Asparagus polysaccharides: gut bacteria, immunity and lab findings
What it found
Asparagus polysaccharides have been tested for effects on gut bacteria, inflammation, immune cells and cancer cells, mostly in mice and lab dishes.
The review says regulating gut bacteria is their most important health benefit.
What they found
Animal and lab studies
Gut bacteria changes
In mice with non-alcoholic liver disease, asparagus polysaccharides increased Desulfovibrio, Lachnospiraceae and Rikenella, and reduced Faecalibaculum and Proteus. The authors say this change in gut bacteria, rather than an increase in species richness, is how the polysaccharides help.
Liver and blood lipids
In mice fed a high-fat diet, asparagus polysaccharides lowered blood and liver lipids and improved liver injury and inflammation. In another mouse study, high-dose treatment reduced total cholesterol by 10.5%, triglycerides by 22.7% and LDL cholesterol by 30.8%.
Atherosclerosis in mice
In mice prone to atherosclerosis fed a high-fat diet, asparagus polysaccharides at 150 mg/kg/day for 12 weeks reduced aortic plaques and lowered total cholesterol, triglycerides and inflammatory markers. The authors suggest the effect may be linked to tryptophan metabolism by gut bacteria.
Brain inflammation in cells
In BV2 cells stimulated with endotoxin, asparagus polysaccharides reduced inflammatory cytokines including COX2, iNOS, TNF-alpha, IL-6 and IL-1beta. At 2.2 micromolar, the reduction in NO was similar to the effect of 5 micromolar MINO.
Cancer cells and immune cells
In lab tests, asparagus polysaccharides inhibited liver cancer cell growth, migration and invasion, and reduced myeloid-derived suppressor cells in a dose-dependent way. In mice with colon tumors, they also increased lymphocyte activity.
Immune regulation
In RAW264.7 macrophages, asparagus polysaccharides increased the release of immune factors IL-6, TNF-alpha and IL-10. In mice with cyclophosphamide-suppressed immunity, fermented polysaccharides raised IgA and IgG levels.
What the authors conclude
- They say that regulating gut bacteria is the most important health benefit of asparagus polysaccharides.
- They call for more research on the structure-activity relationships and on how extraction methods affect the chemical structures.
- They suggest that future work should focus on deepening structure-activity studies and promoting clinical translation.
How it was done
The authors wanted to bring together what is known about asparagus polysaccharides, including how they are extracted, their chemical structures and their health and industry uses, to help future research and development.
They reviewed studies published from 2000 to 2026 on asparagus polysaccharides, covering extraction and purification methods, chemical structures, health effects in mice and lab cells, and food and biomedical applications.
What it can’t tell you
- Most of the health findings come from mice or lab cells, so they cannot show what happens in people.
- The review did not carry out a meta-analysis, so it cannot give a single combined estimate of effects.
- The authors note that structure-activity conclusions are mostly based on experience with other plant polysaccharides, not direct proof.
Who paid
- Conflicts
- The author(s) declared that this work was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
- Authors work at
- Heilongjiang University of Chinese Medicine, China
The paper
- Title
- Polysaccharides from Asparagus officinalis L.: phytochemistry, health benefits, biomedical, and food industry applications
- Type
- ReviewThe authors read earlier studies and describe what they found. It isn’t a new study.
- Evidence
- Animals and lab studies
- Summarised from
- Full text
- Licence
- CC BY. Words in quotation marks are the authors’; the rest is our summary.
- Cite
- Wu L, Bi H, Zhang M, Xu X, Wang M (2026). Polysaccharides from Asparagus officinalis L.: phytochemistry, health benefits, biomedical, and food industry applications. Frontiers in pharmacology. doi:10.3389/fphar.2026.1842554Free full textPubMed 42318347DOI
Summary written 30 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error