Mode
Text Size
Log in / Sign up

Plant bioactive polysaccharides show metabolic benefits in umbrella review of systematic reviewsPlant polysaccharides show potential benefits for blood sugar, cholesterol, and gut health

AI-generated summary of the cited source, checked by automated accuracy review. How we work

Key Takeaway
Consider plant polysaccharides for metabolic benefits but recognize evidence lacks effect sizes and safety data.

This umbrella review synthesized evidence from systematic reviews and meta-analyses examining plant bioactive polysaccharides consumption for metabolic diseases and metabolism-related indicators. The review assessed methodological quality using AMSTAR 2 and evidence quality using GRADE, though specific population characteristics, sample sizes, and study settings were not reported.

For outcomes, the review found significant positive effects on blood lipids and blood glucose, with demonstrated benefits for gastrointestinal function and obesity/body weight control. However, no significant effects were observed for blood pressure control or liver function enhancement. No specific effect sizes, absolute numbers, p-values, or confidence intervals were reported for any outcomes.

Safety and tolerability data were not reported in the available evidence. The authors note the evidence suggests promise as a preventive and therapeutic strategy for hyperlipidemia, hyperglycemia, and cardiovascular and gastrointestinal diseases, but this is based on associations from synthesized randomized controlled trials rather than direct causal evidence. Key limitations of the underlying evidence were not specified in the review.

Researchers looked at many previous studies to understand how plant bioactive polysaccharides might affect health. These are natural compounds found in plants. The review combined results from systematic reviews and meta-analyses, which are studies that summarize findings from multiple clinical trials. The goal was to see if these plant compounds could help with various metabolism-related health indicators.

The analysis found that consuming these plant polysaccharides was associated with positive effects on blood sugar levels and blood lipids like cholesterol. Benefits were also seen for gastrointestinal function and body weight control. However, the review did not find significant effects on blood pressure or measures of liver function. The researchers used standard methods to assess the quality of the evidence they reviewed.

It's important to understand that this is an umbrella review, which means it summarizes what other reviews have found. The original report does not provide specific numbers on how strong these effects were, who exactly was studied, or any safety information. While the findings suggest these plant compounds could be a promising part of a strategy for managing conditions like high cholesterol and high blood sugar, more detailed research is needed. Readers should view this as an early look at a broad area of study, not as specific health advice.

What this means for you:
Early review links plant polysaccharides to some metabolic benefits, but details on effects and safety are lacking.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedApr 2026
View Original Abstract ↓
BACKGROUND: With the increasing prevalence of metabolic diseases, phytochemicals have shown great potential in the intervention of metabolic disorders. A number of studies have demonstrated that plant bioactive polysaccharides have significant effects in regulating metabolism. There is currently no comprehensive assessment of the evidence quality of studies of metabolism-related indicators. OBJECTIVES: This study aimed to demonstrate more credible associations between plant bioactive polysaccharides and various metabolism-related indicators by synthesizing evidence from systematic reviews and meta-analyses. METHODS: We searched 5 databases for systematic reviews and meta-analyses of randomized controlled trials investigating the regulation of metabolic indicators by plant polysaccharides, with a total of 33 articles included, covering 111 metabolism-related indicators. Forest plots were used to summarize the indicators with significant and nonsignificant effects, and the methodological quality of the included articles and the quality of evidence were assessed based on the Assessment of Multiple Systematic Reviews version 2 and the Grading of Recommendations, Assessment, Development, and Evaluation. RESULTS: The study covered 6 metabolism-related outcomes, including blood lipids (51%), blood glucose (22%), gastrointestinal function (8%), obesity (12%), and blood pressure and liver function-related outcomes (7%). The results indicated that plant polysaccharide consumption exerted a relatively significant effect on regulating blood lipids and blood glucose-related indicators and also demonstrated benefits in body weight control and gastrointestinal function improvement. However, it showed no significant effect on blood pressure control or liver function enhancement. CONCLUSIONS: The ability of plant polysaccharides to regulate carbohydrate and lipid metabolism suggests they hold promise as a preventive and therapeutic strategy for hyperlipidemia, hyperglycemia, and cardiovascular and gastrointestinal diseases. This trial was registered at PROSPERO as CRD42024528490 (https://www.crd.york.ac.uk/PROSPERO/myprospero).
Free Newsletter

Clinical research that matters. Delivered to your inbox.

Join thousands of clinicians and researchers. No spam, unsubscribe anytime.