Dr. Toribio-Mateas emphasizes the potential link between kefir consumption and improved gut health, which may positively impact neurological conditions such as ADHD. Kefir is a rich source of probiotics, beneficial bacteria that contribute to digestive well-being. The study conducted by Dr. Mateas and his team involved administering kefir daily to young adults and children with ADHD for six weeks, along with recommendations to avoid ultra-processed foods and prioritize whole-food items like lamb, chicken, potatoes, rice, bananas, and apples. The research delved into the potential role of compromised gut microbiomes in facilitating the entry of harmful bacteria, viruses, and fungi into the bloodstream, with the potential to subsequently affect brain function and behavior. The study suggests that kefir consumption may enhance the composition of gut microbiota in children with ADHD, potentially leading to a reduction in ADHD symptoms and improvements in sleep. While further research is warranted to fully understand the effects of kefir on ADHD, the findings of this study provide promising insights into the potential benefits of this fermented milk beverage.