Fat loss: Probiotics in kombucha could mimic effects of fasting

Evan Walker
Evan Walker TheMediTary.Com |
Three see-through glass bottles getting filled up with kombucha tea as part of the preparation for the fermentation processShare on Pinterest
Research has linked probiotics in kombucha to reduced fat accumulation in the body. alvarez/Getty Images
  • High triglyceride levels in the body are associated with an increased risk for cardiovascular disease.
  • Healthy lifestyle changes like exercising regularly, losing weight, limiting alcohol use, and eating a healthy diet can help lower triglyceride levels.
  • Researchers from The University of North Carolina at Chapel Hill say that drinking kombucha tea may also help reduce fat accumulation and lower triglyceride levels via a worm model.

When a person has too much fat stored within their body, particularly triglycerides, it can increase their risk for several health conditions, including cardiovascular diseases such as atherosclerosis, stroke, and heart failure.

High triglyceride levels in the body are also linked to a heightened risk for acute inflammation in the Health">pancreas, which may increase the risk of Health">atherosclerotic cardiovascular disease.

Previous research shows that making healthy lifestyle changes like exercising regularly, losing weight, limiting alcohol use, and eating a healthy diet that is high in fiber and healthy fats and low in refined sugars and carbohydrates can help lower triglyceride levels.

Now, researchers from The University of North Carolina at Chapel Hill say that drinking kombucha tea may also help reduce fat accumulation and lower triglyceride levels via a worm model.

The study was recently published in the journal PLOS Genetics.

Researchers based their study on a worm model.

“Our favorite animal model system to use in the lab is the nematode Caenorhabditis elegans, which consumes bacteria as (its) primary food source,” Dowen said. “This allows us to directly study the relationship between the host and the probiotic microbes found in kombucha tea in a genetically tractable model system.”

Through the worm model, scientists found that after ingesting kombucha tea, microbes from the tea colonized the worms’ intestines, creating metabolic changes similar to those that occur during fasting.

“We were very surprised to find that the probiotic microbes in kombucha tea could colonize the worm gut and stimulate a fasting-like metabolic response in the host, which occurred despite the fact that these animals showed no defects in intestinal nutrient absorption,” Dowen explained.

“Incredibly, this response was only seen in animals consuming microbes isolated from a long-term, fully fermented kombucha tea culture and not a simple mix of non-fermenting kombucha-associated microbes. This observation suggested that microbial metabolites produced during the fermentation process could be shaping host metabolic pathways,” he added.

Dowen and his team also discovered via the worm model that animals ingesting a diet including probiotic microbes found in kombucha tea experienced a reduction in fat accumulation and a lowering of triglyceride levels.

“These findings are significant as they are consistent with purported human Health benefits of kombucha tea, which include protection against metabolic diseases, improved liver function, and reduced fat accumulation.”
— Rob Dowen, PhD

“Much of this evidence is anecdotal or is not supported by detailed mechanistic studies. Thus, our findings are very exciting as they corroborate the human health benefits of kombucha tea and provide mechanistic insight into how host metabolism may be altered by kombucha-associated probiotic microbes,” Dowen continued.

“It is important to point out that our study was performed in a model organism in the lab, and thus, our results will need to be substantiated and expanded upon in mammalian model systems to further inform how kombucha consumption impacts human physiology,” he noted.

MNT also spoke with Monique Richard, a registered dietitian nutritionist and owner of Nutrition-In-Sight, about this study.

Richard said that currently there is a lack of sufficient evidence for significant clinical benefits of kombucha.

“(This) is not to say there are no health benefits from consuming kombucha such as from the tea — black or green — itself which provides polyphenols and additional ingredients such as B vitamins, but I would also urge consumers to take into consideration one, the amount of sugar that is in the kombucha (and) two, the amount of caffeine,” she explained.

“It is important to note kombucha can interact with diabetes medication, although worth noting, from studies on animal models, and can have hypo (low) glycemic, or low blood glucose effects, depending on the ingredients, person, and medication interaction. It can also interact with antabuse medication,” Richard added.

Before downing bottles of kombucha or practicing harnessing SCOBY in your own kitchen, Richard advised to meet with a registered dietitian nutritionist (RDN) to figure out the root cause of what may be contributing to elevated fat accumulation or high triglycerides.

“Hint — it likely could be a combination of diet, lifestyle, and genetics, in addition to other factors that should be addressed,” she added.

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