What this study can and cannot tell us: the trial suggests that a synbiotic yogurt may improve biomarkers tied to oxidative stress in adults with metabolic syndrome, but that is not the same as showing fewer cases of diabetes, cancer, or other diseases. Biomarkers can be useful signals, yet they are still indirect measures of long-term health outcomes.
Why the comparison matters: the benefit was observed against regular yogurt, which helps isolate the added effect of the prebiotic/postbiotic blend and specific microbes. That makes the result more informative than a simple โyogurt is healthyโ claim, but it also means the finding may depend on the exact formulation used, not yogurt in general.
Practical interpretation: for people trying to improve metabolic health, this kind of food-based intervention may be appealing because it fits more easily into daily eating patterns than a supplement. Still, adherence, overall diet quality, physical activity, sleep, and weight change can all influence oxidative stress, so any effect from one food is likely to be modest within the bigger picture.
What remains uncertain: the study was short, and longer trials are needed to know whether the biomarker changes persist and translate into meaningful health benefits. It is also unclear how well the findings apply across different populations, brands, doses, or probiotic strains. That uncertainty is important when translating early results into everyday nutrition advice.
In a first-of-its-kind study, researchers from the Tehran University of Medical Sciences demonstrated that consuming a cowโs milk yogurt fortified with a mixture of prebiotics and postbiotics โ collectively known as โsynbioticsโ โ significantly improved oxidative stress status in adults with metabolic syndrome.
The finding provides scientific evidence that synbiotic yogurt can be used to mitigate the effects of oxidative stress, a condition that leads to cell and tissue breakdown and can cause chronic and degenerative diseases such as cancer, Alzheimerโs and heart disease.
Oxidative stress, a process linked to ageing and triggered when antioxidant levels in the body are low, is closely associated with metabolic syndrome, a risk factor for type-2 diabetes. Existing research has found that modifying the gut microbiota can lessen the effects of metabolic syndrome. For example, probiotics can improve certain metabolic parameters, reduce oxidative stress and inflammation, and act as antioxidants.
But research on how probiotic-fortified foods affect oxidative stress in adults living with metabolic syndrome has been lacking.
In a 12-week randomized clinical trial, the researchers examined how oxidative stress biomarkers were affected when adults with metabolic syndrome consumed synbiotic yogurt fortified with Lactobacillus plantarum, Lactobacillus pentosus, and Chloromyces marcosianos yeast, versus a control group that consumed regular yogurt.
After 12 weeks of daily consumption, the synbiotic yogurt group had significantly improved their antioxidant levels along with other biomarkers indicating improvements in oxidative stress status.
โThese results support the potential of this new developed synbiotic yogurt as a dietary intervention for individuals with MetS, offering a novel approach to ameliorating oxidative stress and potentially reducing the risk of associated complications,” the authors noted.
“Further research is warranted to explore the long-term effects of synbiotic yogurt consumption and its impact on various metabolic parameters in individuals with MetS.
Consumption of a new developed synbiotic yogurt improves oxidative stress status in adults with metabolic syndrome: a randomized controlled clinical trial
Authors: Zolghadrpour, MA., Jowshan, MR., Seyedmahalleh, M.H. et al.
Published: Scientific Reports 14, 20333 (2024)
DOI: 10.1038/s41598-024-71264-y
https://www.dairyreporter.com/Article/2024/09/03/synbiotic-yogurt-consumption-reduces-oxidative-stress-in-adults-with-metabolic-syndrome
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