitos adversos , Ingestão de Alimentos , Ovos , Fabaceae , Feminino , Peixes , Manipulação de Alimentos , Humanos , Masculino , Carne/efeitos adversos , Pessoa de Meia-Idade , Nozes , Estudos Prospectivos , Risco , Caracteres Sexuais , Fumar/efeitos adversos , Suínos , Estados Unidos/epidemiologia
8.
J Nutr ; 142(1): 99-104, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22113870

RESUMO

Certain algae contain the (n-3) fatty acid DHA, yet the relation between algal oil supplementation and cardiovascular disease risk factors has not been systematically examined. Our objective was to examine the relation between algal oil supplementation and cardiovascular disease risk factors. We conducted a systematic review of randomized controlled trials published between 1996 and 2011 examining the relation between algal oil supplementation and cardiovascular disease risk factors and performed a meta-analysis of the association between algal oil DHA supplementation and changes in the concentrations of TG, LDL-cholesterol (LDL-C), and HDL-cholesterol (HDL-C). We identified 11 randomized controlled trials with 485 healthy participants that evaluated the relation between algal oil DHA supplementation and TG, LDL-C, and HDL-C. The median dose of algal DHA was 1.68 g/d. The pooled estimate for the change in TG concentration was -0.20 mmol/L (95% CI: -0.27 to -0.14), 0.23 mmol/L (95% CI: 0.16-0.30) for LDL-C, and 0.07 mmol/L (95% CI: 0.05-0.10) for HDL-C. DHA supplementation from algal oil, a marine source of (n-3) fatty acids not extracted from fish, may reduce serum TG and increase HDL-C and LDL-C in persons without coronary heart disease.


Assuntos
HDL-Colesterol/sangue , LDL-Colesterol/sangue , Ácidos Docosa-Hexaenoicos/farmacologia , Óleos de Plantas/química , Triglicerídeos/sangue , Doença das Coronárias/sangue , Ácidos Docosa-Hexaenoicos/isolamento & purificação , Humanos
9.
Circulation ; 122(9): 876-83, 2010 Aug 31.
Artigo em Inglês | MEDLINE | ID: mdl-20713902

RESUMO

BACKGROUND: With the exception of fish, few major dietary protein sources have been studied in relation to the development of coronary heart disease (CHD). Our objective was to examine the relation between foods that are major dietary protein sources and incident CHD. METHODS AND RESULTS: We prospectively followed 84,136 women aged 30 to 55 years in the Nurses' Health Study with no known cancer, diabetes mellitus, angina, myocardial infarction, stroke, or other cardiovascular disease. Diet was assessed by a standardized and validated questionnaire and updated every 4 years. During 26 years of follow-up, we documented 2210 incident nonfatal infarctions and 952 deaths from CHD. In multivariable analyses including age, smoking, and other risk factors, higher intakes of red meat, red meat excluding processed meat, and high-fat dairy were significantly associated with elevated risk of CHD. Higher intakes of poultry, fish, and nuts were significantly associated with lower risk. In a model controlling statistically for energy intake, 1 serving per day of nuts was associated with a 30% (95% confidence interval, 17% to 42%) lower risk of CHD compared with 1 serving per day of red meat. Similarly, compared with 1 serving per day of red meat, a lower risk was associated with 1 serving per day of low-fat dairy (13%; 95% confidence interval, 6% to 19%), poultry (19%; 95% confidence interval, 3% to 33%), and fish (24%; 95% confidence interval, 6% to 39%). CONCLUSIONS: These data suggest that high red meat intake increases risk of CHD and that CHD risk may be reduced importantly by shifting sources of protein in the US diet.


Assuntos
Doença das Coronárias/mortalidade , Proteínas Alimentares/administração & dosagem , Fast Foods , Carne , Infarto do Miocárdio/mortalidade , Adulto , Distribuição por Idade , Estudos de Coortes , Doença das Coronárias/dietoterapia , Doença das Coronárias/prevenção & controle , Laticínios , Atestado de Óbito , Comportamento Alimentar , Feminino , Produtos Pesqueiros , Seguimentos , Humanos , Incidência , Pessoa de Meia-Idade , Análise Multivariada , Infarto do Miocárdio/dietoterapia , Infarto do Miocárdio/prevenção & controle , Produtos Avícolas , Estudos Prospectivos , Fatores de Risco , Inquéritos e Questionários
10.
Eur J Epidemiol ; 26(11): 877-86, 2011 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-22041998

RESUMO

The appropriate manner of incorporating incident angina, coronary artery bypass surgery (CABG), percutaneous coronary intervention (PCI), diabetes, hypertension, and hypercholesterolemia, which may be both intermediate events and time-dependent confounders, into analyses of diet and coronary heart disease (CHD) is not clear. Using data from 72,266 women in the Nurses' Health Study between 1984 and 2006, the authors examined the relation between report of intermediate events and change in cereal fiber intake and used different proportional hazards models to evaluate the association between cereal fiber and CHD. Cereal fiber intake increased significantly among participants who reported hypercholesterolemia (0.42 g/day; 95% CI: 0.34, 0.51 g/day) and diabetes (0.07 g/day with each additional 2-year increment; 95% CI: 0.01, 0.13 g/day). However, angina, CABG/PCI, and hypertension were not associated with a change in cereal fiber intake and thus were not important time-dependent confounders. Cereal fiber intake was inversely associated with risk of CHD in all proportional hazards models, but results varied modestly depending on the approach used to incorporate multiple measures of diet. Because stopping the updating of dietary variables when an intermediate event is diagnosed may lead to misclassification, future analyses should consider updating diet even after these diagnoses to best represent long-term intake. To best evaluate associations with incidence of disease, considerations should include the temporal trends in diet, changes in intake following intermediate events, and latency patterns. Sensitivity analyses can also be useful.


Assuntos
Doença das Coronárias/prevenção & controle , Fibras na Dieta/administração & dosagem , Grão Comestível , Adulto , Fatores de Confusão Epidemiológicos , Doença das Coronárias/dietoterapia , Doença das Coronárias/epidemiologia , Ingestão de Energia , Feminino , Seguimentos , Humanos , Incidência , Estimativa de Kaplan-Meier , Estudos Prospectivos , Risco , Fatores de Risco , Inquéritos e Questionários , Fatores de Tempo , Estados Unidos/epidemiologia
11.
J Am Diet Assoc ; 107(4): 644-50, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17383270

RESUMO

In individuals with chronic kidney disease, high-protein diets have been shown to accelerate renal deterioration, whereas low-protein diets increase the risk of protein malnutrition. Vegetarian diets have been promoted as a way to halt progression of kidney disease while maintaining adequate nutrition. We review the literature to date comparing the effects of animal and vegetable protein on kidney function in health and disease. Diets with conventional amounts of protein, as well as high-protein diets, are reviewed. The literature shows that in short-term clinical trials, animal protein causes dynamic effects on renal function, whereas egg white, dairy, and soy do not. These differences are seen both in diets with conventional amounts of protein and those with high amounts of protein. The long-term effects of animal protein on normal kidney function are not known. Although data on persons with chronic kidney disease are limited, it appears that high intake of animal and vegetable proteins accelerates the underlying disease process not only in physiologic studies but also in short-term interventional trials. The long-term effects of high protein intake on chronic kidney disease are still poorly understood. Several mechanisms have been suggested to explain the different effects of animal and vegetable proteins on normal kidney function, including differences in postprandial circulating hormones, sites of protein metabolism, and interaction with accompanying micronutrients.


Assuntos
Dieta com Restrição de Proteínas , Dieta Vegetariana , Proteínas Alimentares/administração & dosagem , Falência Renal Crônica/dietoterapia , Rim/efeitos dos fármacos , Animais , Ensaios Clínicos como Assunto , Progressão da Doença , Humanos , Rim/fisiologia , Carne , Resultado do Tratamento , Verduras
13.
J Occup Environ Med ; 58(3): 254-64, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26949875

RESUMO

OBJECTIVE: The objective of this study is to determine the effectiveness of an 8-week web-based, mindfulness stress management program (WSM) in a corporate call center and added benefit of group support. METHODS: One hundred sixty-one participants were randomized to WSM, WSM with group support, WSM with group and expert clinical support, or wait-list control. Perceived stress, burnout, emotional and psychological well-being, mindfulness, and productivity were measured at baseline, weeks 8 and 16, and 1 year. RESULTS: Online usage was low with participants favoring CD use and group practice. All active groups demonstrated significant reductions in perceived stress and increases in emotional and psychological well-being compared with control. Group support improved participation, engagement, and outcomes. CONCLUSION: A self-directed mindfulness program with group practice and support can provide an affordable, effective, and scalable workplace stress management solution. Engagement may also benefit from combining web-based and traditional CD delivery.


Assuntos
Call Centers , Atenção Plena , Saúde Ocupacional , Estresse Psicológico/prevenção & controle , Adulto , Aconselhamento , Eficiência , Emoções , Feminino , Processos Grupais , Humanos , Internet , Masculino , Saúde Mental , Pessoa de Meia-Idade , Apoio Social , Local de Trabalho/psicologia
14.
Environ Health Perspect ; 124(10): 1529-1536, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27105317

RESUMO

BACKGROUND: Heterocyclic amines (HCAs) in cooked meats may play a role in colorectal cancer (CRC) development. OBJECTIVES: We aimed to prospectively examine the association between estimated intakes of HCAs and meat-derived mutagenicity (MDM) in two cohorts of health professionals, the Health Professionals Follow-up Study (HPFS) and the Nurses' Health Study (NHS). METHODS: In 29,615 men and 65,875 women, intake of the HCAs 2-amino-3,8-dimethylimidazo(4,5-j)quinoxaline (MeIQx), 2-amino-1-methyl-6-phenylimidazo(4,5-b)pyridine (PhIP), 2-amino-3,4,8-trimethylimidazo(4,5-f)quinoxaline (DiMeIQx), and MDM was estimated using a 1996 cooking questionnaire, the 1994 food frequency questionnaire, and an online database. Cox proportional hazards models were used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) and to adjust for potential confounders. Estimates for both cohorts were pooled using random-effects meta-analysis. RESULTS: Between 1996 and 2010, 418 male and 790 female CRC cases were identified. Meat mutagen intake was not statistically significantly associated with risk of CRC [highest vs. lowest quintile, pooled HR (95% CI) for MeIQx: 1.12 (0.93, 1.34), p for trend 0.23; PhIP: 1.10 (0.90, 1.33), p for trend 0.35; MDM: 1.03 (0.86, 1.24), p for trend 0.75] or subtypes of CRC defined by tumor location (proximal or distal colon, or rectum). When analyzed by source of meat, PhIP from red but not from white meat was nonsignificantly positively associated with CRC and significantly positively associated with proximal cancers [HR (95% CI) per standard deviation increase of log-transformed intake: PhIP red meat: CRC: 1.06 (0.99, 1.12), proximal: 1.11 (1.02, 1.21); PhIP white meat: CRC: 0.99 (0.94, 1.04), proximal: 1.00 (0.93, 1.09)]. CONCLUSIONS: Estimated intakes of meat mutagens were not significantly associated with CRC risk over 14 years of follow-up in the NHS and HPFS cohorts. Results for PhIP from red but not from white meat warrant further investigation. CITATION: Le NT, Michels FA, Song M, Zhang X, Bernstein AM, Giovannucci EL, Fuchs CS, Ogino S, Chan AT, Sinha R, Willett WC, Wu K. 2016. A prospective analysis of meat mutagens and colorectal cancer in the Nurses' Health Study and Health Professionals Follow-up Study. Environ Health Perspect 124:1529-1536; http://dx.doi.org/10.1289/EHP238.

15.
Am J Clin Nutr ; 103(5): 1213-23, 2016 May.
Artigo em Inglês | MEDLINE | ID: mdl-27030531

RESUMO

BACKGROUND: Obesity is a risk factor for developing several diseases, and although dietary pulses (nonoil seeds of legumes such as beans, lentils, chickpeas, and dry peas) are well positioned to aid in weight control, the effects of dietary pulses on weight loss are unclear. OBJECTIVE: We summarized and quantified the effects of dietary pulse consumption on body weight, waist circumference, and body fat by conducting a systematic review and meta-analysis of randomized controlled trials. DESIGN: We searched the databases MEDLINE, Embase, CINAHL, and the Cochrane Library through 11 May 2015 for randomized controlled trials of ≥3 wk of duration that compared the effects of diets containing whole dietary pulses with those of comparator diets without a dietary pulse intervention. Study quality was assessed by means of the Heyland Methodologic Quality Score, and risk of bias was assessed with the Cochrane Risk of Bias tool. Data were pooled with the use of generic inverse-variance random-effects models. RESULTS: Findings from 21 trials (n = 940 participants) were included in the meta-analysis. The pooled analysis showed an overall significant weight reduction of -0.34 kg (95% CI: -0.63, -0.04 kg; P = 0.03) in diets containing dietary pulses (median intake of 132 g/d or ∼1 serving/d) compared with diets without a dietary pulse intervention over a median duration of 6 wk. Significant weight loss was observed in matched negative-energy-balance (weight loss) diets (P = 0.02) and in neutral-energy-balance (weight-maintaining) diets (P = 0.03), and there was low evidence of between-study heterogeneity. Findings from 6 included trials also suggested that dietary pulse consumption may reduce body fat percentage. CONCLUSIONS: The inclusion of dietary pulses in a diet may be a beneficial weight-loss strategy because it leads to a modest weight-loss effect even when diets are not intended to be calorically restricted. Future studies are needed to determine the effects of dietary pulses on long-term weight-loss sustainability. This protocol was registered at clinicaltrials.gov as NCT01594567.


Assuntos
Peso Corporal , Dieta , Fabaceae , Redução de Peso , Adiposidade , Fibras na Dieta/administração & dosagem , Proteínas Alimentares/administração & dosagem , Humanos , Obesidade/dietoterapia , Ensaios Clínicos Controlados Aleatórios como Assunto , Saciação , Circunferência da Cintura
16.
J Am Coll Cardiol ; 66(14): 1538-1548, 2015 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-26429077

RESUMO

BACKGROUND: The associations between dietary saturated fats and the risk of coronary heart disease (CHD) remain controversial, but few studies have compared saturated with unsaturated fats and sources of carbohydrates in relation to CHD risk. OBJECTIVES: This study sought to investigate associations of saturated fats compared with unsaturated fats and different sources of carbohydrates in relation to CHD risk. METHODS: We followed 84,628 women (Nurses' Health Study, 1980 to 2010), and 42,908 men (Health Professionals Follow-up Study, 1986 to 2010) who were free of diabetes, cardiovascular disease, and cancer at baseline. Diet was assessed by a semiquantitative food frequency questionnaire every 4 years. RESULTS: During 24 to 30 years of follow-up, we documented 7,667 incident cases of CHD. Higher intakes of polyunsaturated fatty acids (PUFAs) and carbohydrates from whole grains were significantly associated with a lower risk of CHD comparing the highest with lowest quintile for PUFAs (hazard ratio [HR]: 0.80, 95% confidence interval [CI]: 0.73 to 0.88; p trend <0.0001) and for carbohydrates from whole grains (HR: 0.90, 95% CI: 0.83 to 0.98; p trend = 0.003). In contrast, carbohydrates from refined starches/added sugars were positively associated with a risk of CHD (HR: 1.10, 95% CI: 1.00 to 1.21; p trend = 0.04). Replacing 5% of energy intake from saturated fats with equivalent energy intake from PUFAs, monounsaturated fatty acids, or carbohydrates from whole grains was associated with a 25%, 15%, and 9% lower risk of CHD, respectively (PUFAs, HR: 0.75, 95% CI: 0.67 to 0.84; p < 0.0001; monounsaturated fatty acids, HR: 0.85, 95% CI: 0.74 to 0.97; p = 0.02; carbohydrates from whole grains, HR: 0.91, 95% CI: 0.85 to 0.98; p = 0.01). Replacing saturated fats with carbohydrates from refined starches/added sugars was not significantly associated with CHD risk (p > 0.10). CONCLUSIONS: Our findings indicate that unsaturated fats, especially PUFAs, and/or high-quality carbohydrates can be used to replace saturated fats to reduce CHD risk.


Assuntos
Doença da Artéria Coronariana/epidemiologia , Carboidratos da Dieta , Gorduras Insaturadas na Dieta , Ingestão de Energia , Adulto , Idoso , Doença da Artéria Coronariana/diagnóstico , Inquéritos sobre Dietas , Comportamento Alimentar , Feminino , Seguimentos , Preferências Alimentares , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fatores de Risco , Autorrelato , Estados Unidos
17.
PLoS One ; 10(8): e0135959, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26305323

RESUMO

Although the association between red meat consumption and colorectal cancer (CRC) is well established, the association across subsites of the colon and rectum remains uncertain, as does time of consumption in relation to cancer development. As these relationships are key for understanding the pathogenesis of CRC, they were examined in two large cohorts with repeated dietary measures over time, the Nurses' Health Study (n = 87,108 women, 1980-2010) and Health Professionals Follow-up Study (n = 47,389 men, 1986-2010). Cox proportional hazards regression models generated hazard ratios (HRs) and 95% confidence intervals (CIs), which were pooled by random-effects meta-analysis. In combined cohorts, there were 2,731 CRC cases (1,151 proximal colon, 816 distal colon, and 589 rectum). In pooled analyses, processed red meat was positively associated with CRC risk (per 1 serving/day increase: HR = 1.15, 95% CI: 1.01-1.32; P for trend 0.03) and particularly with distal colon cancer (per 1 serving/day increase; HR = 1.36; 95% CI: 1.09-1.69; P for trend 0.006). Recent consumption of processed meat (within the past 4 years) was not associated with distal cancer. Unprocessed red meat was inversely associated with risk of distal colon cancer and a weak non-significant positive association between unprocessed red meat and proximal cancer was observed (per 1 serving/day increase: distal HR = 0.75; 95% CI: 0.68-0.82; P for trend <0.001; proximal HR = 1.14, 95% CI: 0.92-1.40; P for trend 0.22). Thus, in these two large cohorts of US health professionals, processed meat intake was positively associated with risk of CRC, particularly distal cancer, with little evidence that higher intake of unprocessed red meat substantially increased risk of CRC. Future studies, particularly those with sufficient sample size to assess associations by subsites across the colon are needed to confirm these findings and elucidate potentially distinct mechanisms underlying the relationship between processed meat and subtypes of unprocessed red meat with CRC.


Assuntos
Neoplasias Colorretais/epidemiologia , Dieta/efeitos adversos , Atividade Motora , Carne Vermelha/efeitos adversos , Idoso , Neoplasias Colorretais/etiologia , Neoplasias Colorretais/patologia , Feminino , Manipulação de Alimentos , Humanos , Masculino , Pessoa de Meia-Idade , Enfermeiras e Enfermeiros , Modelos de Riscos Proporcionais , Fatores de Risco
18.
J Am Coll Cardiol ; 66(14): 1590-1614, 2015 Oct 06.
Artigo em Inglês | MEDLINE | ID: mdl-26429085

RESUMO

Major scholars in the field, on the basis of a 3-day consensus, created an in-depth review of current knowledge on the role of diet in cardiovascular disease (CVD), the changing global food system and global dietary patterns, and potential policy solutions. Evidence from different countries and age/race/ethnicity/socioeconomic groups suggesting the health effects studies of foods, macronutrients, and dietary patterns on CVD appear to be far more consistent though regional knowledge gaps is highlighted. Large gaps in knowledge about the association of macronutrients to CVD in low- and middle-income countries particularly linked with dietary patterns are reviewed. Our understanding of foods and macronutrients in relationship to CVD is broadly clear; however, major gaps exist both in dietary pattern research and ways to change diets and food systems. On the basis of the current evidence, the traditional Mediterranean-type diet, including plant foods and emphasis on plant protein sources provides a well-tested healthy dietary pattern to reduce CVD.


Assuntos
Doenças Cardiovasculares/epidemiologia , Doenças Cardiovasculares/prevenção & controle , Dieta , Comportamento Alimentar , Abastecimento de Alimentos , Saúde Global , Mudança Climática , Humanos , Fatores de Risco
19.
J Gerontol A Biol Sci Med Sci ; 59(11): 1195-9, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15602075

RESUMO

Consistent with the compression-of-morbidity hypothesis, several studies have reported that a significant proportion of centenarians delay or escape age-related diseases. Of those who live with such diseases for a long time, many appear to do so with better functional status than do younger persons who do not achieve extreme old age. The authors describe the first autopsy in an Okinawan-Japanese centenarian who escaped many age-related illnesses and delayed frailty toward the end of her very long life. Her late-life morbidity pattern is contrasted with that of white centenarians.


Assuntos
Envelhecimento/patologia , Longevidade , Idoso , Idoso de 80 Anos ou mais , Autopsia , Broncopneumonia/patologia , Feminino , Humanos , Japão
20.
J Clin Lipidol ; 8(6): 612-617, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-25499944

RESUMO

BACKGROUND: Purified palmitoleic acid (16-1; omega-7) has shown lipid-lowering and anti-inflammatory benefits in open label, epidemiologic, and animal studies. OBJECTIVE: Our objective was to perform the first randomized controlled trial of purified palmitoleic acid supplementation in humans. METHODS: Adults with dyslipidemia and evidence of mild systemic inflammation (high-sensitivity C-reactive protein [hs-CRP] between 2 and 5 mg/L) were randomly allocated to receive either 220.5 mg of cis-palmitoleic acid (n = 30) or an identical capsule with placebo (1000 mg of medium chain triglycerides, n = 30) once per day for 30 days. Participants were asked to maintain their current diet. Serum lipids and hs-CRP were drawn at baseline and study completion. RESULTS: At 30 days, there were significant mean (95% confidence interval [CI]) reductions in CRP (-1.9 [-2.3 to -1.4] mg/L), triglyceride (-30.2 [-40.2 to -25.3] mg/dL), and low-density lipoprotein (LDL) (-8.9 [-12.0 to -5.8] mg/dL), and a significant increase in high-density lipoprotein (HDL) (2.4 [1.5, 3.3] mg/dL) in the intervention group compared with control. These changes equated to 44%, 15%, and 8% reductions in CRP, triglyceride, and LDL respectively, and a 5% increase in HDL compared with control. CONCLUSIONS: Purified palmitoleic acid may be useful in the treatment of hypertriglyceridemia with the beneficial added effects of decreasing LDL and hs-CRP and raising HDL. Further study is needed to elucidate mechanisms and establish appropriate human doses.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Dislipidemias/dietoterapia , Ácidos Graxos Monoinsaturados/uso terapêutico , Hipolipemiantes/uso terapêutico , Inflamação/dietoterapia , Adulto , Anti-Inflamatórios não Esteroides/efeitos adversos , Proteína C-Reativa/metabolismo , LDL-Colesterol/sangue , Suplementos Nutricionais , Método Duplo-Cego , Ácidos Graxos Monoinsaturados/efeitos adversos , Feminino , Humanos , Hipolipemiantes/efeitos adversos , Metabolismo dos Lipídeos/efeitos dos fármacos , Masculino , Pessoa de Meia-Idade , Placebos/administração & dosagem , Placebos/efeitos adversos , Porto Rico , Triglicerídeos/sangue
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