Effect of viscous fiber supplementation on obesity indicators in individuals consuming calorie-restricted diets: a systematic review and meta-analysis of randomized controlled trials

Jovanovski, Elena; Mazhar, Nourah; Komishon, Allison; Khayyat, Rana; Li, Dandan; Mejía, Sonia Blanco; Khan, Tauseef; Jenkins, Alexandra L.; Duvnjak, Lea; Sievenpiper, John L.; Vuksan, Vladimir

doi:10.1007/s00394-020-02224-1

Cited by 26 publications

(17 citation statements)

References 48 publications

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“…Although some positive results have been observed for RS supplementation in relation to increasing satiety indicators and reducing energy consumption, further human intervention trials are warranted to investigate the specific dosages and RS types required to significantly affect one's satiety parameters to establish a potential role for RS supplementation in weight management. RS ingredients may have a lower effect on satiety in comparison to soluble, viscous fibers (such as β‐glucan, guar gum, and psyllium) which may enhance appetite regulation by promoting gastric distention and increasing satiation (Jovanovski et al., 2021).…”

Section: Potential Health Benefits Of Rsmentioning

confidence: 99%

Resistant starch—An accessible fiber ingredient acceptable to the Western palate

Walsh

Lucey

Walter

et al. 2022

Comp Rev Food Sci Food Safe

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Dietary fiber intakes in Western societies are concerningly low and do not reflect global recommended dietary fiber intakes for chronic disease prevention. Resistant starch (RS) is a fermentable dietary fiber that has attracted research interest. As an isolated ingredient, its fine particle size, relatively bland flavor, and white appearance may offer an appealing fiber source to the Western palate, accustomed to highly refined, processed grains. This review aims to provide a comprehensive insight into the current knowledge (classification, production methods, and characterization methods), health benefits, applications, and acceptability of RS. It further discusses the present market for commercially available RS ingredients and products containing ingredients high in RS.The literature currently highlights beneficial effects for dietary RS supplementation with respect to glucose metabolism, satiety, blood lipid profiles, and colonic health. An exploration of the market for commercial RS ingredients indicates a diverse range of products (from isolated RS2, RS3, and RS4) with numerous potential applications as partial or whole substitutes for traditional flour sources. They may increase the nutritional profile of a food product (e.g., by increasing the fiber content and lowering energy values) without significantly compromising its sensory and functional properties. Incorporating RS ingredients into staple food products (such as bread, pasta, and sweet baked goods) may thus offer an array of nutritional benefits to the consumer and a highly accessible functional ingredient to be greater exploited by the food industry.

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Section: Potential Health Benefits Of Rsmentioning

confidence: 99%

Resistant starch—An accessible fiber ingredient acceptable to the Western palate

Walsh

Lucey

Walter

et al. 2022

Comp Rev Food Sci Food Safe

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“…Fruit fiber fermentation in the microbiota of SCFAs also reduces hepatic fatty acid synthesis to help lower LDL-C forma-tion [62,63]. For weight control, numerous studies show that adequate fiber intake reduces body weight, waist circumference, and visceral fat, especially in women, compared to lower fiber diets [64][65][66][67][68][69][70]. The main mechanisms for increased fruit fiber intake and weight control are increases in gastrointestinal bulking volume that promote satiety hormones and reduce macronutrient bioavailability (e.g., reduced metabolizable energy), and promoting healthier microbiota metabolites and microflora that support a more metabolically lean phenotype [2,4,25,68,71,72].…”

Section: Viscous and Prebioticmentioning

confidence: 99%

A Comprehensive Review of Hass Avocado Clinical Trials, Observational Studies, and Biological Mechanisms

Dreher

Cheng²,

Ford³

2021

Nutrients

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This first comprehensive review of fresh Hass avocados includes 19 clinical trials, five observational studies, and biological mechanisms. We identified four primary avocado health effects: (1) reducing cardiovascular disease risk in healthy overweight or obese adults with dyslipidemia by lowering non-HDL-C profiles, triglycerides, LDL oxidation, small atherogenic LDL particles and promoting postprandial vascular endothelial health for better peripheral blood flow; (2) lowering the risk of being overweight or obese, supporting weight loss, and reducing visceral fat tissue in overweight or obese women; (3) improving cognitive function in older normal-weight adults and in young to middle age overweight or obese adults especially in frontal cortex executive function; and (4) stimulating improved colonic microbiota health in overweight or obese adults by promoting healthier microflora and fecal metabolites. We also identified a unique combination of four Hass avocado nutritional features that appear to be primarily responsible for these health effects: (1) a 6 to 1 unsaturated (rich in oleic acid) to saturated fat ratio similar to olive oil; (2) a source of multifunctional prebiotic and viscous fiber; (3) a relatively low energy density of 1.6 kcal/g (79% of edible Hass avocado weight consists of water and fiber with a creamy, smooth texture); and (4) its oleic acid and water emulsion increases carotenoid absorption from low-fat fruits and vegetables (e.g., salsa or salad) when consumed with avocados. They are also a good source of micronutrients and polyphenols, and are very low in sodium and available carbohydrates supporting secondary health and wellness benefits. Hass avocado health effects are best demonstrated when consumed in a healthy dietary plan such as the Mediterranean diet. More extensive and longer clinical trials are needed to further enhance our understanding of the Hass avocado’s health effects.

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“…In addition, flaxseed oil can lower BP due to its dietary fiber, especially soluble fiber, by regulating blood lipids, reducing insulin resistance, and improving the intestinal microbial flora (Anderson et al, 2009; Klosterbuer, Roughead, & Slavin, 2011). Additionally, dietary fiber appears to improve anthropometric indices, and weight loss can play a role in lowering BP (Jovanovski et al, 2021; Kang, 2021).…”

Section: Discussionmentioning

confidence: 99%

The effect of flaxseed oil consumtion on blood pressure among patients with metabolic syndrome and related disorders: A systematic review and meta‐analysis of randomized clinical trials

Mahmudiono

Jasim

Karim

et al. 2022

Phytotherapy Research

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We systematically reviewed randomized clinical trials (RCTs) to elucidate the overall effects of flaxseed oil consumption on blood pressure (BP) in patients with metabolic syndrome and related disorders. PubMed, Scopus, Cochrane Library, and ISI Web of Science databases were systematically searched until March 31, 2020, to find RCTs that examined the effect of flaxseed oil consumption on BP. Weighed mean difference (WMD) was pooled using a random‐effects model. Standard methods were used for the assessment of heterogeneity, sensitivity analysis, and publication bias. Meta‐analysis of five trials (6 arms) showed significant reductions in systolic (WMD: −3.86 mmHg, 95% CI: −7.59 to −0.13, p = .04) BP (SBP) after flaxseed oil consumption. However, the overall effect illustrated no significant change in diastolic (WMD: −1.71 mmHg, 95% CI: −3.67 to 0.26, p = .09) BP (DBP) in the intervention group compared with the control group. Our findings revealed that flaxseed oil consumption has favorable effects on SBP in patients with metabolic syndrome and related disorders. However, further investigations are needed to provide more reliable evidence.

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Effect of viscous fiber supplementation on obesity indicators in individuals consuming calorie-restricted diets: a systematic review and meta-analysis of randomized controlled trials

Cited by 26 publications

References 48 publications

Resistant starch—An accessible fiber ingredient acceptable to the Western palate

Resistant starch—An accessible fiber ingredient acceptable to the Western palate

A Comprehensive Review of Hass Avocado Clinical Trials, Observational Studies, and Biological Mechanisms

The effect of flaxseed oil consumtion on blood pressure among patients with metabolic syndrome and related disorders: A systematic review and meta‐analysis of randomized clinical trials

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