This article contains findings obtained from research on animals:
- The results from animal research studies should not be directly applied to humans and the results may not generalise to the human population.
- There may be significant differences between species in terms of physiology, physiology, and pharmacology, as well as differences in the way diseases and treatments are modelled in animals.
- Any conclusions drawn from animal research should be considered with caution and in the context of other types of research studies such as observational studies, clinical trials, and reviews of the literature.
Insights & Discussion
Traditional fermented products made from soybeans and rice, commonly consumed in the Japanese diet, show significant potential in preventing the progression of fatty liver disease.
In the study, C57BL/6J mice were first acclimated for two weeks. Following this period, they were segregated into groups and fed on different diets for a duration of 20 weeks. These diets included a Normal Diet (ND), a High-Fat Diet (HFD), an HFD containing 5% of the fermented soybean and rice product (denoted as HFD+M), and an HFD with 5% of a pre-fermented form of the product (HFD+PFM). The focus was on assessing the impact of these diets on the development of fatty liver disease in the subjects.
The mice consuming solely the high-fat diet developed the symptoms of a typical fatty liver, as anticipated. However, the mice fed with diets that included either the fermented soybean and rice product or its pre-fermented variety showed a substantial reduction in the progression of the fatty liver disease, notably in the female subjects. This was observed in terms of diminished liver weight. Moreover, a decrease was noted in the levels of leptin and resistin, hormones linked with obesity and insulin resistance, in the serum of these groups. The male subjects also showed resistance against fatty liver disease progression upon the consumption of these diets. This study therefore demonstrates the value of including such traditional fermented food products in the diet as possible deterrents against lifestyle-induced ailments like metabolic syndrome.
Discover Related Insights
Soy food intake, particularly fermented soy products, appear to have a protective effect on fracture risk among Asian women, especially in early menopause.
2021 Complementary Medicine Research Soy Foods and the Risk of Fracture: A Systematic Review of Prospective Cohort Studies Akhavan Zanjani M, Rahmani S, Mehranfar S, Zarrin M, Bazyar H, Moradi Poodeh B, et al.
Systematic Review Fracture Risk Soybean
The research team carried out a systematic review of prospective cohort studies investigating the link between soy food intake and fracture risk. The databases searched were PubMed, Scopus, and Embase up to June 2021, and the team narrowed down 695 records to include 5 high-quality cohort studies. These selected studies were mostly conducted in China, Singapore and Japan and varied in their focus on different types of fractures. The dietary intake of soy food was assessed across all studies through face-to-face interviews.
In the analysis of the results, a promising relationship was found between the consumption of soy foods and a reduced risk of fractures among Asian women, notably for those in the early stages of menopause or those who consumed fermented soy products. In contrast, the association was not significant among men.
Phytoestrogens, used in various forms, have shown improvement in urogenital menopause symptoms and improved women's sexual function, promoting overall quality of life.
2021 European Journal of Obstetrics & Gynecology and Reproductive Biology Impact of phytoestrogens on treatment of urogenital menopause symptoms: A systematic review of randomized clinical trials Abdi F, Rahnemaei FA, Roozbeh N, Pakzad R
Systematic Review Flaxseed Menopause Soybean
A thorough and systematic review was conducted on databases including PubMed, EMBASE, Web of Science, Cochrane library, Scopus and ProQuest, spanning from the years 2000-2020. The focus was solely on randomized clinical trials. An evaluation of the quality of selected papers was carried out using the CONSORT checklist. In total, 33 high-quality papers were reviewed which discussed the different forms and uses of phytoestrogens.
The results of this systematic review reveal that phytoestrogens including Pueraria Mirifica, fennel, Hop plant, Glycine Max, soy, red clover, black cohosh, ginsing, cimicifugaracemosa, genistein, diadzein, glycitein and isoflavone, used as various products such as oral capsules, pills, food supplements, enriched powders, vaginal gels, creams and suppositories, improved menopausal urogenital symptoms. Particularly, the recovery rate was found to be higher when these were applied vaginally. Further implication of these findings is the enhancement of women's sexual function following treatment, validating the use of phytoestrogens as a safe, low-risk and accessible method to alleviate urogenital symptoms.
Fermented soybean products alleviate and possibly prevent neurodegenerative conditions, including Parkinson's and Alzheimer's diseases.
2021 Foods Fermented Soy Products: Beneficial Potential in Neurodegenerative Diseases Jang CH, Oh J, Lim JS, Kim HJ, Kim JS
Review Article Alzheimer's Disease Neurodegenerative Diseases Parkinson's Disease
The study involved the fermentation of cooked soybeans with specified bacteria and fungi species, a process known to produce a range of bioactive compounds. These unique compounds, which are most often beneficial to health, are contained in fermented soybean products that are a staple in East Asian diets.
In analyzing the results, the focus was on the potential of these fermented soy foods and their components in managing neurodegenerative diseases. Notably, the findings suggested a significant preventive and curative effect of these products on such ailments as Alzheimer's and Parkinson's diseases. The paper, therefore, presents fermented soy foods as potentially reliable natural solutions to these neurodegenerative conditions.