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Are Liquid Sugars Different from Solid Sugar in Their Ability to Cause Metabolic Syndrome?
Sundborn, G, Thornley, S, Merriman, TR, Lang, B, King, C, Lanaspa, MA, Johnson, RJ
Obesity (Silver Spring, Md.). 2019;(6):879-887
Abstract
OBJECTIVE Intake of sugary drinks, especially soft drinks, carries increased risk for obesity and diabetes. This article reviews whether sugary drinks carry different risks for metabolic syndrome compared with foods that contain natural or added sugars. METHODS A narrative review was performed to evaluate differences between liquid and solid sugars in their ability to induce metabolic syndrome and to discuss potential mechanisms to account for the differences. RESULTS Epidemiological studies support liquid added sugars, such as soft drinks, as carrying greater risk for development of metabolic syndrome compared with solid sugar. Some studies suggest that fruit juice may also confer relatively higher risk for weight gain and insulin resistance compared with natural fruits. Experimental evidence suggests this may be due to differences in how fructose is metabolized. Fructose induces metabolic disease by reducing the energy levels in liver cells, mediated by the concentration of fructose to which the cells are exposed. The concentration relates to the quantity and speed at which fructose is ingested, absorbed, and metabolized. CONCLUSIONS Although reduced intake of added sugars (sucrose and high-fructose corn syrup) remains a general recommendation, there is evidence that sugary soft drinks may provide greater health risks relative to sugar-containing foods.
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Effects of free sugars on blood pressure and lipids: a systematic review and meta-analysis of nutritional isoenergetic intervention trials.
Fattore, E, Botta, F, Agostoni, C, Bosetti, C
The American journal of clinical nutrition. 2017;(1):42-56
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BACKGROUND Sugar has been suggested as a central risk factor in the development of noncommunicable diseases. OBJECTIVE We assessed the evidence of the effects of free sugars compared with complex carbohydrates on selected cardiovascular disease risk factors. DESIGN We conducted a systematic review and meta-analysis of intervention trials to compare diets that provide a given amount of energy from free sugars with a control diet that provides the same amount of energy from complex carbohydrates. The primary outcomes were: blood pressure, total cholesterol, low-density lipoprotein (LDL) cholesterol, high-density lipoprotein (HDL) cholesterol, triacylglycerols, apolipoproteins A-I and B, or very low-density lipoprotein cholesterol. Body weight was also recorded but was not a primary outcome of the studies. RESULTS In all, 28 studies involving 510 volunteers were included. When free sugars were substituted for complex carbohydrates, no significant increases were detected in systolic or diastolic blood pressure, and no heterogeneity was observed. There were significant increases in HDL cholesterol, LDL cholesterol, and triacylglycerols, although for LDL cholesterol and triacylglycerols there was significant heterogeneity between studies and evidence of publication bias. After adjustment for missing studies, these increases lost significance. Subgroup analyses showed that diets providing the largest total energy intake and energy exchange enhanced the effect of free sugars on total and LDL cholesterol and triacylglycerols. The increase of triacylglycerols was no longer significant when studies with the highest risk of bias were excluded or when only randomized trials were considered. Free sugars had no effect on body weight. CONCLUSIONS In short- or moderate-term isoenergetic intervention trials, the substitution of free sugars for complex carbohydrates had no effect on blood pressure or body weight and an unclear effect on blood lipid profile. Further independent trials are required to assess whether the reduction of free sugars improves cardiovascular disease risk factors. This review was registered at http://www.crd.york.ac.uk/prospero as CRD42016042930.
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Is Salt a Culprit or an Innocent Bystander in Hypertension? A Hypothesis Challenging the Ancient Paradigm.
DiNicolantonio, JJ, Mehta, V, O'Keefe, JH
The American journal of medicine. 2017;(8):893-899
Abstract
For decades the notion that an excessive consumption of salt (NaCl) leads to hypertension has persisted. However, this idea is based on opinion, not scientific proof. Despite this, every health organization, agency, and clinicians around the world have been advising salt restriction, especially to hypertensive patients. The present review article suggests that the consumption of a high-salt diet is not the cause of hypertension and that there are other factors, such as added sugars, which are causative for inducing hypertension and cardiovascular disease.
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Soft drink intake and the risk of metabolic syndrome: A systematic review and meta-analysis.
Narain, A, Kwok, CS, Mamas, MA
International journal of clinical practice. 2017;(2)
Abstract
BACKGROUND It is unclear whether consumption of sugar- or artificially sweetened beverages is independently associated with the development of metabolic syndrome. A systematic review and meta-analysis was performed to evaluate whether soft drink consumption is associated with the development of metabolic syndrome. METHODS Medline and EMBASE were searched in November 2015 for studies which considered soft drink (sugar-sweetened beverage [SSB] and artificially sweetened beverage [ASB]) intake and risk of metabolic syndrome. Pooled risk ratios for adverse outcomes were calculated using inverse variance with a random effects model, and heterogeneity was assessed using the I2 statistic. RESULTS A total of 12 studies (eight cross-sectional, four prospective cohort studies) with 56 244 participants (age range 6-98 years) were included in the review. Our pooled analysis found that soft drink intake is associated with metabolic syndrome. This relationship is shown in cross-sectional studies of SSB consumption (RR 1.46, 95% CI 1.18-1.91) and both cross-sectional and prospective studies of ASB consumption (RR 2.45; 95% CI 1.15-5.14; RR 1.32, 95% CI 1.21-1.44, respectively). However, pooled results of prospective cohort studies of SSB consumption found no association between intake and risk of developing metabolic syndrome. CONCLUSIONS Sugar-sweetened beverage and ASB intake are both associated with metabolic syndrome. This association may be driven by the fact that soft drink intake serves as a surrogate for an unhealthy lifestyle, or an adverse cardiovascular risk factor profile.
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The role of artificial and natural sweeteners in reducing the consumption of table sugar: A narrative review.
Mooradian, AD, Smith, M, Tokuda, M
Clinical nutrition ESPEN. 2017;:1-8
Abstract
The rapid increase in the prevalence of obesity worldwide has been partially attributed to the overconsumption of added sugars. Recent guidelines call for limiting the consumption of simple sugars to less than 10% of daily caloric consumption. High intensity sweeteners are regulated as food additives and include aspartame, acesulfame-k, neotame, saccharin, sucralose, cyclamate and alitame. Steviol glycosides and Luo Han Guo fruit extracts are high intensity sweeteners that are designated as generally recognized as safe (GRAS). Commonly used non-caloric artificial sweeteners may have unfavorable effect on health including glucose intolerance and failure to cause weight reduction. The nutritive sweeteners include sugar alcohols such as sorbitol, xylitol, lactitol, mannitol, erythritol, trehalose and maltitol. Naturally occurring rare sugars have recently emerged as an alternative category of sweeteners. These monosaccharides and their derivatives are found in nature in small quantities and lack significant calories. This category includes d-allulose (d-psicose), d-tagatose, d-sorbose and d-allose. Limiting consumption of any sweetener may well be the best health advice. Identifying natural sweeteners that have favorable effects on body weight and metabolism may help achieving the current recommendations of restricting simple sugar consumption.
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Prospective association of sugar-sweetened and artificially sweetened beverage intake with risk of hypertension.
Kim, Y, Je, Y
Archives of cardiovascular diseases. 2016;(4):242-53
Abstract
BACKGROUND Several observational studies have suggested that high consumption of sugar-sweetened beverages (SSBs) and artificially sweetened beverages (ASBs) is associated with increased blood pressure, but this relationship has not been investigated comprehensively. AIMS To quantitatively examine the association between sugar-sweetened and artificially sweetened beverage intake and risk of hypertension. METHODS We performed a systematic review and meta-analysis of eligible prospective cohort studies, identified by searching PubMed, Embase and Web of Science databases up to May 2015. Pooled relative risks (RRs) with 95% confidence intervals (CIs) were calculated using a random-effects model, and generalized least-squares trend estimation was used to assess dose-response relationships. RESULTS Six studies (246,822 subjects and 80,628 incident cases of hypertension) were identified for the meta-analysis of SSBs and hypertension. The pooled RR of hypertension in the highest category of SSB consumption (≥1 serving/day, mean) compared with the lowest category of SSB (<0.6 serving/month, mean) was 1.12 (95% CI: 1.07, 1.17). In a dose-response analysis, a 1 serving/day increase in SSB intake was associated with an 8% increased risk of hypertension (RR: 1.08, 95% CI: 1.06, 1.11). Four studies (227,254 subjects and 78,177 incident cases of hypertension) were included in the meta-analysis of ASBs and hypertension. The pooled RRs were 1.14 (95% CI: 1.10, 1.18) for highest versus lowest analysis and 1.09 (95% CI: 1.06, 1.11) for every additional 1 serving/day increase in ASB consumption. The positive association did not vary significantly by sex, duration of follow-up or adjustment for body mass index. CONCLUSIONS Our findings indicate that high SSB and ASB consumption is associated with an increased risk of hypertension.
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Do Sugar-Sweetened Beverages Cause Obesity and Diabetes? Industry and the Manufacture of Scientific Controversy.
Schillinger, D, Tran, J, Mangurian, C, Kearns, C
Annals of internal medicine. 2016;(12):895-897
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This article has been corrected. The original version (PDF) is appended to this article as a Supplement.
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The impact of a tax on sugar-sweetened beverages according to socio-economic position: a systematic review of the evidence.
Backholer, K, Sarink, D, Beauchamp, A, Keating, C, Loh, V, Ball, K, Martin, J, Peeters, A
Public health nutrition. 2016;(17):3070-3084
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OBJECTIVE A tax on sugar-sweetened beverages (SSB) has been proposed to address population weight gain but the effect across socio-economic position (SEP) is unclear. The current study aimed to clarify the differential impact(s) of SSB taxes on beverage purchases and consumption, weight outcomes and the amount paid in SSB taxes according to SEP. DESIGN Databases (OVID and EMBASE) and grey literature were systematically searched in June 2015 to identify studies that examined effects of an SSB price increase on beverage purchases or consumption, weight outcomes or the amount paid in tax across SEP, within high-income countries. RESULTS Of the eleven included articles, three study types were identified: (i) those that examined the association between variation in SSB taxes and SSB consumption and/or body weight (n 3); (ii) price elasticity estimation of SSB demand (n 1); and (iii) modelling of hypothetical SSB taxes by combining price elasticity estimates with population SEP-specific beverage consumption, energy intake or body weight (n 7). Few studies statistically tested differences in outcomes between SEP groups. Nevertheless, of the seven studies that reported on changes in weight outcomes for the total population following an increase in SSB price, all reported either similar reductions in weight across SEP groups or greater reductions for lower compared with higher SEP groups. All studies that examined the average household amount paid in tax (n 5) reported that an SSB tax would be regressive, but with small differences between higher- and lower-income households (0·10-1·0 % and 0·03 %-0·60 % of annual household income paid in SSB tax for low- and high-income households, respectively). CONCLUSIONS Based on the available evidence, a tax on SSB will deliver similar population weight benefits across socio-economic strata or greater benefits for lower SEP groups. An SSB tax is shown to be consistently financially regressive, but to a small degree.
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Sweeteners and health: findings from recent research and their impact on obesity and related metabolic conditions.
Rippe, JM, Tappy, L
International journal of obesity (2005). 2016;:S1-5
Abstract
Few topics in nutrition engender more controversy than added sugars in general, and fructose-containing sugars in particular. Some investigators have argued that added sugars are associated with increased risk of obesity, cardiovascular disease, diabetes, non-alcoholic fatty liver disease and even sugar 'addiction'. Other investigators have questioned the scientific basis for all of these assertions. This debate has extended far beyond the scientific community into various media outlets including the internet and other non-refereed venues often with heated rhetoric and little science. Against this backdrop, a group of experts and researchers in the metabolism and health effects of added sugars presented a symposium 'Sweeteners and Health: Findings from Recent Research and their Impact on Obesity and Related Metabolic Conditions' at the European Congress on Obesity on 7 May 2015. The papers in this supplement are based on the presentations made at this meeting. The current article is intended to serve as an Introduction to this supplement.
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Sweetening of the global diet, particularly beverages: patterns, trends, and policy responses.
Popkin, BM, Hawkes, C
The lancet. Diabetes & endocrinology. 2016;(2):174-86
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Evidence suggests that excessive intake of added sugars has adverse effects on cardiometabolic health, which is consistent with many reviews and consensus reports from WHO and other unbiased sources. 74% of products in the US food supply contain caloric or low-calorie sweeteners, or both. Of all packaged foods and beverages purchased by a nationally representative sample of US households in 2013, 68% (by proportion of calories) contain caloric sweeteners and 2% contain low-calorie sweeteners. We believe that in the absence of intervention, the rest of the world will move towards this pervasiveness of added sugars in the food supply. Our analysis of trends in sales of sugar-sweetened beverages around the world, in terms of calories sold per person per day and volume sold per person per day, shows that the four regions with the highest consumption are North America, Latin America, Australasia, and western Europe. The fastest absolute growth in sales of sugar-sweetened beverages by country in 2009-14 was seen in Chile. We believe that action is needed to tackle the high levels and continuing growth in sales of such beverages worldwide. Many governments have initiated actions to reduce consumption of sugar-sweetened beverages in the past few years, including taxation (eg, in Mexico); reduction of their availability in schools; restrictions on marketing of sugary foods to children; public awareness campaigns; and positive and negative front-of-pack labelling. In our opinion, evidence of the effectiveness of these actions shows that they are moving in the right direction, but governments should view them as a learning process and improve their design over time. A key challenge for policy makers and researchers is the absence of a consensus on the relation of beverages containing low-calorie sweeteners and fruit juices with cardiometabolic outcomes, since decisions about whether these are healthy substitutes for sugar-sweetened beverages are an integral part of policy design.