Kombucha can modulate the human microbiota
The first clinical trial with kombucha in humans is now a reality. Published in May 2025 in Brazil, the study analyzes the effects of drinking black tea kombucha for 8 weeks in adults with and without obesity. The results show positive changes in the gut microbiota, with an increase in beneficial bacteria and a reduction in those associated with obesity.
The brain rules: It can change your gut flora in just 2 hours
A study in mice shows that the brain can change the gut microbiota in just 2 to 4 hours. By activating certain neurons in the hypothalamus, the composition of bacteria in the gut rapidly changes. This effect is accompanied by changes in nerve circuits and gut cells.
Rapid modulation of gut microbiota composition by hypothalamic circuits in mice
Get your vagus nerve in shape: your health will thank you for it
A study shows that the gut microbiota communicates with the brain through the vagus nerve. In bacteria-free mice, vagus nerve activity decreased, but returned to normal when microbiota was introduced. It also decreased with antibiotics and recovered when bacteria-rich intestinal fluids were added. Metabolites such as short-chain fatty acids were key to this activation. The study confirms the direct relationship between the gut and the brain.
Gut Microbiome Regulates Brain Signals Through the Vagus Nerve
Quitting soda: the best decision
A global study estimates that in 2020, sugary drinks caused 2.2 million new cases of type 2 diabetes and 1.2 million cases of cardiovascular disease. They account for 9.8% and 3.1% of all new cases, respectively. The impact was greatest among men, young adults, people with higher education, and those in urban areas. The results underscore the urgency of policies to reduce consumption of these beverages.
